Merge remote-tracking branch 'origin/master' into #1206-no-friendly-name

# Conflicts: # src/pages/EditMonitor.vue
2025-03-04 08:25:57 +00:00 · 2023-01-20 20:22:36 +08:00 · 2023-01-20 20:22:36 +08:00 · 26153c7913
commit 26153c7913
parent bc186d3a29 6ccf741bc4
234 changed files with 24139 additions and 12611 deletions
--- a/.dockerignore
+++ b/.dockerignore
@ -1,6 +1,7 @@
 /.idea
 /node_modules
 /data
+/cypress
 /out
 /test
 /kubernetes
@ -30,6 +31,9 @@ tsconfig.json
 /tmp
 /babel.config.js
 /ecosystem.config.js
+/extra/healthcheck.exe
+/extra/healthcheck
+

 ### .gitignore content (commented rules are duplicated)

--- a/.editorconfig
+++ b/.editorconfig
@ -19,3 +19,6 @@ indent_size = 2

 [*.vue]
 trim_trailing_whitespace = false
+
+[*.go]
+indent_style = tab
--- a/.github/PULL_REQUEST_TEMPLATE.md
+++ b/.github/PULL_REQUEST_TEMPLATE.md
@ -1,4 +1,8 @@
-👉 Delete this line if you have read and agree our pull request rules and guidelines: https://github.com/louislam/uptime-kuma/blob/master/CONTRIBUTING.md#can-i-create-a-pull-request-for-uptime-kuma
+⚠️⚠️⚠️ Since we do not accept all types of pull requests and do not want to waste your time. Please be sure that you have read pull request rules:
+https://github.com/louislam/uptime-kuma/blob/master/CONTRIBUTING.md#can-i-create-a-pull-request-for-uptime-kuma
+
+Tick the checkbox if you understand [x]: 
+- [ ] I have read and understand the pull request rules.

 # Description

--- a/.github/workflows/auto-test.yml
+++ b/.github/workflows/auto-test.yml
@ -18,7 +18,7 @@ jobs:
    strategy:
      matrix:
        os: [macos-latest, ubuntu-latest, windows-latest]
-        node: [ 14, 16, 17, 18 ]
+        node: [ 14, 16, 18, 19 ]
        # See supported Node.js release schedule at https://nodejs.org/en/about/releases/

    steps:
@ -50,3 +50,35 @@ jobs:
        cache: 'npm'
    - run: npm install
    - run: npm run lint
+
+  e2e-tests:
+    needs: [ check-linters ]
+    runs-on: ubuntu-latest
+    steps:
+    - run: git config --global core.autocrlf false  # Mainly for Windows
+    - uses: actions/checkout@v3
+
+    - name: Use Node.js 14
+      uses: actions/setup-node@v3
+      with:
+        node-version: 14
+        cache: 'npm'
+    - run: npm install
+    - run: npm run build
+    - run: npm run cy:test
+
+  frontend-unit-tests:
+    needs: [ check-linters ]
+    runs-on: ubuntu-latest
+    steps:
+    - run: git config --global core.autocrlf false  # Mainly for Windows
+    - uses: actions/checkout@v3
+
+    - name: Use Node.js 14
+      uses: actions/setup-node@v3
+      with:
+        node-version: 14
+        cache: 'npm'
+    - run: npm install
+    - run: npm run build
+    - run: npm run cy:run:unit
--- a/.github/workflows/stale-bot.yml
+++ b/.github/workflows/stale-bot.yml
@ -0,0 +1,22 @@
+name: 'Automatically close stale issues and PRs'
+on:
+  workflow_dispatch:
+  schedule:
+    - cron: '0 */6 * * *'
+#Run every 6 hours 
+
+jobs:
+  stale:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/stale@v5
+        with:
+          stale-issue-message: 'We are clearing up our old issues and your ticket has been open for 3 months with no activity. Remove stale label or comment or this will be closed in 2 days.'
+          close-issue-message: 'This issue was closed because it has been stalled for 2 days with no activity.'
+          days-before-stale: 90
+          days-before-close: 2
+          days-before-pr-stale: 999999999
+          days-before-pr-close: 1
+          exempt-issue-labels: 'News,Medium,High,discussion,bug,doc,feature-request'
+          exempt-issue-assignees: 'louislam'
+          operations-per-run: 200
--- a/.gitignore
+++ b/.gitignore
@ -13,3 +13,10 @@ dist-ssr
 /out
 /tmp
 .env
+
+cypress/videos
+cypress/screenshots
+
+/extra/healthcheck.exe
+/extra/healthcheck
+/extra/healthcheck-armv7
--- a/.stylelintrc
+++ b/.stylelintrc
@ -8,6 +8,7 @@
        "declaration-empty-line-before": null,
        "alpha-value-notation": "number",
        "color-function-notation": "legacy",
-        "shorthand-property-no-redundant-values": null
+        "shorthand-property-no-redundant-values": null,
+        "color-hex-length": null,
    }
 }
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@ -1,6 +1,6 @@
 # Project Info

-First of all, thank you everyone who made pull requests for Uptime Kuma, I never thought GitHub Community can be that nice! And also because of this, I also never thought other people actually read my code and edit my code. It is not structured and commented so well, lol. Sorry about that.
+First of all, I want to thank everyone who made pull requests for Uptime Kuma. I never thought the GitHub Community would be so nice! Because of this, I also never thought that other people would actually read and edit my code. It is not very well structured or commented, sorry about that.

 The project was created with vite.js (vue3). Then I created a subdirectory called "server" for server part. Both frontend and backend share the same package.json.

@ -27,13 +27,11 @@ The frontend code build into "dist" directory. The server (express.js) exposes t

 ## Can I create a pull request for Uptime Kuma?

-Yes, you can. However, since I don't want to waste your time, be sure to **create empty draft pull request, so we can discuss first** if it is a large pull request or you don't know it will be merged or not.
+Yes or no, it depends on what you will try to do. Since I don't want to waste your time, be sure to **create an empty draft pull request or open an issue, so we can have a discussion first**. Especially for a large pull request or you don't know it will be merged or not.

-Also, please don't rush or ask for ETA, because I have to understand the pull request, make sure it is no breaking changes and stick to my vision of this project, especially for large pull requests.
+Here are some references:

-I will mark your pull request in the [milestones](https://github.com/louislam/uptime-kuma/milestones), if I am plan to review and merge it.
-
-✅ Accept:
+✅ Usually Accept:
 - Bug/Security fix
 - Translations
 - Adding notification providers
@ -47,8 +45,19 @@ I will mark your pull request in the [milestones](https://github.com/louislam/up
 - Any breaking changes
 - Duplicated pull request
 - Buggy
+- UI/UX is not close to Uptime Kuma 
 - Existing logic is completely modified or deleted for no reason
 - A function that is completely out of scope
+- Convert existing code into other programming languages
+- Unnecessary large code changes (Hard to review, causes code conflicts to other pull requests)
+
+The above cases cannot cover all situations.
+
+I (@louislam) have the final say. If your pull request does not meet my expectations, I will reject it, no matter how much time you spend on it. Therefore, it is essential to have a discussion beforehand.
+
+I will mark your pull request in the [milestones](https://github.com/louislam/uptime-kuma/milestones), if I am plan to review and merge it.
+
+Also, please don't rush or ask for ETA, because I have to understand the pull request, make sure it is no breaking changes and stick to my vision of this project, especially for large pull requests.


 ### Recommended Pull Request Guideline
@ -68,9 +77,9 @@ Before deep into coding, discussion first is preferred. Creating an empty pull r

 ## Project Styles

-I personally do not like something need to learn so much and need to config so much before you can finally start the app.
+I personally do not like it when something requires so much learning and configuration before you can finally start the app.

- Easy to install for non-Docker users, no native build dependency is needed (at least for x86_64), no extra config, no extra effort to get it run
+- Easy to install for non-Docker users, no native build dependency is needed (at least for x86_64), no extra config, no extra effort required to get it running
 - Single container for Docker users, no very complex docker-compose file. Just map the volume and expose the port, then good to go
 - Settings should be configurable in the frontend. Environment variable is not encouraged, unless it is related to startup such as `DATA_DIR`.
 - Easy to use
@ -86,8 +95,8 @@ I personally do not like something need to learn so much and need to config so m
 ## Name convention

 - Javascript/Typescript: camelCaseType
- SQLite: underscore_type
- CSS/SCSS: dash-type
+- SQLite: snake_case (Underscore)
+- CSS/SCSS: kebab-case (Dash)

 ## Tools

@ -168,16 +177,23 @@ The data and socket logic are in `src/mixins/socket.js`.

 ## Unit Test

-It is an end-to-end testing. It is using Jest and Puppeteer.
-
 ```bash
 npm run build
 npm test
 ```

-By default, the Chromium window will be shown up during the test. Specifying `HEADLESS_TEST=1` for terminal environments.
+## Dependencies

-## Update Dependencies
+Both frontend and backend share the same package.json. However, the frontend dependencies are eventually not used in the production environment, because it is usually also baked into dist files. So:
+
+- Frontend dependencies = "devDependencies"
+  - Examples: vue, chart.js
+- Backend dependencies = "dependencies"
+  - Examples: socket.io, sqlite3
+- Development dependencies = "devDependencies"
+  - Examples: eslint, sass
+
+### Update Dependencies

 Install `ncu`
 https://github.com/raineorshine/npm-check-updates
--- a/README.md
+++ b/README.md
@ -7,33 +7,32 @@
    <img src="./public/icon.svg" width="128" alt="" />
 </div>

-It is a self-hosted monitoring tool like "Uptime Robot".
+Uptime Kuma is an easy-to-use self-hosted monitoring tool.

-<img src="https://uptime.kuma.pet/img/dark.jpg" width="700" alt="" />
+<img src="https://user-images.githubusercontent.com/1336778/212262296-e6205815-ad62-488c-83ec-a5b0d0689f7c.jpg" width="700" alt="" />

 ## 🥔 Live Demo

 Try it!

-https://demo.uptime.kuma.pet
+- Tokyo Demo Server: https://demo.uptime.kuma.pet (Sponsored by [Uptime Kuma Sponsors](https://github.com/louislam/uptime-kuma#%EF%B8%8F-sponsors))
+- Europe Demo Server: https://demo.uptime-kuma.karimi.dev:27000 (Provided by [@mhkarimi1383](https://github.com/mhkarimi1383))

-It is a temporary live demo, all data will be deleted after 10 minutes. The server is located in Tokyo, so if you live far from there, it may affect your experience. I suggest that you should install and try it out for the best demo experience.
-
-VPS is sponsored by Uptime Kuma sponsors on [Open Collective](https://opencollective.com/uptime-kuma)! Thank you so much!
+It is a temporary live demo, all data will be deleted after 10 minutes. Use the one that is closer to you, but I suggest that you should install and try it out for the best demo experience.

 ## ⭐ Features

-* Monitoring uptime for HTTP(s) / TCP / HTTP(s) Keyword / Ping / DNS Record / Push / Steam Game Server.
-* Fancy, Reactive, Fast UI/UX.
-* Notifications via Telegram, Discord, Gotify, Slack, Pushover, Email (SMTP), and [90+ notification services, click here for the full list](https://github.com/louislam/uptime-kuma/tree/master/src/components/notifications).
-* 20 second intervals.
+* Monitoring uptime for HTTP(s) / TCP / HTTP(s) Keyword / Ping / DNS Record / Push / Steam Game Server / Docker Containers
+* Fancy, Reactive, Fast UI/UX
+* Notifications via Telegram, Discord, Gotify, Slack, Pushover, Email (SMTP), and [90+ notification services, click here for the full list](https://github.com/louislam/uptime-kuma/tree/master/src/components/notifications)
+* 20 second intervals
 * [Multi Languages](https://github.com/louislam/uptime-kuma/tree/master/src/languages)
-* Multiple Status Pages
-* Map Status Page to Domain
-* Ping Chart
-* Certificate Info
-* Proxy Support
-* 2FA available
+* Multiple status pages
+* Map status pages to specific domains
+* Ping chart
+* Certificate info
+* Proxy support
+* 2FA support

 ## 🔧 How to Install

@ -45,14 +44,14 @@ docker run -d --restart=always -p 3001:3001 -v uptime-kuma:/app/data --name upti

 ⚠️ Please use a **local volume** only. Other types such as NFS are not supported.

-Browse to http://localhost:3001 after starting.
+Uptime Kuma is now running on http://localhost:3001

 ### 💪🏻 Non-Docker

 Required Tools: 
 - [Node.js](https://nodejs.org/en/download/) >= 14
 - [Git](https://git-scm.com/downloads) 
- [pm2](https://pm2.keymetrics.io/) - For run in background
+- [pm2](https://pm2.keymetrics.io/) - For running Uptime Kuma in the background

 ```bash
 # Update your npm to the latest version
@ -74,7 +73,7 @@ pm2 start server/server.js --name uptime-kuma


 ```
-Browse to http://localhost:3001 after starting.
+Uptime Kuma is now running on http://localhost:3001

 More useful PM2 Commands

@ -106,7 +105,7 @@ https://github.com/louislam/uptime-kuma/milestones

 Project Plan:

-https://github.com/louislam/uptime-kuma/projects/1
+https://github.com/users/louislam/projects/4/views/1

 ## ❤️ Sponsors

@ -151,13 +150,20 @@ You can discuss or ask for help in [issues](https://github.com/louislam/uptime-k

 ### Subreddit

-My Reddit account: louislamlam
+My Reddit account: [u/louislamlam](https://reddit.com/u/louislamlam).  
 You can mention me if you ask a question on Reddit.
-https://www.reddit.com/r/UptimeKuma/
+[r/Uptime kuma](https://www.reddit.com/r/UptimeKuma/)

 ## Contribute

-### Beta Version
+### Test Pull Requests
+
+There are a lot of pull requests right now, but I don't have time to test them all.
+
+If you want to help, you can check this:
+https://github.com/louislam/uptime-kuma/wiki/Test-Pull-Requests
+
+### Test Beta Version

 Check out the latest beta release here: https://github.com/louislam/uptime-kuma/releases

@ -169,5 +175,5 @@ If you want to translate Uptime Kuma into your language, please read: https://gi

 Feel free to correct my grammar in this README, source code, or wiki, as my mother language is not English and my grammar is not that great.

-### Pull Requests
-If you want to modify Uptime Kuma, this guideline may be useful for you: https://github.com/louislam/uptime-kuma/blob/master/CONTRIBUTING.md
+### Create Pull Requests
+If you want to modify Uptime Kuma, please read this guide and follow the rules here: https://github.com/louislam/uptime-kuma/blob/master/CONTRIBUTING.md
--- a/SECURITY.md
+++ b/SECURITY.md
@ -2,9 +2,9 @@

 ## Reporting a Vulnerability

-Please report security issues to uptime@kuma.pet.
+Please report security issues to https://github.com/louislam/uptime-kuma/security/advisories/new.

-Do not use the issue tracker or discuss it in the public as it will cause more damage.
+Do not use the public issue tracker or discuss it in the public as it will cause more damage.

 ## Supported Versions

--- a/config/cypress.config.js
+++ b/config/cypress.config.js
@ -0,0 +1,28 @@
+const { defineConfig } = require("cypress");
+
+module.exports = defineConfig({
+    projectId: "vyjuem",
+    e2e: {
+        experimentalStudio: true,
+        setupNodeEvents(on, config) {
+
+        },
+        fixturesFolder: "test/cypress/fixtures",
+        screenshotsFolder: "test/cypress/screenshots",
+        videosFolder: "test/cypress/videos",
+        downloadsFolder: "test/cypress/downloads",
+        supportFile: "test/cypress/support/e2e.js",
+        baseUrl: "http://localhost:3002",
+        defaultCommandTimeout: 10000,
+        pageLoadTimeout: 60000,
+        viewportWidth: 1920,
+        viewportHeight: 1080,
+        specPattern: [
+            "test/cypress/e2e/setup.cy.js",
+            "test/cypress/e2e/**/*.js"
+        ],
+    },
+    env: {
+        baseUrl: "http://localhost:3002",
+    },
+});
--- a/config/cypress.frontend.config.js
+++ b/config/cypress.frontend.config.js
@ -0,0 +1,10 @@
+const { defineConfig } = require("cypress");
+
+module.exports = defineConfig({
+    e2e: {
+        supportFile: false,
+        specPattern: [
+            "test/cypress/unit/**/*.js"
+        ],
+    }
+});
--- a/config/jest-debug-env.js
+++ b/config/jest-debug-env.js
@ -1,33 +0,0 @@
-const PuppeteerEnvironment = require("jest-environment-puppeteer");
-const util = require("util");
-
-class DebugEnv extends PuppeteerEnvironment {
-    async handleTestEvent(event, state) {
-        const ignoredEvents = [
-            "setup",
-            "add_hook",
-            "start_describe_definition",
-            "add_test",
-            "finish_describe_definition",
-            "run_start",
-            "run_describe_start",
-            "test_start",
-            "hook_start",
-            "hook_success",
-            "test_fn_start",
-            "test_fn_success",
-            "test_done",
-            "run_describe_finish",
-            "run_finish",
-            "teardown",
-            "test_fn_failure",
-        ];
-        if (!ignoredEvents.includes(event.name)) {
-            console.log(
-                new Date().toString() + ` Unhandled event [${event.name}] ` + util.inspect(event)
-            );
-        }
-    }
-}
-
-module.exports = DebugEnv;
--- a/config/jest-frontend.config.js
+++ b/config/jest-frontend.config.js
@ -1,5 +0,0 @@
-module.exports = {
-    "rootDir": "..",
-    "testRegex": "./test/frontend.spec.js",
-};
-
--- a/config/jest-puppeteer.config.js
+++ b/config/jest-puppeteer.config.js
@ -1,20 +0,0 @@
-module.exports = {
-    "launch": {
-        "dumpio": true,
-        "slowMo": 500,
-        "headless": process.env.HEADLESS_TEST || false,
-        "userDataDir": "./data/test-chrome-profile",
-        args: [
-            "--disable-setuid-sandbox",
-            "--disable-gpu",
-            "--disable-dev-shm-usage",
-            "--no-default-browser-check",
-            "--no-experiments",
-            "--no-first-run",
-            "--no-pings",
-            "--no-sandbox",
-            "--no-zygote",
-            "--single-process",
-        ],
-    }
-};
--- a/config/jest.config.js
+++ b/config/jest.config.js
@ -1,12 +0,0 @@
-module.exports = {
-    "verbose": true,
-    "preset": "jest-puppeteer",
-    "globals": {
-        "__DEV__": true
-    },
-    "testRegex": "./test/e2e.spec.js",
-    "testEnvironment": "./config/jest-debug-env.js",
-    "rootDir": "..",
-    "testTimeout": 30000,
-};
-
--- a/config/vite.config.js
+++ b/config/vite.config.js
@ -11,6 +11,12 @@ const viteCompressionFilter = /\.(js|mjs|json|css|html|svg)$/i;

 // https://vitejs.dev/config/
 export default defineConfig({
+    server: {
+        port: 3000,
+    },
+    define: {
+        "FRONTEND_VERSION": JSON.stringify(process.env.npm_package_version),
+    },
    plugins: [
        vue(),
        legacy({
--- a/db/patch-add-clickable-status-page-link.sql
+++ b/db/patch-add-clickable-status-page-link.sql
@ -0,0 +1,5 @@
+-- You should not modify if this have pushed to Github, unless it does serious wrong with the db.
+BEGIN TRANSACTION;
+ALTER TABLE monitor_group
+    ADD send_url BOOLEAN DEFAULT 0 NOT NULL;
+COMMIT;
--- a/db/patch-add-docker-columns.sql
+++ b/db/patch-add-docker-columns.sql
@ -0,0 +1,18 @@
+-- You should not modify if this have pushed to Github, unless it does serious wrong with the db.
+BEGIN TRANSACTION;
+
+CREATE TABLE docker_host (
+	id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
+	user_id INT NOT NULL,
+	docker_daemon VARCHAR(255),
+	docker_type VARCHAR(255),
+	name VARCHAR(255)
+);
+
+ALTER TABLE monitor
+	ADD docker_host INTEGER REFERENCES docker_host(id);
+
+ALTER TABLE monitor
+	ADD docker_container VARCHAR(255);
+
+COMMIT;
--- a/db/patch-add-radius-monitor.sql
+++ b/db/patch-add-radius-monitor.sql
@ -0,0 +1,18 @@
+BEGIN TRANSACTION;
+
+ALTER TABLE monitor
+    ADD radius_username VARCHAR(255);
+
+ALTER TABLE monitor
+    ADD radius_password VARCHAR(255);
+
+ALTER TABLE monitor
+    ADD radius_calling_station_id VARCHAR(50);
+
+ALTER TABLE monitor
+    ADD radius_called_station_id VARCHAR(50);
+
+ALTER TABLE monitor
+    ADD radius_secret VARCHAR(255);
+
+COMMIT
--- a/db/patch-grpc-monitor.sql
+++ b/db/patch-grpc-monitor.sql
@ -0,0 +1,25 @@
+-- You should not modify if this have pushed to Github, unless it does serious wrong with the db.
+BEGIN TRANSACTION;
+
+ALTER TABLE monitor
+    ADD grpc_url VARCHAR(255) default null;
+
+ALTER TABLE monitor
+    ADD grpc_protobuf TEXT default null;
+
+ALTER TABLE monitor
+    ADD grpc_body TEXT default null;
+
+ALTER TABLE monitor
+    ADD grpc_metadata TEXT default null;
+
+ALTER TABLE monitor
+    ADD grpc_method VARCHAR(255) default null;
+
+ALTER TABLE monitor
+    ADD grpc_service_name VARCHAR(255) default null;
+
+ALTER TABLE monitor
+    ADD grpc_enable_tls BOOLEAN default 0 not null;
+
+COMMIT;
--- a/db/patch-maintenance-table2.sql
+++ b/db/patch-maintenance-table2.sql
@ -0,0 +1,83 @@
+-- You should not modify if this have pushed to Github, unless it does serious wrong with the db.
+BEGIN TRANSACTION;
+
+-- Just for someone who tested maintenance before (patch-maintenance-table.sql)
+DROP TABLE IF EXISTS maintenance_status_page;
+DROP TABLE IF EXISTS monitor_maintenance;
+DROP TABLE IF EXISTS maintenance;
+DROP TABLE IF EXISTS maintenance_timeslot;
+
+-- maintenance
+CREATE TABLE [maintenance] (
+    [id] INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,
+    [title] VARCHAR(150) NOT NULL,
+    [description] TEXT NOT NULL,
+    [user_id] INTEGER REFERENCES [user]([id]) ON DELETE SET NULL ON UPDATE CASCADE,
+    [active] BOOLEAN NOT NULL DEFAULT 1,
+    [strategy] VARCHAR(50) NOT NULL DEFAULT 'single',
+    [start_date] DATETIME,
+    [end_date] DATETIME,
+    [start_time] TIME,
+    [end_time] TIME,
+    [weekdays] VARCHAR2(250) DEFAULT '[]',
+    [days_of_month] TEXT DEFAULT '[]',
+    [interval_day] INTEGER
+);
+
+CREATE INDEX [manual_active] ON [maintenance] (
+    [strategy],
+    [active]
+);
+
+CREATE INDEX [active] ON [maintenance] ([active]);
+
+CREATE INDEX [maintenance_user_id] ON [maintenance] ([user_id]);
+
+-- maintenance_status_page
+CREATE TABLE maintenance_status_page (
+    id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
+    status_page_id INTEGER NOT NULL,
+    maintenance_id INTEGER NOT NULL,
+    CONSTRAINT FK_maintenance FOREIGN KEY (maintenance_id) REFERENCES maintenance (id) ON DELETE CASCADE ON UPDATE CASCADE,
+    CONSTRAINT FK_status_page FOREIGN KEY (status_page_id) REFERENCES status_page (id) ON DELETE CASCADE ON UPDATE CASCADE
+);
+
+CREATE INDEX [status_page_id_index]
+    ON [maintenance_status_page]([status_page_id]);
+
+CREATE INDEX [maintenance_id_index]
+    ON [maintenance_status_page]([maintenance_id]);
+
+-- maintenance_timeslot
+CREATE TABLE [maintenance_timeslot] (
+    [id] INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,
+    [maintenance_id] INTEGER NOT NULL CONSTRAINT [FK_maintenance] REFERENCES [maintenance]([id]) ON DELETE CASCADE ON UPDATE CASCADE,
+    [start_date] DATETIME NOT NULL,
+    [end_date] DATETIME,
+    [generated_next] BOOLEAN DEFAULT 0
+);
+
+CREATE INDEX [maintenance_id] ON [maintenance_timeslot] ([maintenance_id] DESC);
+
+CREATE INDEX [active_timeslot_index] ON [maintenance_timeslot] (
+    [maintenance_id] DESC,
+    [start_date] DESC,
+    [end_date] DESC
+);
+
+CREATE INDEX [generated_next_index] ON [maintenance_timeslot] ([generated_next]);
+
+-- monitor_maintenance
+CREATE TABLE monitor_maintenance (
+    id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
+    monitor_id INTEGER NOT NULL,
+    maintenance_id INTEGER NOT NULL,
+    CONSTRAINT FK_maintenance FOREIGN KEY (maintenance_id) REFERENCES maintenance (id) ON DELETE CASCADE ON UPDATE CASCADE,
+    CONSTRAINT FK_monitor FOREIGN KEY (monitor_id) REFERENCES monitor (id) ON DELETE CASCADE ON UPDATE CASCADE
+);
+
+CREATE INDEX [maintenance_id_index2] ON [monitor_maintenance]([maintenance_id]);
+
+CREATE INDEX [monitor_id_index] ON [monitor_maintenance]([monitor_id]);
+
+COMMIT;
--- a/db/patch-monitor-add-resend-interval.sql
+++ b/db/patch-monitor-add-resend-interval.sql
@ -0,0 +1,10 @@
+-- You should not modify if this have pushed to Github, unless it does serious wrong with the db.
+BEGIN TRANSACTION;
+
+ALTER TABLE monitor
+    ADD resend_interval INTEGER default 0 not null;
+
+ALTER TABLE heartbeat
+    ADD down_count INTEGER default 0 not null;
+
+COMMIT;
--- a/docker/alpine-base.dockerfile
+++ b/docker/alpine-base.dockerfile
@ -4,5 +4,5 @@ WORKDIR /app

 # Install apprise, iputils for non-root ping, setpriv
 RUN apk add --no-cache iputils setpriv dumb-init python3 py3-cryptography py3-pip py3-six py3-yaml py3-click py3-markdown py3-requests py3-requests-oauthlib && \
-    pip3 --no-cache-dir install apprise==0.9.8.3 && \
+    pip3 --no-cache-dir install apprise==1.2.1 && \
    rm -rf /root/.cache
--- a/docker/builder-go.dockerfile
+++ b/docker/builder-go.dockerfile
@ -0,0 +1,16 @@
+############################################
+# Build in Golang
+# Run npm run build-healthcheck-armv7 in the host first, another it will be super slow where it is building the armv7 healthcheck
+############################################
+FROM golang:1.19.4-buster
+WORKDIR /app
+ARG TARGETPLATFORM
+COPY ./extra/ ./extra/
+
+# Compile healthcheck.go
+RUN apt update && \
+    apt --yes --no-install-recommends install curl && \
+    curl -sL https://deb.nodesource.com/setup_18.x | bash && \
+    apt --yes --no-install-recommends install nodejs && \
+    node ./extra/build-healthcheck.js $TARGETPLATFORM && \
+    apt --yes remove nodejs
--- a/docker/debian-base.dockerfile
+++ b/docker/debian-base.dockerfile
@ -11,7 +11,7 @@ WORKDIR /app
 RUN apt update && \
    apt --yes --no-install-recommends install python3 python3-pip python3-cryptography python3-six python3-yaml python3-click python3-markdown python3-requests python3-requests-oauthlib \
        sqlite3 iputils-ping util-linux dumb-init && \
-    pip3 --no-cache-dir install apprise==0.9.8.3 && \
+    pip3 --no-cache-dir install apprise==1.2.1 && \
    rm -rf /var/lib/apt/lists/* && \
    apt --yes autoremove

--- a/docker/docker-compose.yml
+++ b/docker/docker-compose.yml
@ -1,4 +1,4 @@
-# Simple docker-composer.yml
+# Simple docker-compose.yml
 # You can change your port or volume location

 version: '3.3'
--- a/docker/dockerfile
+++ b/docker/dockerfile
@ -1,31 +1,82 @@
+############################################
+# Build in Golang
+# Run npm run build-healthcheck-armv7 in the host first, another it will be super slow where it is building the armv7 healthcheck
+# Check file: builder-go.dockerfile
+############################################
+FROM louislam/uptime-kuma:builder-go AS build_healthcheck
+
+############################################
+# Build in Node.js
+############################################
 FROM louislam/uptime-kuma:base-debian AS build
 WORKDIR /app

 ENV PUPPETEER_SKIP_CHROMIUM_DOWNLOAD=1
-
+COPY .npmrc .npmrc
+COPY package.json package.json
+COPY package-lock.json package-lock.json
+RUN npm ci --omit=dev
 COPY . .
-RUN npm ci --production && \
-    chmod +x /app/extra/entrypoint.sh
-
+COPY --from=build_healthcheck /app/extra/healthcheck /app/extra/healthcheck
+RUN chmod +x /app/extra/entrypoint.sh

+############################################
+# ⭐ Main Image
+############################################
 FROM louislam/uptime-kuma:base-debian AS release
 WORKDIR /app

 # Copy app files from build layer
 COPY --from=build /app /app

+
 EXPOSE 3001
 VOLUME ["/app/data"]
-HEALTHCHECK --interval=60s --timeout=30s --start-period=180s --retries=5 CMD node extra/healthcheck.js
+HEALTHCHECK --interval=60s --timeout=30s --start-period=180s --retries=5 CMD extra/healthcheck
 ENTRYPOINT ["/usr/bin/dumb-init", "--", "extra/entrypoint.sh"]
 CMD ["node", "server/server.js"]

-
+############################################
+# Mark as Nightly
+############################################
 FROM release AS nightly
 RUN npm run mark-as-nightly

+############################################
+# Build an image for testing pr
+############################################
+FROM louislam/uptime-kuma:base-debian AS pr-test

+WORKDIR /app
+
+ENV PUPPETEER_SKIP_CHROMIUM_DOWNLOAD=1
+
+## Install Git
+RUN apt update \
+    && apt --yes --no-install-recommends install curl \
+    && curl -fsSL https://cli.github.com/packages/githubcli-archive-keyring.gpg | dd of=/usr/share/keyrings/githubcli-archive-keyring.gpg \
+    && chmod go+r /usr/share/keyrings/githubcli-archive-keyring.gpg \
+    && echo "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/githubcli-archive-keyring.gpg] https://cli.github.com/packages stable main" | tee /etc/apt/sources.list.d/github-cli.list > /dev/null \
+    && apt update \
+    && apt --yes --no-install-recommends  install git
+
+## Empty the directory, because we have to clone the Git repo.
+RUN rm -rf ./* && chown node /app
+
+USER node
+RUN git config --global user.email "no-reply@no-reply.com"
+RUN git config --global user.name "PR Tester"
+RUN git clone https://github.com/louislam/uptime-kuma.git .
+RUN npm ci
+
+EXPOSE 3000 3001
+VOLUME ["/app/data"]
+HEALTHCHECK --interval=60s --timeout=30s --start-period=180s --retries=5 CMD node extra/healthcheck.js
+CMD ["npm", "run", "start-pr-test"]
+
+############################################
 # Upload the artifact to Github
+############################################
 FROM louislam/uptime-kuma:base-debian AS upload-artifact
 WORKDIR /
 RUN apt update && \
--- a/docker/dockerfile-alpine
+++ b/docker/dockerfile-alpine
@ -3,10 +3,12 @@ WORKDIR /app

 ENV PUPPETEER_SKIP_CHROMIUM_DOWNLOAD=1

+COPY .npmrc .npmrc
+COPY package.json package.json
+COPY package-lock.json package-lock.json
+RUN npm ci --omit=dev
 COPY . .
-RUN npm ci --production && \
-    chmod +x /app/extra/entrypoint.sh
-
+RUN chmod +x /app/extra/entrypoint.sh

 FROM louislam/uptime-kuma:base-alpine AS release
 WORKDIR /app
--- a/extra/beta/update-version.js
+++ b/extra/beta/update-version.js
@ -32,6 +32,10 @@ if (! exists) {
    process.exit(1);
 }

+/**
+ * Commit updated files
+ * @param {string} version Version to update to
+ */
 function commit(version) {
    let msg = "Update to " + version;

@ -47,6 +51,10 @@ function commit(version) {
    console.log(res.stdout.toString().trim());
 }

+/**
+ * Create a tag with the specified version
+ * @param {string} version Tag to create
+ */
 function tag(version) {
    let res = childProcess.spawnSync("git", [ "tag", version ]);
    console.log(res.stdout.toString().trim());
@ -55,6 +63,11 @@ function tag(version) {
    console.log(res.stdout.toString().trim());
 }

+/**
+ * Check if a tag exists for the specified version
+ * @param {string} version Version to check
+ * @returns {boolean} Does the tag already exist
+ */
 function tagExists(version) {
    if (! version) {
        throw new Error("invalid version");
--- a/extra/build-healthcheck.js
+++ b/extra/build-healthcheck.js
@ -0,0 +1,27 @@
+const childProcess = require("child_process");
+const fs = require("fs");
+const platform = process.argv[2];
+
+if (!platform) {
+    console.error("No platform??");
+    process.exit(1);
+}
+
+if (platform === "linux/arm/v7") {
+    console.log("Arch: armv7");
+    if (fs.existsSync("./extra/healthcheck-armv7")) {
+        fs.renameSync("./extra/healthcheck-armv7", "./extra/healthcheck");
+        console.log("Already built in the host, skip.");
+        process.exit(0);
+    } else {
+        console.log("prebuilt not found, it will be slow! You should execute `npm run build-healthcheck-armv7` before build.");
+    }
+} else {
+    if (fs.existsSync("./extra/healthcheck-armv7")) {
+        fs.rmSync("./extra/healthcheck-armv7");
+    }
+}
+
+const output = childProcess.execSync("go build -x -o ./extra/healthcheck ./extra/healthcheck.go").toString("utf8");
+console.log(output);
+
--- a/extra/checkout-pr.js
+++ b/extra/checkout-pr.js
@ -0,0 +1,33 @@
+const childProcess = require("child_process");
+
+if (!process.env.UPTIME_KUMA_GH_REPO) {
+    console.error("Please set a repo to the environment variable 'UPTIME_KUMA_GH_REPO' (e.g. mhkarimi1383:goalert-notification)");
+    process.exit(1);
+}
+
+let inputArray = process.env.UPTIME_KUMA_GH_REPO.split(":");
+
+if (inputArray.length !== 2) {
+    console.error("Invalid format. Please set a repo to the environment variable 'UPTIME_KUMA_GH_REPO' (e.g. mhkarimi1383:goalert-notification)");
+}
+
+let name = inputArray[0];
+let branch = inputArray[1];
+
+console.log("Checkout pr");
+
+// Checkout the pr
+let result = childProcess.spawnSync("git", [ "remote", "add", name, `https://github.com/${name}/uptime-kuma` ]);
+
+console.log(result.stdout.toString());
+console.error(result.stderr.toString());
+
+result = childProcess.spawnSync("git", [ "fetch", name, branch ]);
+
+console.log(result.stdout.toString());
+console.error(result.stderr.toString());
+
+result = childProcess.spawnSync("git", [ "checkout", `${name}/${branch}`, "--force" ]);
+
+console.log(result.stdout.toString());
+console.error(result.stderr.toString());
--- a/extra/download-cloudflared.js
+++ b/extra/download-cloudflared.js
@ -25,6 +25,10 @@ if (platform === "linux/amd64") {
 const file = fs.createWriteStream("cloudflared.deb");
 get("https://github.com/cloudflare/cloudflared/releases/latest/download/cloudflared-linux-" + arch + ".deb");

+/**
+ * Download specified file
+ * @param {string} url URL to request
+ */
 function get(url) {
    http.get(url, function (res) {
        if (res.statusCode >= 300 && res.statusCode < 400 && res.headers.location) {
--- a/extra/healthcheck.go
+++ b/extra/healthcheck.go
@ -0,0 +1,81 @@
+/*
+ * If changed, have to run `npm run build-docker-builder-go`.
+ * This script should be run after a period of time (180s), because the server may need some time to prepare.
+ */
+package main
+
+import (
+	"crypto/tls"
+	"io/ioutil"
+	"log"
+	"net/http"
+	"os"
+	"runtime"
+	"time"
+)
+
+func main() {
+	isFreeBSD := runtime.GOOS == "freebsd"
+
+	// process.env.NODE_TLS_REJECT_UNAUTHORIZED = "0";
+	http.DefaultTransport.(*http.Transport).TLSClientConfig = &tls.Config{
+		InsecureSkipVerify: true,
+	}
+
+	client := http.Client{
+		Timeout: 28 * time.Second,
+	}
+
+	sslKey := os.Getenv("UPTIME_KUMA_SSL_KEY")
+	if len(sslKey) == 0 {
+		sslKey = os.Getenv("SSL_KEY")
+	}
+
+	sslCert := os.Getenv("UPTIME_KUMA_SSL_CERT")
+	if len(sslCert) == 0 {
+		sslCert = os.Getenv("SSL_CERT")
+	}
+
+	hostname := os.Getenv("UPTIME_KUMA_HOST")
+	if len(hostname) == 0 && !isFreeBSD {
+		hostname = os.Getenv("HOST")
+	}
+	if len(hostname) == 0 {
+		hostname = "127.0.0.1"
+	}
+
+	port := os.Getenv("UPTIME_KUMA_PORT")
+	if len(port) == 0 {
+		port = os.Getenv("PORT")
+	}
+	if len(port) == 0 {
+		port = "3001"
+	}
+
+	protocol := ""
+	if len(sslKey) != 0 && len(sslCert) != 0 {
+		protocol = "https"
+	} else {
+		protocol = "http"
+	}
+
+	url := protocol + "://" + hostname + ":" + port
+
+	log.Println("Checking " + url)
+	resp, err := client.Get(url)
+
+	if err != nil {
+		log.Fatalln(err)
+	}
+
+	defer resp.Body.Close()
+
+	_, err = ioutil.ReadAll(resp.Body)
+
+	if err != nil {
+		log.Fatalln(err)
+	}
+
+	log.Printf("Health Check OK [Res Code: %d]\n", resp.StatusCode)
+
+}
--- a/extra/healthcheck.js
+++ b/extra/healthcheck.js
@ -1,4 +1,5 @@
 /*
+ * ⚠️ Deprecated: Changed to healthcheck.go, it will be deleted in the future.
 * This script should be run after a period of time (180s), because the server may need some time to prepare.
 */
 const { FBSD } = require("../server/util-server");
--- a/extra/mark-as-nightly.js
+++ b/extra/mark-as-nightly.js
@ -5,7 +5,7 @@ const util = require("../src/util");
 util.polyfill();

 const oldVersion = pkg.version;
-const newVersion = oldVersion + "-nightly";
+const newVersion = oldVersion + "-nightly-" + util.genSecret(8);

 console.log("Old Version: " + oldVersion);
 console.log("New Version: " + newVersion);
--- a/extra/remove-2fa.js
+++ b/extra/remove-2fa.js
@ -43,6 +43,11 @@ const main = async () => {
    console.log("Finished.");
 };

+/**
+ * Ask question of user
+ * @param {string} question Question to ask
+ * @returns {Promise<string>} Users response
+ */
 function question(question) {
    return new Promise((resolve) => {
        rl.question(question, (answer) => {
--- a/extra/reset-password.js
+++ b/extra/reset-password.js
@ -53,6 +53,11 @@ const main = async () => {
    console.log("Finished.");
 };

+/**
+ * Ask question of user
+ * @param {string} question Question to ask
+ * @returns {Promise<string>} Users response
+ */
 function question(question) {
    return new Promise((resolve) => {
        rl.question(question, (answer) => {
--- a/extra/simple-dns-server.js
+++ b/extra/simple-dns-server.js
@ -135,6 +135,11 @@ server.listen({
    udp: 5300
 });

+/**
+ * Get human readable request type from request code
+ * @param {number} code Request code to translate
+ * @returns {string} Human readable request type
+ */
 function type(code) {
    for (let name in Packet.TYPE) {
        if (Packet.TYPE[name] === code) {
--- a/extra/simple-mqtt-server.js
+++ b/extra/simple-mqtt-server.js
@ -11,6 +11,7 @@ class SimpleMqttServer {
        this.port = port;
    }

+    /** Start the MQTT server */
    start() {
        this.server.listen(this.port, () => {
            console.log("server started and listening on port ", this.port);
--- a/extra/update-language-files/index.js
+++ b/extra/update-language-files/index.js
@ -1,51 +1,45 @@
 // Need to use ES6 to read language files

 import fs from "fs";
-import path from "path";
 import util from "util";
 import rmSync from "../fs-rmSync.js";

-// https://stackoverflow.com/questions/13786160/copy-folder-recursively-in-node-js
 /**
- * Look ma, it's cp -R.
- * @param {string} src  The path to the thing to copy.
- * @param {string} dest The path to the new copy.
+ * Copy across the required language files
+ * Creates a local directory (./languages) and copies the required files
+ * into it.
+ * @param {string} langCode Code of language to update. A file will be
+ * created with this code if one does not already exist
+ * @param {string} baseLang The second base language file to copy. This
+ * will be ignored if set to "en" as en.js is copied by default
 */
-const copyRecursiveSync = function (src, dest) {
-    let exists = fs.existsSync(src);
-    let stats = exists && fs.statSync(src);
-    let isDirectory = exists && stats.isDirectory();
+function copyFiles(langCode, baseLang) {
+    if (fs.existsSync("./languages")) {
+        rmSync("./languages", { recursive: true });
+    }
+    fs.mkdirSync("./languages");

-    if (isDirectory) {
-        fs.mkdirSync(dest);
-        fs.readdirSync(src).forEach(function (childItemName) {
-            copyRecursiveSync(path.join(src, childItemName),
-                path.join(dest, childItemName));
-        });
+    if (!fs.existsSync(`../../src/languages/${langCode}.js`)) {
+        fs.closeSync(fs.openSync(`./languages/${langCode}.js`, "a"));
    } else {
-        fs.copyFileSync(src, dest);
+        fs.copyFileSync(`../../src/languages/${langCode}.js`, `./languages/${langCode}.js`);
+    }
+    fs.copyFileSync("../../src/languages/en.js", "./languages/en.js");
+    if (baseLang !== "en") {
+        fs.copyFileSync(`../../src/languages/${baseLang}.js`, `./languages/${baseLang}.js`);
    }
-};
-
-console.log("Arguments:", process.argv);
-const baseLangCode = process.argv[2] || "en";
-console.log("Base Lang: " + baseLangCode);
-if (fs.existsSync("./languages")) {
-    rmSync("./languages", { recursive: true });
 }
-copyRecursiveSync("../../src/languages", "./languages");

-const en = (await import("./languages/en.js")).default;
-const baseLang = (await import(`./languages/${baseLangCode}.js`)).default;
-const files = fs.readdirSync("./languages");
-console.log("Files:", files);
-
-for (const file of files) {
-    if (! file.endsWith(".js")) {
-        console.log("Skipping " + file);
-        continue;
-    }
+/**
+ * Update the specified language file
+ * @param {string} langCode Language code to update
+ * @param {string} baseLang Second language to copy keys from
+ */
+async function updateLanguage(langCode, baseLangCode) {
+    const en = (await import("./languages/en.js")).default;
+    const baseLang = (await import(`./languages/${baseLangCode}.js`)).default;

+    let file = langCode + ".js";
    console.log("Processing " + file);
    const lang = await import("./languages/" + file);

@ -83,5 +77,20 @@ for (const file of files) {
    fs.writeFileSync(`../../src/languages/${file}`, code);
 }

+// Get command line arguments
+const baseLangCode = process.env.npm_config_baselang || "en";
+const langCode = process.env.npm_config_language;
+
+// We need the file to edit
+if (langCode == null) {
+    throw new Error("Argument --language=<code> must be provided");
+}
+
+console.log("Base Lang: " + baseLangCode);
+console.log("Updating: " + langCode);
+
+copyFiles(langCode, baseLangCode);
+await updateLanguage(langCode, baseLangCode);
 rmSync("./languages", { recursive: true });
+
 console.log("Done. Fixing formatting by ESLint...");
--- a/extra/update-version.js
+++ b/extra/update-version.js
@ -36,10 +36,8 @@ if (! exists) {
 }

 /**
- * Updates the version number in package.json and commits it to git.
- * @param {string} version - The new version number
- *
- * Generated by Trelent
+ * Commit updated files
+ * @param {string} version Version to update to
 */
 function commit(version) {
    let msg = "Update to " + version;
@ -53,16 +51,19 @@ function commit(version) {
    }
 }

+/**
+ * Create a tag with the specified version
+ * @param {string} version Tag to create
+ */
 function tag(version) {
    let res = childProcess.spawnSync("git", [ "tag", version ]);
    console.log(res.stdout.toString().trim());
 }

 /**
- * Checks if a given version is already tagged in the git repository.
- * @param {string} version - The version to check for.
- *
- * Generated by Trelent
+ * Check if a tag exists for the specified version
+ * @param {string} version Version to check
+ * @returns {boolean} Does the tag already exist
 */
 function tagExists(version) {
    if (! version) {
--- a/extra/update-wiki-version.js
+++ b/extra/update-wiki-version.js
@ -10,6 +10,10 @@ if (!newVersion) {

 updateWiki(newVersion);

+/**
+ * Update the wiki with new version number
+ * @param {string} newVersion Version to update to
+ */
 function updateWiki(newVersion) {
    const wikiDir = "./tmp/wiki";
    const howToUpdateFilename = "./tmp/wiki/🆙-How-to-Update.md";
@ -39,9 +43,13 @@ function updateWiki(newVersion) {
    safeDelete(wikiDir);
 }

+/**
+ * Check if a directory exists and then delete it
+ * @param {string} dir Directory to delete
+ */
 function safeDelete(dir) {
    if (fs.existsSync(dir)) {
-        fs.rmdirSync(dir, {
+        fs.rm(dir, {
            recursive: true,
        });
    }
--- a/package-lock.json
+++ b/package-lock.json
--- a/package.json
+++ b/package.json
@ -1,6 +1,6 @@
 {
    "name": "uptime-kuma",
-    "version": "1.17.0-beta.0",
+    "version": "1.19.6",
    "license": "MIT",
    "repository": {
        "type": "git",
@ -23,23 +23,23 @@
        "start-server": "node server/server.js",
        "start-server-dev": "cross-env NODE_ENV=development node server/server.js",
        "build": "vite build --config ./config/vite.config.js",
-        "test": "node test/prepare-test-server.js && node server/server.js --port=3002 --data-dir=./data/test/ --test",
+        "test": "node test/prepare-test-server.js && npm run jest-backend",
        "test-with-build": "npm run build && npm test",
-        "jest": "node test/prepare-jest.js && npm run jest-frontend && npm run jest-backend",
-        "jest-frontend": "cross-env TEST_FRONTEND=1 jest --config=./config/jest-frontend.config.js",
-        "jest-backend": "cross-env TEST_BACKEND=1 jest --config=./config/jest-backend.config.js",
+        "jest-backend": "cross-env TEST_BACKEND=1 jest --runInBand --detectOpenHandles --forceExit --config=./config/jest-backend.config.js",
        "tsc": "tsc",
        "vite-preview-dist": "vite preview --host --config ./config/vite.config.js",
        "build-docker": "npm run build && npm run build-docker-debian && npm run build-docker-alpine",
        "build-docker-alpine-base": "docker buildx build -f docker/alpine-base.dockerfile --platform linux/amd64,linux/arm64,linux/arm/v7 -t louislam/uptime-kuma:base-alpine . --push",
        "build-docker-debian-base": "docker buildx build -f docker/debian-base.dockerfile --platform linux/amd64,linux/arm64,linux/arm/v7 -t louislam/uptime-kuma:base-debian . --push",
+        "build-docker-builder-go": "docker buildx build -f docker/builder-go.dockerfile --platform linux/amd64,linux/arm64,linux/arm/v7 -t louislam/uptime-kuma:builder-go . --push",
        "build-docker-alpine": "node ./extra/env2arg.js docker buildx build -f docker/dockerfile-alpine --platform linux/amd64,linux/arm64,linux/arm/v7 -t louislam/uptime-kuma:alpine -t louislam/uptime-kuma:1-alpine -t louislam/uptime-kuma:$VERSION-alpine --target release . --push",
        "build-docker-debian": "node ./extra/env2arg.js docker buildx build -f docker/dockerfile --platform linux/amd64,linux/arm64,linux/arm/v7 -t louislam/uptime-kuma -t louislam/uptime-kuma:1 -t louislam/uptime-kuma:$VERSION -t louislam/uptime-kuma:debian -t louislam/uptime-kuma:1-debian -t louislam/uptime-kuma:$VERSION-debian --target release . --push",
        "build-docker-nightly": "npm run build && docker buildx build -f docker/dockerfile --platform linux/amd64,linux/arm64,linux/arm/v7 -t louislam/uptime-kuma:nightly --target nightly . --push",
        "build-docker-nightly-alpine": "docker buildx build -f docker/dockerfile-alpine --platform linux/amd64,linux/arm64,linux/arm/v7 -t louislam/uptime-kuma:nightly-alpine --target nightly . --push",
        "build-docker-nightly-amd64": "docker buildx build -f docker/dockerfile --platform linux/amd64 -t louislam/uptime-kuma:nightly-amd64 --target nightly . --push --progress plain",
+        "build-docker-pr-test": "docker buildx build -f docker/dockerfile --platform linux/amd64,linux/arm64 -t louislam/uptime-kuma:pr-test --target pr-test . --push",
        "upload-artifacts": "docker buildx build -f docker/dockerfile --platform linux/amd64 -t louislam/uptime-kuma:upload-artifact --build-arg VERSION --build-arg GITHUB_TOKEN --target upload-artifact . --progress plain",
-        "setup": "git checkout 1.16.1 && npm ci --production && npm run download-dist",
+        "setup": "git checkout 1.19.6 && npm ci --production && npm run download-dist",
        "download-dist": "node extra/download-dist.js",
        "mark-as-nightly": "node extra/mark-as-nightly.js",
        "reset-password": "node extra/reset-password.js",
@ -52,116 +52,129 @@
        "test-nodejs16": "docker build --progress plain -f test/ubuntu-nodejs16.dockerfile .",
        "simple-dns-server": "node extra/simple-dns-server.js",
        "simple-mqtt-server": "node extra/simple-mqtt-server.js",
-        "update-language-files-with-base-lang": "cd extra/update-language-files && node index.js %npm_config_base_lang% && eslint ../../src/languages/**.js --fix",
-        "update-language-files": "cd extra/update-language-files && node index.js && eslint ../../src/languages/**.js --fix",
+        "update-language-files": "cd extra/update-language-files && node index.js && cross-env-shell eslint ../../src/languages/$npm_config_language.js --fix",
        "ncu-patch": "npm-check-updates -u -t patch",
        "release-final": "node extra/update-version.js && npm run build-docker && node ./extra/press-any-key.js && npm run upload-artifacts && node ./extra/update-wiki-version.js",
        "release-beta": "node extra/beta/update-version.js && npm run build && node ./extra/env2arg.js docker buildx build -f docker/dockerfile --platform linux/amd64,linux/arm64,linux/arm/v7 -t louislam/uptime-kuma:$VERSION -t louislam/uptime-kuma:beta .  --target release --push && node ./extra/press-any-key.js && npm run upload-artifacts",
        "git-remove-tag": "git tag -d",
-        "build-dist-and-restart": "npm run build && npm run start-server-dev"
+        "build-dist-and-restart": "npm run build && npm run start-server-dev",
+        "start-pr-test": "node extra/checkout-pr.js && npm install && npm run dev",
+        "cy:test": "node test/prepare-test-server.js && node server/server.js --port=3002 --data-dir=./data/test/ --e2e",
+        "cy:run": "npx cypress run --browser chrome --headless --config-file ./config/cypress.config.js",
+        "cy:run:unit": "npx cypress run --browser chrome --headless --config-file ./config/cypress.frontend.config.js",
+        "cypress-open": "concurrently -k -r \"node test/prepare-test-server.js && node server/server.js --port=3002 --data-dir=./data/test/\" \"cypress open --config-file ./config/cypress.config.js\"",
+        "build-healthcheck-armv7": "cross-env GOOS=linux GOARCH=arm GOARM=7 go build -x -o ./extra/healthcheck-armv7 ./extra/healthcheck.go"
    },
    "dependencies": {
-        "@fortawesome/fontawesome-svg-core": "~1.2.36",
-        "@fortawesome/free-regular-svg-icons": "~5.15.4",
-        "@fortawesome/free-solid-svg-icons": "~5.15.4",
-        "@fortawesome/vue-fontawesome": "~3.0.0-5",
-        "@louislam/sqlite3": "~15.0.6",
-        "@popperjs/core": "~2.10.2",
+        "@grpc/grpc-js": "~1.7.3",
+        "@louislam/ping": "~0.4.2-mod.1",
+        "@louislam/sqlite3": "15.1.2",
        "args-parser": "~1.3.0",
-        "axios": "~0.26.1",
-        "axios-cached-dns-resolve": "^3.0.6",
-        "axios-ntlm": "^1.3.0",
-        "badge-maker": "^3.3.1",
+        "axios": "~0.27.0",
+        "axios-ntlm": "1.3.0",
+        "badge-maker": "~3.3.1",
        "bcryptjs": "~2.4.3",
-        "bootstrap": "5.1.3",
        "bree": "~7.1.5",
-        "chardet": "^1.3.0",
-        "chart.js": "~3.6.2",
-        "chartjs-adapter-dayjs": "~1.0.0",
+        "cacheable-lookup": "~6.0.4",
+        "chardet": "~1.4.0",
        "check-password-strength": "^2.0.5",
-        "cheerio": "^1.0.0-rc.10",
-        "chroma-js": "^2.1.2",
+        "cheerio": "~1.0.0-rc.12",
+        "chroma-js": "~2.4.2",
        "command-exists": "~1.2.9",
        "compare-versions": "~3.6.0",
-        "compression": "^1.7.4",
-        "dayjs": "^1.11.0",
-        "esm-wallaby": "^3.2.26",
+        "compression": "~1.7.4",
+        "dayjs": "~1.11.5",
        "express": "~4.17.3",
        "express-basic-auth": "~1.2.1",
-        "express-static-gzip": "^2.1.7",
-        "favico.js": "^0.3.10",
+        "express-static-gzip": "~2.1.7",
        "form-data": "~4.0.0",
        "http-graceful-shutdown": "~3.1.7",
-        "http-proxy-agent": "^5.0.0",
-        "https-proxy-agent": "^5.0.0",
-        "iconv-lite": "^0.6.3",
-        "jsonwebtoken": "~8.5.1",
-        "jwt-decode": "^3.1.2",
-        "limiter": "^2.1.0",
-        "mqtt": "^4.2.8",
-        "mssql": "^8.1.0",
+        "http-proxy-agent": "~5.0.0",
+        "https-proxy-agent": "~5.0.1",
+        "iconv-lite": "~0.6.3",
+        "jsesc": "~3.0.2",
+        "jsonwebtoken": "~9.0.0",
+        "jwt-decode": "~3.1.2",
+        "limiter": "~2.1.0",
+        "mongodb": "~4.13.0",
+        "mqtt": "~4.3.7",
+        "mssql": "~8.1.4",
+        "mysql2": "~2.3.3",
        "node-cloudflared-tunnel": "~1.0.9",
+        "node-radius-client": "~1.0.0",
        "nodemailer": "~6.6.5",
        "notp": "~2.0.3",
        "password-hash": "~1.2.2",
-        "postcss-rtlcss": "~3.4.1",
-        "postcss-scss": "~4.0.3",
-        "prismjs": "^1.27.0",
+        "pg": "~8.8.0",
+        "pg-connection-string": "~2.5.0",
        "prom-client": "~13.2.0",
        "prometheus-api-metrics": "~3.2.1",
-        "qrcode": "~1.5.0",
-        "redbean-node": "0.1.4",
-        "socket.io": "~4.4.1",
-        "socket.io-client": "~4.4.1",
-        "socks-proxy-agent": "^6.1.1",
-        "tar": "^6.1.11",
+        "protobufjs": "~7.1.1",
+        "redbean-node": "~0.2.0",
+        "redis": "~4.5.1",
+        "socket.io": "~4.5.3",
+        "socket.io-client": "~4.5.3",
+        "socks-proxy-agent": "6.1.1",
+        "tar": "~6.1.11",
        "tcp-ping": "~0.1.1",
-        "thirty-two": "~1.0.2",
-        "timezones-list": "~3.0.1",
-        "v-pagination-3": "~0.1.7",
-        "vue": "next",
-        "vue-chart-3": "3.0.9",
-        "vue-confirm-dialog": "~1.0.2",
-        "vue-contenteditable": "~3.0.4",
-        "vue-i18n": "~9.1.9",
-        "vue-image-crop-upload": "~3.0.3",
-        "vue-multiselect": "~3.0.0-alpha.2",
-        "vue-prism-editor": "^2.0.0-alpha.2",
-        "vue-qrcode": "~1.0.0",
-        "vue-router": "~4.0.14",
-        "vue-toastification": "~2.0.0-rc.5",
-        "vuedraggable": "~4.1.0"
+        "thirty-two": "~1.0.2"
    },
    "devDependencies": {
        "@actions/github": "~5.0.1",
        "@babel/eslint-parser": "~7.17.0",
        "@babel/preset-env": "^7.15.8",
+        "@fortawesome/fontawesome-svg-core": "~1.2.36",
+        "@fortawesome/free-regular-svg-icons": "~5.15.4",
+        "@fortawesome/free-solid-svg-icons": "~5.15.4",
+        "@fortawesome/vue-fontawesome": "~3.0.0-5",
+        "@popperjs/core": "~2.10.2",
        "@types/bootstrap": "~5.1.9",
-        "@vitejs/plugin-legacy": "~1.8.2",
-        "@vitejs/plugin-vue": "~2.3.3",
+        "@vitejs/plugin-legacy": "~2.1.0",
+        "@vitejs/plugin-vue": "~3.1.0",
        "@vue/compiler-sfc": "~3.2.36",
+        "@vuepic/vue-datepicker": "~3.4.8",
        "aedes": "^0.46.3",
        "babel-plugin-rewire": "~1.2.0",
+        "bootstrap": "5.1.3",
+        "chart.js": "~3.6.2",
+        "chartjs-adapter-dayjs": "~1.0.0",
        "concurrently": "^7.1.0",
-        "core-js": "~3.18.3",
+        "core-js": "~3.26.1",
        "cross-env": "~7.0.3",
+        "cypress": "^10.1.0",
        "delay": "^5.0.0",
        "dns2": "~2.0.1",
        "eslint": "~8.14.0",
        "eslint-plugin-vue": "~8.7.1",
+        "favico.js": "~0.3.10",
        "jest": "~27.2.5",
-        "jest-puppeteer": "~6.0.3",
-        "lru-cache": "^7.7.1",
-        "npm-check-updates": "^12.5.9",
-        "postcss-html": "^1.3.1",
-        "puppeteer": "~13.1.3",
+        "postcss-html": "~1.5.0",
+        "postcss-rtlcss": "~3.7.2",
+        "postcss-scss": "~4.0.4",
+        "prismjs": "~1.29.0",
+        "qrcode": "~1.5.0",
        "rollup-plugin-visualizer": "^5.6.0",
        "sass": "~1.42.1",
        "stylelint": "~14.7.1",
        "stylelint-config-standard": "~25.0.0",
+        "terser": "~5.15.0",
+        "timezones-list": "~3.0.1",
        "typescript": "~4.4.4",
-        "vite": "~2.9.9",
+        "v-pagination-3": "~0.1.7",
+        "vite": "~3.1.0",
        "vite-plugin-compression": "^0.5.1",
+        "vue": "next",
+        "vue-chart-3": "3.0.9",
+        "vue-confirm-dialog": "~1.0.2",
+        "vue-contenteditable": "~3.0.4",
+        "vue-i18n": "~9.2.2",
+        "vue-image-crop-upload": "~3.0.3",
+        "vue-multiselect": "~3.0.0-alpha.2",
+        "vue-prism-editor": "~2.0.0-alpha.2",
+        "vue-qrcode": "~1.0.0",
+        "vue-router": "~4.0.14",
+        "vue-toastification": "~2.0.0-rc.5",
+        "vuedraggable": "~4.1.0",
        "wait-on": "^6.0.1"
    }
 }
--- a/public/icon.svg
+++ b/public/icon.svg
--- a/server/auth.js
+++ b/server/auth.js
@ -63,6 +63,12 @@ function myAuthorizer(username, password, callback) {
    });
 }

+/**
+ * Use basic auth if auth is not disabled
+ * @param {express.Request} req Express request object
+ * @param {express.Response} res Express response object
+ * @param {express.NextFunction} next
+ */
 exports.basicAuth = async function (req, res, next) {
    const middleware = basicAuth({
        authorizer: myAuthorizer,
--- a/server/cacheable-dns-http-agent.js
+++ b/server/cacheable-dns-http-agent.js
@ -0,0 +1,86 @@
+const https = require("https");
+const http = require("http");
+const CacheableLookup = require("cacheable-lookup");
+const { Settings } = require("./settings");
+const { log } = require("../src/util");
+
+class CacheableDnsHttpAgent {
+
+    static cacheable = new CacheableLookup();
+
+    static httpAgentList = {};
+    static httpsAgentList = {};
+
+    static enable = false;
+
+    /**
+     * Register/Disable cacheable to global agents
+     */
+    static async update() {
+        log.debug("CacheableDnsHttpAgent", "update");
+        let isEnable = await Settings.get("dnsCache");
+
+        if (isEnable !== this.enable) {
+            log.debug("CacheableDnsHttpAgent", "value changed");
+
+            if (isEnable) {
+                log.debug("CacheableDnsHttpAgent", "enable");
+                this.cacheable.install(http.globalAgent);
+                this.cacheable.install(https.globalAgent);
+            } else {
+                log.debug("CacheableDnsHttpAgent", "disable");
+                this.cacheable.uninstall(http.globalAgent);
+                this.cacheable.uninstall(https.globalAgent);
+            }
+        }
+
+        this.enable = isEnable;
+    }
+
+    /**
+     * Attach cacheable to HTTP agent
+     * @param {http.Agent} agent Agent to install
+     */
+    static install(agent) {
+        this.cacheable.install(agent);
+    }
+
+    /**
+     * @var {https.AgentOptions} agentOptions
+     * @return {https.Agent}
+     */
+    static getHttpsAgent(agentOptions) {
+        if (!this.enable) {
+            return new https.Agent(agentOptions);
+        }
+
+        let key = JSON.stringify(agentOptions);
+        if (!(key in this.httpsAgentList)) {
+            this.httpsAgentList[key] = new https.Agent(agentOptions);
+            this.cacheable.install(this.httpsAgentList[key]);
+        }
+        return this.httpsAgentList[key];
+    }
+
+    /**
+     * @var {http.AgentOptions} agentOptions
+     * @return {https.Agents}
+     */
+    static getHttpAgent(agentOptions) {
+        if (!this.enable) {
+            return new http.Agent(agentOptions);
+        }
+
+        let key = JSON.stringify(agentOptions);
+        if (!(key in this.httpAgentList)) {
+            this.httpAgentList[key] = new http.Agent(agentOptions);
+            this.cacheable.install(this.httpAgentList[key]);
+        }
+        return this.httpAgentList[key];
+    }
+
+}
+
+module.exports = {
+    CacheableDnsHttpAgent,
+};
--- a/server/check-version.js
+++ b/server/check-version.js
@ -25,7 +25,7 @@ exports.startInterval = () => {
            let checkBeta = await setting("checkBeta");

            if (checkBeta && res.data.beta) {
-                if (compareVersions.compare(res.data.beta, res.data.beta, ">")) {
+                if (compareVersions.compare(res.data.beta, res.data.slow, ">")) {
                    exports.latestVersion = res.data.beta;
                    return;
                }
--- a/server/client.js
+++ b/server/client.js
@ -4,7 +4,8 @@
 const { TimeLogger } = require("../src/util");
 const { R } = require("redbean-node");
 const { UptimeKumaServer } = require("./uptime-kuma-server");
-const io = UptimeKumaServer.getInstance().io;
+const server = UptimeKumaServer.getInstance();
+const io = server.io;
 const { setting } = require("./util-server");
 const checkVersion = require("./check-version");

@ -121,14 +122,41 @@ async function sendInfo(socket) {
    socket.emit("info", {
        version: checkVersion.version,
        latestVersion: checkVersion.latestVersion,
-        primaryBaseURL: await setting("primaryBaseURL")
+        primaryBaseURL: await setting("primaryBaseURL"),
+        serverTimezone: await server.getTimezone(),
+        serverTimezoneOffset: server.getTimezoneOffset(),
    });
 }

+/**
+ * Send list of docker hosts to client
+ * @param {Socket} socket Socket.io socket instance
+ * @returns {Promise<Bean[]>}
+ */
+async function sendDockerHostList(socket) {
+    const timeLogger = new TimeLogger();
+
+    let result = [];
+    let list = await R.find("docker_host", " user_id = ? ", [
+        socket.userID,
+    ]);
+
+    for (let bean of list) {
+        result.push(bean.toJSON());
+    }
+
+    io.to(socket.userID).emit("dockerHostList", result);
+
+    timeLogger.print("Send Docker Host List");
+
+    return list;
+}
+
 module.exports = {
    sendNotificationList,
    sendImportantHeartbeatList,
    sendHeartbeatList,
    sendProxyList,
    sendInfo,
+    sendDockerHostList
 };
--- a/server/database.js
+++ b/server/database.js
@ -53,13 +53,19 @@ class Database {
        "patch-2fa-invalidate-used-token.sql": true,
        "patch-notification_sent_history.sql": true,
        "patch-monitor-basic-auth.sql": true,
+        "patch-add-docker-columns.sql": true,
        "patch-status-page.sql": true,
        "patch-proxy.sql": true,
        "patch-monitor-expiry-notification.sql": true,
        "patch-status-page-footer-css.sql": true,
        "patch-added-mqtt-monitor.sql": true,
+        "patch-add-clickable-status-page-link.sql": true,
        "patch-add-sqlserver-monitor.sql": true,
        "patch-add-other-auth.sql": { parents: [ "patch-monitor-basic-auth.sql" ] },
+        "patch-grpc-monitor.sql": true,
+        "patch-add-radius-monitor.sql": true,
+        "patch-monitor-add-resend-interval.sql": true,
+        "patch-maintenance-table2.sql": true,
    };

    /**
@ -177,7 +183,13 @@ class Database {
        } else {
            log.info("db", "Database patch is needed");

-            this.backup(version);
+            try {
+                this.backup(version);
+            } catch (e) {
+                log.error("db", e);
+                log.error("db", "Unable to create a backup before patching the database. Please make sure you have enough space and permission.");
+                process.exit(1);
+            }

            // Try catch anything here, if gone wrong, restore the backup
            try {
@ -445,6 +457,23 @@ class Database {
                this.backupWalPath = walPath + ".bak" + version;
                fs.copyFileSync(walPath, this.backupWalPath);
            }
+
+            // Double confirm if all files actually backup
+            if (!fs.existsSync(this.backupPath)) {
+                throw new Error("Backup failed! " + this.backupPath);
+            }
+
+            if (fs.existsSync(shmPath)) {
+                if (!fs.existsSync(this.backupShmPath)) {
+                    throw new Error("Backup failed! " + this.backupShmPath);
+                }
+            }
+
+            if (fs.existsSync(walPath)) {
+                if (!fs.existsSync(this.backupWalPath)) {
+                    throw new Error("Backup failed! " + this.backupWalPath);
+                }
+            }
        }
    }

--- a/server/docker.js
+++ b/server/docker.js
@ -0,0 +1,118 @@
+const axios = require("axios");
+const { R } = require("redbean-node");
+const version = require("../package.json").version;
+const https = require("https");
+
+class DockerHost {
+    /**
+     * Save a docker host
+     * @param {Object} dockerHost Docker host to save
+     * @param {?number} dockerHostID ID of the docker host to update
+     * @param {number} userID ID of the user who adds the docker host
+     * @returns {Promise<Bean>}
+     */
+    static async save(dockerHost, dockerHostID, userID) {
+        let bean;
+
+        if (dockerHostID) {
+            bean = await R.findOne("docker_host", " id = ? AND user_id = ? ", [ dockerHostID, userID ]);
+
+            if (!bean) {
+                throw new Error("docker host not found");
+            }
+
+        } else {
+            bean = R.dispense("docker_host");
+        }
+
+        bean.user_id = userID;
+        bean.docker_daemon = dockerHost.dockerDaemon;
+        bean.docker_type = dockerHost.dockerType;
+        bean.name = dockerHost.name;
+
+        await R.store(bean);
+
+        return bean;
+    }
+
+    /**
+     * Delete a Docker host
+     * @param {number} dockerHostID ID of the Docker host to delete
+     * @param {number} userID ID of the user who created the Docker host
+     * @returns {Promise<void>}
+     */
+    static async delete(dockerHostID, userID) {
+        let bean = await R.findOne("docker_host", " id = ? AND user_id = ? ", [ dockerHostID, userID ]);
+
+        if (!bean) {
+            throw new Error("docker host not found");
+        }
+
+        // Delete removed proxy from monitors if exists
+        await R.exec("UPDATE monitor SET docker_host = null WHERE docker_host = ?", [ dockerHostID ]);
+
+        await R.trash(bean);
+    }
+
+    /**
+     * Fetches the amount of containers on the Docker host
+     * @param {Object} dockerHost Docker host to check for
+     * @returns {number} Total amount of containers on the host
+     */
+    static async testDockerHost(dockerHost) {
+        const options = {
+            url: "/containers/json?all=true",
+            headers: {
+                "Accept": "*/*",
+                "User-Agent": "Uptime-Kuma/" + version
+            },
+            httpsAgent: new https.Agent({
+                maxCachedSessions: 0,      // Use Custom agent to disable session reuse (https://github.com/nodejs/node/issues/3940)
+                rejectUnauthorized: false,
+            }),
+        };
+
+        if (dockerHost.dockerType === "socket") {
+            options.socketPath = dockerHost.dockerDaemon;
+        } else if (dockerHost.dockerType === "tcp") {
+            options.baseURL = DockerHost.patchDockerURL(dockerHost.dockerDaemon);
+        }
+
+        let res = await axios.request(options);
+
+        if (Array.isArray(res.data)) {
+
+            if (res.data.length > 1) {
+
+                if ("ImageID" in res.data[0]) {
+                    return res.data.length;
+                } else {
+                    throw new Error("Invalid Docker response, is it Docker really a daemon?");
+                }
+
+            } else {
+                return res.data.length;
+            }
+
+        } else {
+            throw new Error("Invalid Docker response, is it Docker really a daemon?");
+        }
+
+    }
+
+    /**
+     * Since axios 0.27.X, it does not accept `tcp://` protocol.
+     * Change it to `http://` on the fly in order to fix it. (https://github.com/louislam/uptime-kuma/issues/2165)
+     */
+    static patchDockerURL(url) {
+        if (typeof url === "string") {
+            // Replace the first occurrence only with g
+            return url.replace(/tcp:\/\//g, "http://");
+        }
+        return url;
+    }
+}
+
+module.exports = {
+    DockerHost,
+};
--- a/server/jobs.js
+++ b/server/jobs.js
@ -32,6 +32,7 @@ const initBackgroundJobs = function (args) {
    return bree;
 };

+/** Stop all background jobs if running */
 const stopBackgroundJobs = function () {
    if (bree) {
        bree.stop();
--- a/server/jobs/clear-old-data.js
+++ b/server/jobs/clear-old-data.js
@ -25,15 +25,20 @@ const DEFAULT_KEEP_PERIOD = 180;
        parsedPeriod = DEFAULT_KEEP_PERIOD;
    }

-    log(`Clearing Data older than ${parsedPeriod} days...`);
+    if (parsedPeriod < 1) {
+        log(`Data deletion has been disabled as period is less than 1. Period is ${parsedPeriod} days.`);
+    } else {

-    try {
-        await R.exec(
-            "DELETE FROM heartbeat WHERE time < DATETIME('now', '-' || ? || ' days') ",
-            [ parsedPeriod ]
-        );
-    } catch (e) {
-        log(`Failed to clear old data: ${e.message}`);
+        log(`Clearing Data older than ${parsedPeriod} days...`);
+
+        try {
+            await R.exec(
+                "DELETE FROM heartbeat WHERE time < DATETIME('now', '-' || ? || ' days') ",
+                [ parsedPeriod ]
+            );
+        } catch (e) {
+            log(`Failed to clear old data: ${e.message}`);
+        }
    }

    exit();
--- a/server/model/docker_host.js
+++ b/server/model/docker_host.js
@ -0,0 +1,19 @@
+const { BeanModel } = require("redbean-node/dist/bean-model");
+
+class DockerHost extends BeanModel {
+    /**
+     * Returns an object that ready to parse to JSON
+     * @returns {Object}
+     */
+    toJSON() {
+        return {
+            id: this.id,
+            userID: this.user_id,
+            dockerDaemon: this.docker_daemon,
+            dockerType: this.docker_type,
+            name: this.name,
+        };
+    }
+}
+
+module.exports = DockerHost;
--- a/server/model/group.js
+++ b/server/model/group.js
@ -31,7 +31,7 @@ class Group extends BeanModel {
     */
    async getMonitorList() {
        return R.convertToBeans("monitor", await R.getAll(`
-            SELECT monitor.* FROM monitor, monitor_group
+            SELECT monitor.*, monitor_group.send_url FROM monitor, monitor_group
            WHERE monitor.id = monitor_group.monitor_id
            AND group_id = ?
            ORDER BY monitor_group.weight
--- a/server/model/heartbeat.js
+++ b/server/model/heartbeat.js
@ -1,8 +1,3 @@
-const dayjs = require("dayjs");
-const utc = require("dayjs/plugin/utc");
-let timezone = require("dayjs/plugin/timezone");
-dayjs.extend(utc);
-dayjs.extend(timezone);
 const { BeanModel } = require("redbean-node/dist/bean-model");

 /**
@ -10,6 +5,7 @@ const { BeanModel } = require("redbean-node/dist/bean-model");
 *      0 = DOWN
 *      1 = UP
 *      2 = PENDING
+ *      3 = MAINTENANCE
 */
 class Heartbeat extends BeanModel {

--- a/server/model/maintenance.js
+++ b/server/model/maintenance.js
@ -0,0 +1,240 @@
+const { BeanModel } = require("redbean-node/dist/bean-model");
+const { parseTimeObject, parseTimeFromTimeObject, utcToLocal, localToUTC, log } = require("../../src/util");
+const { timeObjectToUTC, timeObjectToLocal } = require("../util-server");
+const { R } = require("redbean-node");
+const dayjs = require("dayjs");
+
+class Maintenance extends BeanModel {
+
+    /**
+     * Return an object that ready to parse to JSON for public
+     * Only show necessary data to public
+     * @returns {Object}
+     */
+    async toPublicJSON() {
+
+        let dateRange = [];
+        if (this.start_date) {
+            dateRange.push(utcToLocal(this.start_date));
+            if (this.end_date) {
+                dateRange.push(utcToLocal(this.end_date));
+            }
+        }
+
+        let timeRange = [];
+        let startTime = timeObjectToLocal(parseTimeObject(this.start_time));
+        timeRange.push(startTime);
+        let endTime = timeObjectToLocal(parseTimeObject(this.end_time));
+        timeRange.push(endTime);
+
+        let obj = {
+            id: this.id,
+            title: this.title,
+            description: this.description,
+            strategy: this.strategy,
+            intervalDay: this.interval_day,
+            active: !!this.active,
+            dateRange: dateRange,
+            timeRange: timeRange,
+            weekdays: (this.weekdays) ? JSON.parse(this.weekdays) : [],
+            daysOfMonth: (this.days_of_month) ? JSON.parse(this.days_of_month) : [],
+            timeslotList: [],
+        };
+
+        const timeslotList = await this.getTimeslotList();
+
+        for (let timeslot of timeslotList) {
+            obj.timeslotList.push(await timeslot.toPublicJSON());
+        }
+
+        if (!Array.isArray(obj.weekdays)) {
+            obj.weekdays = [];
+        }
+
+        if (!Array.isArray(obj.daysOfMonth)) {
+            obj.daysOfMonth = [];
+        }
+
+        // Maintenance Status
+        if (!obj.active) {
+            obj.status = "inactive";
+        } else if (obj.strategy === "manual") {
+            obj.status = "under-maintenance";
+        } else if (obj.timeslotList.length > 0) {
+            let currentTimestamp = dayjs().unix();
+
+            for (let timeslot of obj.timeslotList) {
+                if (dayjs.utc(timeslot.startDate).unix() <= currentTimestamp && dayjs.utc(timeslot.endDate).unix() >= currentTimestamp) {
+                    log.debug("timeslot", "Timeslot ID: " + timeslot.id);
+                    log.debug("timeslot", "currentTimestamp:" + currentTimestamp);
+                    log.debug("timeslot", "timeslot.start_date:" + dayjs.utc(timeslot.startDate).unix());
+                    log.debug("timeslot", "timeslot.end_date:" + dayjs.utc(timeslot.endDate).unix());
+
+                    obj.status = "under-maintenance";
+                    break;
+                }
+            }
+
+            if (!obj.status) {
+                obj.status = "scheduled";
+            }
+        } else if (obj.timeslotList.length === 0) {
+            obj.status = "ended";
+        } else {
+            obj.status = "unknown";
+        }
+
+        return obj;
+    }
+
+    /**
+     * Only get future or current timeslots only
+     * @returns {Promise<[]>}
+     */
+    async getTimeslotList() {
+        return R.convertToBeans("maintenance_timeslot", await R.getAll(`
+            SELECT maintenance_timeslot.*
+            FROM maintenance_timeslot, maintenance
+            WHERE maintenance_timeslot.maintenance_id = maintenance.id
+            AND maintenance.id = ?
+            AND ${Maintenance.getActiveAndFutureMaintenanceSQLCondition()}
+        `, [
+            this.id
+        ]));
+    }
+
+    /**
+     * Return an object that ready to parse to JSON
+     * @param {string} timezone If not specified, the timeRange will be in UTC
+     * @returns {Object}
+     */
+    async toJSON(timezone = null) {
+        return this.toPublicJSON(timezone);
+    }
+
+    /**
+     * Get a list of weekdays that the maintenance is active for
+     * Monday=1, Tuesday=2 etc.
+     * @returns {number[]} Array of active weekdays
+     */
+    getDayOfWeekList() {
+        log.debug("timeslot", "List: " + this.weekdays);
+        return JSON.parse(this.weekdays).sort(function (a, b) {
+            return a - b;
+        });
+    }
+
+    /**
+     * Get a list of days in month that maintenance is active for
+     * @returns {number[]} Array of active days in month
+     */
+    getDayOfMonthList() {
+        return JSON.parse(this.days_of_month).sort(function (a, b) {
+            return a - b;
+        });
+    }
+
+    /**
+     * Get the start date and time for maintenance
+     * @returns {dayjs.Dayjs} Start date and time
+     */
+    getStartDateTime() {
+        let startOfTheDay = dayjs.utc(this.start_date).format("HH:mm");
+        log.debug("timeslot", "startOfTheDay: " + startOfTheDay);
+
+        // Start Time
+        let startTimeSecond = dayjs.utc(this.start_time, "HH:mm").diff(dayjs.utc(startOfTheDay, "HH:mm"), "second");
+        log.debug("timeslot", "startTime: " + startTimeSecond);
+
+        // Bake StartDate + StartTime = Start DateTime
+        return dayjs.utc(this.start_date).add(startTimeSecond, "second");
+    }
+
+    /**
+     * Get the duraction of maintenance in seconds
+     * @returns {number} Duration of maintenance
+     */
+    getDuration() {
+        let duration = dayjs.utc(this.end_time, "HH:mm").diff(dayjs.utc(this.start_time, "HH:mm"), "second");
+        // Add 24hours if it is across day
+        if (duration < 0) {
+            duration += 24 * 3600;
+        }
+        return duration;
+    }
+
+    /**
+     * Convert data from socket to bean
+     * @param {Bean} bean Bean to fill in
+     * @param {Object} obj Data to fill bean with
+     * @returns {Bean} Filled bean
+     */
+    static jsonToBean(bean, obj) {
+        if (obj.id) {
+            bean.id = obj.id;
+        }
+
+        // Apply timezone offset to timeRange, as it cannot apply automatically.
+        if (obj.timeRange[0]) {
+            timeObjectToUTC(obj.timeRange[0]);
+            if (obj.timeRange[1]) {
+                timeObjectToUTC(obj.timeRange[1]);
+            }
+        }
+
+        bean.title = obj.title;
+        bean.description = obj.description;
+        bean.strategy = obj.strategy;
+        bean.interval_day = obj.intervalDay;
+        bean.active = obj.active;
+
+        if (obj.dateRange[0]) {
+            bean.start_date = localToUTC(obj.dateRange[0]);
+
+            if (obj.dateRange[1]) {
+                bean.end_date = localToUTC(obj.dateRange[1]);
+            }
+        }
+
+        bean.start_time = parseTimeFromTimeObject(obj.timeRange[0]);
+        bean.end_time = parseTimeFromTimeObject(obj.timeRange[1]);
+
+        bean.weekdays = JSON.stringify(obj.weekdays);
+        bean.days_of_month = JSON.stringify(obj.daysOfMonth);
+
+        return bean;
+    }
+
+    /**
+     * SQL conditions for active maintenance
+     * @returns {string}
+     */
+    static getActiveMaintenanceSQLCondition() {
+        return `
+            (
+                (maintenance_timeslot.start_date <= DATETIME('now')
+                AND maintenance_timeslot.end_date >= DATETIME('now')
+                AND maintenance.active = 1)
+                OR
+                (maintenance.strategy = 'manual' AND active = 1)
+            )
+        `;
+    }
+
+    /**
+     * SQL conditions for active and future maintenance
+     * @returns {string}
+     */
+    static getActiveAndFutureMaintenanceSQLCondition() {
+        return `
+            (
+                ((maintenance_timeslot.end_date >= DATETIME('now')
+                AND maintenance.active = 1)
+                OR
+                (maintenance.strategy = 'manual' AND active = 1))
+            )
+        `;
+    }
+}
+
+module.exports = Maintenance;
--- a/server/model/maintenance_timeslot.js
+++ b/server/model/maintenance_timeslot.js
@ -0,0 +1,198 @@
+const { BeanModel } = require("redbean-node/dist/bean-model");
+const { R } = require("redbean-node");
+const dayjs = require("dayjs");
+const { log, utcToLocal, SQL_DATETIME_FORMAT_WITHOUT_SECOND, localToUTC } = require("../../src/util");
+const { UptimeKumaServer } = require("../uptime-kuma-server");
+
+class MaintenanceTimeslot extends BeanModel {
+
+    /**
+     * Return an object that ready to parse to JSON for public
+     * Only show necessary data to public
+     * @returns {Object}
+     */
+    async toPublicJSON() {
+        const serverTimezoneOffset = UptimeKumaServer.getInstance().getTimezoneOffset();
+
+        const obj = {
+            id: this.id,
+            startDate: this.start_date,
+            endDate: this.end_date,
+            startDateServerTimezone: utcToLocal(this.start_date, SQL_DATETIME_FORMAT_WITHOUT_SECOND),
+            endDateServerTimezone: utcToLocal(this.end_date, SQL_DATETIME_FORMAT_WITHOUT_SECOND),
+            serverTimezoneOffset,
+        };
+
+        return obj;
+    }
+
+    /**
+     * Return an object that ready to parse to JSON
+     * @returns {Object}
+     */
+    async toJSON() {
+        return await this.toPublicJSON();
+    }
+
+    /**
+     * @param {Maintenance} maintenance
+     * @param {dayjs} minDate (For recurring type only) Generate a next timeslot from this date.
+     * @param {boolean} removeExist Remove existing timeslot before create
+     * @returns {Promise<MaintenanceTimeslot>}
+     */
+    static async generateTimeslot(maintenance, minDate = null, removeExist = false) {
+        if (removeExist) {
+            await R.exec("DELETE FROM maintenance_timeslot WHERE maintenance_id = ? ", [
+                maintenance.id
+            ]);
+        }
+
+        if (maintenance.strategy === "manual") {
+            log.debug("maintenance", "No need to generate timeslot for manual type");
+
+        } else if (maintenance.strategy === "single") {
+            let bean = R.dispense("maintenance_timeslot");
+            bean.maintenance_id = maintenance.id;
+            bean.start_date = maintenance.start_date;
+            bean.end_date = maintenance.end_date;
+            bean.generated_next = true;
+            return await R.store(bean);
+
+        } else if (maintenance.strategy === "recurring-interval") {
+            // Prevent dead loop, in case interval_day is not set
+            if (!maintenance.interval_day || maintenance.interval_day <= 0) {
+                maintenance.interval_day = 1;
+            }
+
+            return await this.handleRecurringType(maintenance, minDate, (startDateTime) => {
+                return startDateTime.add(maintenance.interval_day, "day");
+            }, () => {
+                return true;
+            });
+
+        } else if (maintenance.strategy === "recurring-weekday") {
+            let dayOfWeekList = maintenance.getDayOfWeekList();
+            log.debug("timeslot", dayOfWeekList);
+
+            if (dayOfWeekList.length <= 0) {
+                log.debug("timeslot", "No weekdays selected?");
+                return null;
+            }
+
+            const isValid = (startDateTime) => {
+                log.debug("timeslot", "nextDateTime: " + startDateTime);
+
+                let day = startDateTime.local().day();
+                log.debug("timeslot", "nextDateTime.day(): " + day);
+
+                return dayOfWeekList.includes(day);
+            };
+
+            return await this.handleRecurringType(maintenance, minDate, (startDateTime) => {
+                while (true) {
+                    startDateTime = startDateTime.add(1, "day");
+
+                    if (isValid(startDateTime)) {
+                        return startDateTime;
+                    }
+                }
+            }, isValid);
+
+        } else if (maintenance.strategy === "recurring-day-of-month") {
+            let dayOfMonthList = maintenance.getDayOfMonthList();
+            if (dayOfMonthList.length <= 0) {
+                log.debug("timeslot", "No day selected?");
+                return null;
+            }
+
+            const isValid = (startDateTime) => {
+                let day = parseInt(startDateTime.local().format("D"));
+
+                log.debug("timeslot", "day: " + day);
+
+                // Check 1-31
+                if (dayOfMonthList.includes(day)) {
+                    return startDateTime;
+                }
+
+                // Check "lastDay1","lastDay2"...
+                let daysInMonth = startDateTime.daysInMonth();
+                let lastDayList = [];
+
+                // Small first, e.g. 28 > 29 > 30 > 31
+                for (let i = 4; i >= 1; i--) {
+                    if (dayOfMonthList.includes("lastDay" + i)) {
+                        lastDayList.push(daysInMonth - i + 1);
+                    }
+                }
+                log.debug("timeslot", lastDayList);
+                return lastDayList.includes(day);
+            };
+
+            return await this.handleRecurringType(maintenance, minDate, (startDateTime) => {
+                while (true) {
+                    startDateTime = startDateTime.add(1, "day");
+                    if (isValid(startDateTime)) {
+                        return startDateTime;
+                    }
+                }
+            }, isValid);
+        } else {
+            throw new Error("Unknown maintenance strategy");
+        }
+    }
+
+    /**
+     * Generate a next timeslot for all recurring types
+     * @param maintenance
+     * @param minDate
+     * @param {function} nextDayCallback The logic how to get the next possible day
+     * @param {function} isValidCallback Check the day whether is matched the current strategy
+     * @returns {Promise<null|MaintenanceTimeslot>}
+     */
+    static async handleRecurringType(maintenance, minDate, nextDayCallback, isValidCallback) {
+        let bean = R.dispense("maintenance_timeslot");
+
+        let duration = maintenance.getDuration();
+        let startDateTime = maintenance.getStartDateTime();
+        let endDateTime;
+
+        // Keep generating from the first possible date, until it is ok
+        while (true) {
+            log.debug("timeslot", "startDateTime: " + startDateTime.format());
+
+            // Handling out of effective date range
+            if (startDateTime.diff(dayjs.utc(maintenance.end_date)) > 0) {
+                log.debug("timeslot", "Out of effective date range");
+                return null;
+            }
+
+            endDateTime = startDateTime.add(duration, "second");
+
+            // If endDateTime is out of effective date range, use the end datetime from effective date range
+            if (endDateTime.diff(dayjs.utc(maintenance.end_date)) > 0) {
+                endDateTime = dayjs.utc(maintenance.end_date);
+            }
+
+            // If minDate is set, the endDateTime must be bigger than it.
+            // And the endDateTime must be bigger current time
+            // Is valid under current recurring strategy
+            if (
+                (!minDate || endDateTime.diff(minDate) > 0) &&
+                endDateTime.diff(dayjs()) > 0 &&
+                isValidCallback(startDateTime)
+            ) {
+                break;
+            }
+            startDateTime = nextDayCallback(startDateTime);
+        }
+
+        bean.maintenance_id = maintenance.id;
+        bean.start_date = localToUTC(startDateTime);
+        bean.end_date = localToUTC(endDateTime);
+        bean.generated_next = false;
+        return await R.store(bean);
+    }
+}
+
+module.exports = MaintenanceTimeslot;
--- a/server/model/monitor.js
+++ b/server/model/monitor.js
@ -1,13 +1,11 @@
 const https = require("https");
 const dayjs = require("dayjs");
-const utc = require("dayjs/plugin/utc");
-let timezone = require("dayjs/plugin/timezone");
-dayjs.extend(utc);
-dayjs.extend(timezone);
 const axios = require("axios");
 const { Prometheus } = require("../prometheus");
-const { log, UP, DOWN, PENDING, flipStatus, TimeLogger } = require("../../src/util");
-const { tcping, ping, dnsResolve, checkCertificate, checkStatusCode, getTotalClientInRoom, setting, mssqlQuery, mqttAsync, setSetting, httpNtlm } = require("../util-server");
+const { log, UP, DOWN, PENDING, MAINTENANCE, flipStatus, TimeLogger, MAX_INTERVAL_SECOND, MIN_INTERVAL_SECOND } = require("../../src/util");
+const { tcping, ping, dnsResolve, checkCertificate, checkStatusCode, getTotalClientInRoom, setting, mssqlQuery, postgresQuery, mysqlQuery, mqttAsync, setSetting, httpNtlm, radius, grpcQuery,
+    redisPingAsync, mongodbPing,
+} = require("../util-server");
 const { R } = require("redbean-node");
 const { BeanModel } = require("redbean-node/dist/bean-model");
 const { Notification } = require("../notification");
@ -16,18 +14,17 @@ const { demoMode } = require("../config");
 const version = require("../../package.json").version;
 const apicache = require("../modules/apicache");
 const { UptimeKumaServer } = require("../uptime-kuma-server");
-
-const axiosCachedDnsResolve = require("esm-wallaby")(module)("axios-cached-dns-resolve");
-
-// create an axios client instance with the cached DNS resolve interceptor
-const axiosClient = axios.create();
-axiosCachedDnsResolve.registerInterceptor(axiosClient);
+const { CacheableDnsHttpAgent } = require("../cacheable-dns-http-agent");
+const { DockerHost } = require("../docker");
+const Maintenance = require("./maintenance");
+const { UptimeCacheList } = require("../uptime-cache-list");

 /**
 * status:
 *      0 = DOWN
 *      1 = UP
 *      2 = PENDING
+ *      3 = MAINTENANCE
 */
 class Monitor extends BeanModel {

@ -40,7 +37,13 @@ class Monitor extends BeanModel {
        let obj = {
            id: this.id,
            name: this.name,
+            sendUrl: this.sendUrl,
        };
+
+        if (this.sendUrl) {
+            obj.url = this.url;
+        }
+
        if (showTags) {
            obj.tags = await this.getTags();
        }
@ -78,6 +81,7 @@ class Monitor extends BeanModel {
            type: this.type,
            interval: this.interval,
            retryInterval: this.retryInterval,
+            resendInterval: this.resendInterval,
            keyword: this.keyword,
            expiryNotification: this.isEnabledExpiryNotification(),
            ignoreTls: this.getIgnoreTls(),
@ -87,18 +91,23 @@ class Monitor extends BeanModel {
            dns_resolve_type: this.dns_resolve_type,
            dns_resolve_server: this.dns_resolve_server,
            dns_last_result: this.dns_last_result,
+            docker_container: this.docker_container,
+            docker_host: this.docker_host,
            proxyId: this.proxy_id,
            notificationIDList,
            tags: tags,
-            mqttUsername: this.mqttUsername,
-            mqttPassword: this.mqttPassword,
+            maintenance: await Monitor.isUnderMaintenance(this.id),
            mqttTopic: this.mqttTopic,
            mqttSuccessMessage: this.mqttSuccessMessage,
-            databaseConnectionString: this.databaseConnectionString,
            databaseQuery: this.databaseQuery,
            authMethod: this.authMethod,
-            authWorkstation: this.authWorkstation,
-            authDomain: this.authDomain,
+            grpcUrl: this.grpcUrl,
+            grpcProtobuf: this.grpcProtobuf,
+            grpcMethod: this.grpcMethod,
+            grpcServiceName: this.grpcServiceName,
+            grpcEnableTls: this.getGrpcEnableTls(),
+            radiusCalledStationId: this.radiusCalledStationId,
+            radiusCallingStationId: this.radiusCallingStationId,
        };

        if (includeSensitiveData) {
@ -106,12 +115,23 @@ class Monitor extends BeanModel {
                ...data,
                headers: this.headers,
                body: this.body,
+                grpcBody: this.grpcBody,
+                grpcMetadata: this.grpcMetadata,
                basic_auth_user: this.basic_auth_user,
                basic_auth_pass: this.basic_auth_pass,
                pushToken: this.pushToken,
+                databaseConnectionString: this.databaseConnectionString,
+                radiusUsername: this.radiusUsername,
+                radiusPassword: this.radiusPassword,
+                radiusSecret: this.radiusSecret,
+                mqttUsername: this.mqttUsername,
+                mqttPassword: this.mqttPassword,
+                authWorkstation: this.authWorkstation,
+                authDomain: this.authDomain,
            };
        }

+        data.includeSensitiveData = includeSensitiveData;
        return data;
    }

@ -156,6 +176,14 @@ class Monitor extends BeanModel {
        return Boolean(this.upsideDown);
    }

+    /**
+     * Parse to boolean
+     * @returns {boolean}
+     */
+    getGrpcEnableTls() {
+        return Boolean(this.grpcEnableTls);
+    }
+
    /**
     * Get accepted status codes
     * @returns {Object}
@ -205,6 +233,7 @@ class Monitor extends BeanModel {
            bean.monitor_id = this.id;
            bean.time = R.isoDateTimeMillis(dayjs.utc());
            bean.status = DOWN;
+            bean.downCount = previousBeat?.downCount || 0;

            if (this.isUpsideDown()) {
                bean.status = flipStatus(bean.status);
@ -218,7 +247,10 @@ class Monitor extends BeanModel {
            }

            try {
-                if (this.type === "http" || this.type === "keyword") {
+                if (await Monitor.isUnderMaintenance(this.id)) {
+                    bean.msg = "Monitor under maintenance";
+                    bean.status = MAINTENANCE;
+                } else if (this.type === "http" || this.type === "keyword") {
                    // Do not do any queries/high loading things before the "bean.ping"
                    let startTime = dayjs().valueOf();

@ -237,6 +269,7 @@ class Monitor extends BeanModel {

                    log.debug("monitor", `[${this.name}] Prepare Options for axios`);

+                    // Axios Options
                    const options = {
                        url: this.url,
                        method: (this.method || "get").toLowerCase(),
@ -275,20 +308,8 @@ class Monitor extends BeanModel {
                    log.debug("monitor", `[${this.name}] Axios Options: ${JSON.stringify(options)}`);
                    log.debug("monitor", `[${this.name}] Axios Request`);

-                    let res;
-                    if (this.auth_method === "ntlm") {
-                        options.httpsAgent.keepAlive = true;
-
-                        res = await httpNtlm(options, {
-                            username: this.basic_auth_user,
-                            password: this.basic_auth_pass,
-                            domain: this.authDomain,
-                            workstation: this.authWorkstation ? this.authWorkstation : undefined
-                        });
-
-                    } else {
-                        res = await axiosClient.request(options);
-                    }
+                    // Make Request
+                    let res = await this.makeAxiosRequest(options);

                    bean.msg = `${res.status} - ${res.statusText}`;
                    bean.ping = dayjs().valueOf() - startTime;
@ -434,16 +455,19 @@ class Monitor extends BeanModel {
                        throw new Error("Steam API Key not found");
                    }

-                    let res = await axiosClient.get(steamApiUrl, {
+                    let res = await axios.get(steamApiUrl, {
                        timeout: this.interval * 1000 * 0.8,
                        headers: {
                            "Accept": "*/*",
                            "User-Agent": "Uptime-Kuma/" + version,
                        },
-                        httpsAgent: new https.Agent({
+                        httpsAgent: CacheableDnsHttpAgent.getHttpsAgent({
                            maxCachedSessions: 0,      // Use Custom agent to disable session reuse (https://github.com/nodejs/node/issues/3940)
                            rejectUnauthorized: !this.getIgnoreTls(),
                        }),
+                        httpAgent: CacheableDnsHttpAgent.getHttpAgent({
+                            maxCachedSessions: 0,
+                        }),
                        maxRedirects: this.maxredirects,
                        validateStatus: (status) => {
                            return checkStatusCode(status, this.getAcceptedStatuscodes());
@ -464,6 +488,41 @@ class Monitor extends BeanModel {
                    } else {
                        throw new Error("Server not found on Steam");
                    }
+                } else if (this.type === "docker") {
+                    log.debug(`[${this.name}] Prepare Options for Axios`);
+
+                    const dockerHost = await R.load("docker_host", this.docker_host);
+
+                    const options = {
+                        url: `/containers/${this.docker_container}/json`,
+                        timeout: this.interval * 1000 * 0.8,
+                        headers: {
+                            "Accept": "*/*",
+                            "User-Agent": "Uptime-Kuma/" + version,
+                        },
+                        httpsAgent: CacheableDnsHttpAgent.getHttpsAgent({
+                            maxCachedSessions: 0,      // Use Custom agent to disable session reuse (https://github.com/nodejs/node/issues/3940)
+                            rejectUnauthorized: !this.getIgnoreTls(),
+                        }),
+                        httpAgent: CacheableDnsHttpAgent.getHttpAgent({
+                            maxCachedSessions: 0,
+                        }),
+                    };
+
+                    if (dockerHost._dockerType === "socket") {
+                        options.socketPath = dockerHost._dockerDaemon;
+                    } else if (dockerHost._dockerType === "tcp") {
+                        options.baseURL = DockerHost.patchDockerURL(dockerHost._dockerDaemon);
+                    }
+
+                    log.debug(`[${this.name}] Axios Request`);
+                    let res = await axios.request(options);
+                    if (res.data.State.Running) {
+                        bean.status = UP;
+                        bean.msg = res.data.State.Status;
+                    } else {
+                        throw Error("Container State is " + res.data.State.Status);
+                    }
                } else if (this.type === "mqtt") {
                    bean.msg = await mqttAsync(this.hostname, this.mqttTopic, this.mqttSuccessMessage, {
                        port: this.port,
@ -480,6 +539,104 @@ class Monitor extends BeanModel {
                    bean.msg = "";
                    bean.status = UP;
                    bean.ping = dayjs().valueOf() - startTime;
+                } else if (this.type === "grpc-keyword") {
+                    let startTime = dayjs().valueOf();
+                    const options = {
+                        grpcUrl: this.grpcUrl,
+                        grpcProtobufData: this.grpcProtobuf,
+                        grpcServiceName: this.grpcServiceName,
+                        grpcEnableTls: this.grpcEnableTls,
+                        grpcMethod: this.grpcMethod,
+                        grpcBody: this.grpcBody,
+                        keyword: this.keyword
+                    };
+                    const response = await grpcQuery(options);
+                    bean.ping = dayjs().valueOf() - startTime;
+                    log.debug("monitor:", `gRPC response: ${JSON.stringify(response)}`);
+                    let responseData = response.data;
+                    if (responseData.length > 50) {
+                        responseData = responseData.toString().substring(0, 47) + "...";
+                    }
+                    if (response.code !== 1) {
+                        bean.status = DOWN;
+                        bean.msg = `Error in send gRPC ${response.code} ${response.errorMessage}`;
+                    } else {
+                        if (response.data.toString().includes(this.keyword)) {
+                            bean.status = UP;
+                            bean.msg = `${responseData}, keyword [${this.keyword}] is found`;
+                        } else {
+                            log.debug("monitor:", `GRPC response [${response.data}] + ", but keyword [${this.keyword}] is not in [" + ${response.data} + "]"`);
+                            bean.status = DOWN;
+                            bean.msg = `, but keyword [${this.keyword}] is not in [" + ${responseData} + "]`;
+                        }
+                    }
+                } else if (this.type === "postgres") {
+                    let startTime = dayjs().valueOf();
+
+                    await postgresQuery(this.databaseConnectionString, this.databaseQuery);
+
+                    bean.msg = "";
+                    bean.status = UP;
+                    bean.ping = dayjs().valueOf() - startTime;
+                } else if (this.type === "mysql") {
+                    let startTime = dayjs().valueOf();
+
+                    await mysqlQuery(this.databaseConnectionString, this.databaseQuery);
+
+                    bean.msg = "";
+                    bean.status = UP;
+                    bean.ping = dayjs().valueOf() - startTime;
+                } else if (this.type === "mongodb") {
+                    let startTime = dayjs().valueOf();
+
+                    await mongodbPing(this.databaseConnectionString);
+
+                    bean.msg = "";
+                    bean.status = UP;
+                    bean.ping = dayjs().valueOf() - startTime;
+
+                } else if (this.type === "radius") {
+                    let startTime = dayjs().valueOf();
+
+                    // Handle monitors that were created before the
+                    // update and as such don't have a value for
+                    // this.port.
+                    let port;
+                    if (this.port == null) {
+                        port = 1812;
+                    } else {
+                        port = this.port;
+                    }
+
+                    try {
+                        const resp = await radius(
+                            this.hostname,
+                            this.radiusUsername,
+                            this.radiusPassword,
+                            this.radiusCalledStationId,
+                            this.radiusCallingStationId,
+                            this.radiusSecret,
+                            port
+                        );
+                        if (resp.code) {
+                            bean.msg = resp.code;
+                        }
+                        bean.status = UP;
+                    } catch (error) {
+                        bean.status = DOWN;
+                        if (error.response?.code) {
+                            bean.msg = error.response.code;
+                        } else {
+                            bean.msg = error.message;
+                        }
+                    }
+                    bean.ping = dayjs().valueOf() - startTime;
+                } else if (this.type === "redis") {
+                    let startTime = dayjs().valueOf();
+
+                    bean.msg = await redisPingAsync(this.databaseConnectionString);
+                    bean.status = UP;
+                    bean.ping = dayjs().valueOf() - startTime;
                } else {
                    bean.msg = "Unknown Monitor Type";
                    bean.status = PENDING;
@ -518,15 +675,36 @@ class Monitor extends BeanModel {
            if (isImportant) {
                bean.important = true;

-                log.debug("monitor", `[${this.name}] sendNotification`);
-                await Monitor.sendNotification(isFirstBeat, this, bean);
+                if (Monitor.isImportantForNotification(isFirstBeat, previousBeat?.status, bean.status)) {
+                    log.debug("monitor", `[${this.name}] sendNotification`);
+                    await Monitor.sendNotification(isFirstBeat, this, bean);
+                } else {
+                    log.debug("monitor", `[${this.name}] will not sendNotification because it is (or was) under maintenance`);
+                }
+
+                // Reset down count
+                bean.downCount = 0;

                // Clear Status Page Cache
                log.debug("monitor", `[${this.name}] apicache clear`);
                apicache.clear();

+                UptimeKumaServer.getInstance().sendMaintenanceListByUserID(this.user_id);
+
            } else {
                bean.important = false;
+
+                if (bean.status === DOWN && this.resendInterval > 0) {
+                    ++bean.downCount;
+                    if (bean.downCount >= this.resendInterval) {
+                        // Send notification again, because we are still DOWN
+                        log.debug("monitor", `[${this.name}] sendNotification again: Down Count: ${bean.downCount} | Resend Interval: ${this.resendInterval}`);
+                        await Monitor.sendNotification(isFirstBeat, this, bean);
+
+                        // Reset down count
+                        bean.downCount = 0;
+                    }
+                }
            }

            if (bean.status === UP) {
@ -536,11 +714,14 @@ class Monitor extends BeanModel {
                    beatInterval = this.retryInterval;
                }
                log.warn("monitor", `Monitor #${this.id} '${this.name}': Pending: ${bean.msg} | Max retries: ${this.maxretries} | Retry: ${retries} | Retry Interval: ${beatInterval} seconds | Type: ${this.type}`);
+            } else if (bean.status === MAINTENANCE) {
+                log.warn("monitor", `Monitor #${this.id} '${this.name}': Under Maintenance | Type: ${this.type}`);
            } else {
-                log.warn("monitor", `Monitor #${this.id} '${this.name}': Failing: ${bean.msg} | Interval: ${beatInterval} seconds | Type: ${this.type}`);
+                log.warn("monitor", `Monitor #${this.id} '${this.name}': Failing: ${bean.msg} | Interval: ${beatInterval} seconds | Type: ${this.type} | Down Count: ${bean.downCount} | Resend Interval: ${this.resendInterval}`);
            }

            log.debug("monitor", `[${this.name}] Send to socket`);
+            UptimeCacheList.clearCache(this.id);
            io.to(this.user_id).emit("heartbeat", bean.toJSON());
            Monitor.sendStats(io, this.id, this.user_id);

@ -587,6 +768,47 @@ class Monitor extends BeanModel {
        }
    }

+    /**
+     * Make a request using axios
+     * @param {Object} options Options for Axios
+     * @param {boolean} finalCall Should this be the final call i.e
+     * don't retry on faliure
+     * @returns {Object} Axios response
+     */
+    async makeAxiosRequest(options, finalCall = false) {
+        try {
+            let res;
+            if (this.auth_method === "ntlm") {
+                options.httpsAgent.keepAlive = true;
+
+                res = await httpNtlm(options, {
+                    username: this.basic_auth_user,
+                    password: this.basic_auth_pass,
+                    domain: this.authDomain,
+                    workstation: this.authWorkstation ? this.authWorkstation : undefined
+                });
+
+            } else {
+                res = await axios.request(options);
+            }
+
+            return res;
+        } catch (e) {
+            // Fix #2253
+            // Read more: https://stackoverflow.com/questions/1759956/curl-error-18-transfer-closed-with-outstanding-read-data-remaining
+            if (!finalCall && typeof e.message === "string" && e.message.includes("maxContentLength size of -1 exceeded")) {
+                log.debug("monitor", "makeAxiosRequest with gzip");
+                options.headers["Accept-Encoding"] = "gzip, deflate";
+                return this.makeAxiosRequest(options, true);
+            } else {
+                if (typeof e.message === "string" && e.message.includes("maxContentLength size of -1 exceeded")) {
+                    e.message = "response timeout: incomplete response within a interval";
+                }
+                throw e;
+            }
+        }
+    }
+
    /** Stop monitor */
    stop() {
        clearTimeout(this.heartbeatInterval);
@ -725,7 +947,15 @@ class Monitor extends BeanModel {
     * @param {number} duration Hours
     * @param {number} monitorID ID of monitor to calculate
     */
-    static async calcUptime(duration, monitorID) {
+    static async calcUptime(duration, monitorID, forceNoCache = false) {
+
+        if (!forceNoCache) {
+            let cachedUptime = UptimeCacheList.getUptime(monitorID, duration);
+            if (cachedUptime != null) {
+                return cachedUptime;
+            }
+        }
+
        const timeLogger = new TimeLogger();

        const startTime = R.isoDateTime(dayjs.utc().subtract(duration, "hour"));
@ -746,7 +976,7 @@ class Monitor extends BeanModel {
               -- SUM all uptime duration, also trim off the beat out of time window
                SUM(
                    CASE
-                        WHEN (status = 1)
+                        WHEN (status = 1 OR status = 3)
                        THEN
                            CASE
                                WHEN (JULIANDAY(\`time\`) - JULIANDAY(?)) * 86400 < duration
@ -784,6 +1014,9 @@ class Monitor extends BeanModel {
            }
        }

+        // Cache
+        UptimeCacheList.addUptime(monitorID, duration, uptime);
+
        return uptime;
    }

@ -817,11 +1050,49 @@ class Monitor extends BeanModel {
        // DOWN -> PENDING = this case not exists
        // DOWN -> DOWN = not important
        // * DOWN -> UP = important
-        let isImportant = isFirstBeat ||
+        // MAINTENANCE -> MAINTENANCE = not important
+        // * MAINTENANCE -> UP = important
+        // * MAINTENANCE -> DOWN = important
+        // * DOWN -> MAINTENANCE = important
+        // * UP -> MAINTENANCE = important
+        return isFirstBeat ||
+            (previousBeatStatus === DOWN && currentBeatStatus === MAINTENANCE) ||
+            (previousBeatStatus === UP && currentBeatStatus === MAINTENANCE) ||
+            (previousBeatStatus === MAINTENANCE && currentBeatStatus === DOWN) ||
+            (previousBeatStatus === MAINTENANCE && currentBeatStatus === UP) ||
+            (previousBeatStatus === UP && currentBeatStatus === DOWN) ||
+            (previousBeatStatus === DOWN && currentBeatStatus === UP) ||
+            (previousBeatStatus === PENDING && currentBeatStatus === DOWN);
+    }
+
+    /**
+     * Is this beat important for notifications?
+     * @param {boolean} isFirstBeat Is this the first beat of this monitor?
+     * @param {const} previousBeatStatus Status of the previous beat
+     * @param {const} currentBeatStatus Status of the current beat
+     * @returns {boolean} True if is an important beat else false
+     */
+    static isImportantForNotification(isFirstBeat, previousBeatStatus, currentBeatStatus) {
+        // * ? -> ANY STATUS = important [isFirstBeat]
+        // UP -> PENDING = not important
+        // * UP -> DOWN = important
+        // UP -> UP = not important
+        // PENDING -> PENDING = not important
+        // * PENDING -> DOWN = important
+        // PENDING -> UP = not important
+        // DOWN -> PENDING = this case not exists
+        // DOWN -> DOWN = not important
+        // * DOWN -> UP = important
+        // MAINTENANCE -> MAINTENANCE = not important
+        // MAINTENANCE -> UP = not important
+        // * MAINTENANCE -> DOWN = important
+        // DOWN -> MAINTENANCE = not important
+        // UP -> MAINTENANCE = not important
+        return isFirstBeat ||
+            (previousBeatStatus === MAINTENANCE && currentBeatStatus === DOWN) ||
            (previousBeatStatus === UP && currentBeatStatus === DOWN) ||
            (previousBeatStatus === DOWN && currentBeatStatus === UP) ||
            (previousBeatStatus === PENDING && currentBeatStatus === DOWN);
-        return isImportant;
    }

    /**
@ -845,7 +1116,13 @@ class Monitor extends BeanModel {

            for (let notification of notificationList) {
                try {
-                    await Notification.send(JSON.parse(notification.config), msg, await monitor.toJSON(false), bean.toJSON());
+                    // Prevent if the msg is undefined, notifications such as Discord cannot send out.
+                    const heartbeatJSON = bean.toJSON();
+                    if (!heartbeatJSON["msg"]) {
+                        heartbeatJSON["msg"] = "N/A";
+                    }
+
+                    await Notification.send(JSON.parse(notification.config), msg, await monitor.toJSON(false), heartbeatJSON);
                } catch (e) {
                    log.error("monitor", "Cannot send notification to " + notification.name);
                    log.error("monitor", e);
@ -958,6 +1235,36 @@ class Monitor extends BeanModel {
            monitorID
        ]);
    }
+
+    /**
+     * Check if monitor is under maintenance
+     * @param {number} monitorID ID of monitor to check
+     * @returns {Promise<boolean>}
+     */
+    static async isUnderMaintenance(monitorID) {
+        let activeCondition = Maintenance.getActiveMaintenanceSQLCondition();
+        const maintenance = await R.getRow(`
+            SELECT COUNT(*) AS count
+            FROM monitor_maintenance mm
+            JOIN maintenance
+                ON mm.maintenance_id = maintenance.id
+                AND mm.monitor_id = ?
+            LEFT JOIN maintenance_timeslot
+                ON maintenance_timeslot.maintenance_id = maintenance.id
+            WHERE ${activeCondition}
+            LIMIT 1`, [ monitorID ]);
+        return maintenance.count !== 0;
+    }
+
+    /** Make sure monitor interval is between bounds */
+    validate() {
+        if (this.interval > MAX_INTERVAL_SECOND) {
+            throw new Error(`Interval cannot be more than ${MAX_INTERVAL_SECOND} seconds`);
+        }
+        if (this.interval < MIN_INTERVAL_SECOND) {
+            throw new Error(`Interval cannot be less than ${MIN_INTERVAL_SECOND} seconds`);
+        }
+    }
 }

 module.exports = Monitor;
--- a/server/model/status_page.js
+++ b/server/model/status_page.js
@ -2,6 +2,8 @@ const { BeanModel } = require("redbean-node/dist/bean-model");
 const { R } = require("redbean-node");
 const cheerio = require("cheerio");
 const { UptimeKumaServer } = require("../uptime-kuma-server");
+const jsesc = require("jsesc");
+const Maintenance = require("./maintenance");

 class StatusPage extends BeanModel {

@ -36,7 +38,7 @@ class StatusPage extends BeanModel {
     */
    static async renderHTML(indexHTML, statusPage) {
        const $ = cheerio.load(indexHTML);
-        const description155 = statusPage.description?.substring(0, 155);
+        const description155 = statusPage.description?.substring(0, 155) ?? "";

        $("title").text(statusPage.title);
        $("meta[name=description]").attr("content", description155);
@ -45,6 +47,8 @@ class StatusPage extends BeanModel {
            $("link[rel=icon]")
                .attr("href", statusPage.icon)
                .removeAttr("type");
+
+            $("link[rel=apple-touch-icon]").remove();
        }

        const head = $("head");
@ -54,13 +58,22 @@ class StatusPage extends BeanModel {
        head.append(`<meta property="og:description" content="${description155}" />`);

        // Preload data
-        const json = JSON.stringify(await StatusPage.getStatusPageData(statusPage));
-        head.append(`
-            <script>
-                window.preloadData = ${json}
+        // Add jsesc, fix https://github.com/louislam/uptime-kuma/issues/2186
+        const escapedJSONObject = jsesc(await StatusPage.getStatusPageData(statusPage), {
+            "isScriptContext": true
+        });
+
+        const script = $(`
+            <script id="preload-data" data-json="{}">
+                window.preloadData = ${escapedJSONObject};
            </script>
        `);

+        head.append(script);
+
+        // manifest.json
+        $("link[rel=manifest]").attr("href", `/api/status-page/${statusPage.slug}/manifest.json`);
+
        return $.root().html();
    }

@ -78,6 +91,8 @@ class StatusPage extends BeanModel {
            incident = incident.toPublicJSON();
        }

+        let maintenanceList = await StatusPage.getMaintenanceList(statusPage.id);
+
        // Public Group List
        const publicGroupList = [];
        const showTags = !!statusPage.show_tags;
@ -95,7 +110,8 @@ class StatusPage extends BeanModel {
        return {
            config: await statusPage.toPublicJSON(),
            incident,
-            publicGroupList
+            publicGroupList,
+            maintenanceList,
        };
    }

@ -254,6 +270,38 @@ class StatusPage extends BeanModel {
        }
    }

+    /**
+     * Get list of maintenances
+     * @param {number} statusPageId ID of status page to get maintenance for
+     * @returns {Object} Object representing maintenances sanitized for public
+     */
+    static async getMaintenanceList(statusPageId) {
+        try {
+            const publicMaintenanceList = [];
+
+            let activeCondition = Maintenance.getActiveMaintenanceSQLCondition();
+            let maintenanceBeanList = R.convertToBeans("maintenance", await R.getAll(`
+                SELECT DISTINCT maintenance.*
+                FROM maintenance
+                JOIN maintenance_status_page
+                    ON maintenance_status_page.maintenance_id = maintenance.id
+                    AND maintenance_status_page.status_page_id = ?
+                LEFT JOIN maintenance_timeslot
+                    ON maintenance_timeslot.maintenance_id = maintenance.id
+                WHERE ${activeCondition}
+                ORDER BY maintenance.end_date
+            `, [ statusPageId ]));
+
+            for (const bean of maintenanceBeanList) {
+                publicMaintenanceList.push(await bean.toPublicJSON());
+            }
+
+            return publicMaintenanceList;
+
+        } catch (error) {
+            return [];
+        }
+    }
 }

 module.exports = StatusPage;
--- a/server/modules/dayjs/plugin/timezone.d.ts
+++ b/server/modules/dayjs/plugin/timezone.d.ts
@ -0,0 +1,20 @@
+import { PluginFunc, ConfigType } from 'dayjs'
+
+declare const plugin: PluginFunc
+export = plugin
+
+declare module 'dayjs' {
+  interface Dayjs {
+    tz(timezone?: string, keepLocalTime?: boolean): Dayjs
+    offsetName(type?: 'short' | 'long'): string | undefined
+  }
+
+  interface DayjsTimezone {
+    (date: ConfigType, timezone?: string): Dayjs
+    (date: ConfigType, format: string, timezone?: string): Dayjs
+    guess(): string
+    setDefault(timezone?: string): void
+  }
+
+  const tz: DayjsTimezone
+}
--- a/server/modules/dayjs/plugin/timezone.js
+++ b/server/modules/dayjs/plugin/timezone.js
@ -0,0 +1,115 @@
+/**
+ * Copy from node_modules/dayjs/plugin/timezone.js
+ * Try to fix https://github.com/louislam/uptime-kuma/issues/2318
+ * Source: https://github.com/iamkun/dayjs/tree/dev/src/plugin/utc
+ * License: MIT
+ */
+!function (t, e) {
+    // eslint-disable-next-line no-undef
+    typeof exports == "object" && typeof module != "undefined" ? module.exports = e() : typeof define == "function" && define.amd ? define(e) : (t = typeof globalThis != "undefined" ? globalThis : t || self).dayjs_plugin_timezone = e();
+}(this, (function () {
+    "use strict";
+    let t = {
+        year: 0,
+        month: 1,
+        day: 2,
+        hour: 3,
+        minute: 4,
+        second: 5
+    };
+    let e = {};
+    return function (n, i, o) {
+        let r;
+        let a = function (t, n, i) {
+            void 0 === i && (i = {});
+            let o = new Date(t);
+            let r = function (t, n) {
+                void 0 === n && (n = {});
+                let i = n.timeZoneName || "short";
+                let o = t + "|" + i;
+                let r = e[o];
+                return r || (r = new Intl.DateTimeFormat("en-US", {
+                    hour12: !1,
+                    timeZone: t,
+                    year: "numeric",
+                    month: "2-digit",
+                    day: "2-digit",
+                    hour: "2-digit",
+                    minute: "2-digit",
+                    second: "2-digit",
+                    timeZoneName: i
+                }), e[o] = r), r;
+            }(n, i);
+            return r.formatToParts(o);
+        };
+        let u = function (e, n) {
+            let i = a(e, n);
+            let r = [];
+            let u = 0;
+            for (; u < i.length; u += 1) {
+                let f = i[u];
+                let s = f.type;
+                let m = f.value;
+                let c = t[s];
+                c >= 0 && (r[c] = parseInt(m, 10));
+            }
+            let d = r[3];
+            let l = d === 24 ? 0 : d;
+            let v = r[0] + "-" + r[1] + "-" + r[2] + " " + l + ":" + r[4] + ":" + r[5] + ":000";
+            let h = +e;
+            return (o.utc(v).valueOf() - (h -= h % 1e3)) / 6e4;
+        };
+        let f = i.prototype;
+        f.tz = function (t, e) {
+            void 0 === t && (t = r);
+            let n = this.utcOffset();
+            let i = this.toDate();
+            let a = i.toLocaleString("en-US", { timeZone: t }).replace("\u202f", " ");
+            let u = Math.round((i - new Date(a)) / 1e3 / 60);
+            let f = o(a).$set("millisecond", this.$ms).utcOffset(15 * -Math.round(i.getTimezoneOffset() / 15) - u, !0);
+            if (e) {
+                let s = f.utcOffset();
+                f = f.add(n - s, "minute");
+            }
+            return f.$x.$timezone = t, f;
+        }, f.offsetName = function (t) {
+            let e = this.$x.$timezone || o.tz.guess();
+            let n = a(this.valueOf(), e, { timeZoneName: t }).find((function (t) {
+                return t.type.toLowerCase() === "timezonename";
+            }));
+            return n && n.value;
+        };
+        let s = f.startOf;
+        f.startOf = function (t, e) {
+            if (!this.$x || !this.$x.$timezone) {
+                return s.call(this, t, e);
+            }
+            let n = o(this.format("YYYY-MM-DD HH:mm:ss:SSS"));
+            return s.call(n, t, e).tz(this.$x.$timezone, !0);
+        }, o.tz = function (t, e, n) {
+            let i = n && e;
+            let a = n || e || r;
+            let f = u(+o(), a);
+            if (typeof t != "string") {
+                return o(t).tz(a);
+            }
+            let s = function (t, e, n) {
+                let i = t - 60 * e * 1e3;
+                let o = u(i, n);
+                if (e === o) {
+                    return [ i, e ];
+                }
+                let r = u(i -= 60 * (o - e) * 1e3, n);
+                return o === r ? [ i, o ] : [ t - 60 * Math.min(o, r) * 1e3, Math.max(o, r) ];
+            }(o.utc(t, i).valueOf(), f, a);
+            let m = s[0];
+            let c = s[1];
+            let d = o(m).utcOffset(c);
+            return d.$x.$timezone = a, d;
+        }, o.tz.guess = function () {
+            return Intl.DateTimeFormat().resolvedOptions().timeZone;
+        }, o.tz.setDefault = function (t) {
+            r = t;
+        };
+    };
+}));
--- a/server/notification-providers/alertnow.js
+++ b/server/notification-providers/alertnow.js
@ -0,0 +1,50 @@
+const NotificationProvider = require("./notification-provider");
+const axios = require("axios");
+const { setting } = require("../util-server");
+const { getMonitorRelativeURL, UP, DOWN } = require("../../src/util");
+
+class AlertNow extends NotificationProvider {
+
+    name = "AlertNow";
+
+    async send(notification, msg, monitorJSON = null, heartbeatJSON = null) {
+        let okMsg = "Sent Successfully.";
+        try {
+            let textMsg = "";
+            let status = "open";
+            let eventType = "ERROR";
+            let eventId = new Date().toISOString().slice(0, 10).replace(/-/g, "");
+
+            if (heartbeatJSON && heartbeatJSON.status === UP) {
+                textMsg = `[${heartbeatJSON.name}] ✅ Application is back online`;
+                status = "close";
+                eventType = "INFO";
+                eventId += `_${heartbeatJSON.name.replace(/\s/g, "")}`;
+            } else if (heartbeatJSON && heartbeatJSON.status === DOWN) {
+                textMsg = `[${heartbeatJSON.name}] 🔴 Application went down`;
+            }
+
+            textMsg += ` - ${msg}`;
+
+            const baseURL = await setting("primaryBaseURL");
+            if (baseURL && monitorJSON) {
+                textMsg += ` >> ${baseURL + getMonitorRelativeURL(monitorJSON.id)}`;
+            }
+
+            const data = {
+                "summary": textMsg,
+                "status": status,
+                "event_type": eventType,
+                "event_id": eventId,
+            };
+
+            await axios.post(notification.alertNowWebhookURL, data);
+            return okMsg;
+        } catch (error) {
+            this.throwGeneralAxiosError(error);
+        }
+
+    }
+}
+
+module.exports = AlertNow;
--- a/server/notification-providers/bark.js
+++ b/server/notification-providers/bark.js
@ -12,9 +12,7 @@ const { default: axios } = require("axios");

 // bark is an APN bridge that sends notifications to Apple devices.

-const barkNotificationGroup = "UptimeKuma";
 const barkNotificationAvatar = "https://github.com/louislam/uptime-kuma/raw/master/public/icon.png";
-const barkNotificationSound = "telegraph";
 const successMessage = "Successes!";

 class Bark extends NotificationProvider {
@ -30,17 +28,17 @@ class Bark extends NotificationProvider {

        if (msg != null && heartbeatJSON != null && heartbeatJSON["status"] === UP) {
            let title = "UptimeKuma Monitor Up";
-            return await this.postNotification(title, msg, barkEndpoint);
+            return await this.postNotification(notification, title, msg, barkEndpoint);
        }

        if (msg != null && heartbeatJSON != null && heartbeatJSON["status"] === DOWN) {
            let title = "UptimeKuma Monitor Down";
-            return await this.postNotification(title, msg, barkEndpoint);
+            return await this.postNotification(notification, title, msg, barkEndpoint);
        }

        if (msg != null) {
            let title = "UptimeKuma Message";
-            return await this.postNotification(title, msg, barkEndpoint);
+            return await this.postNotification(notification, title, msg, barkEndpoint);
        }
    }

@ -50,13 +48,23 @@ class Bark extends NotificationProvider {
     * @param {string} postUrl URL to append parameters to
     * @returns {string}
     */
-    appendAdditionalParameters(postUrl) {
-        // grouping all our notifications
-        postUrl += "?group=" + barkNotificationGroup;
+    appendAdditionalParameters(notification, postUrl) {
        // set icon to uptime kuma icon, 11kb should be fine
-        postUrl += "&icon=" + barkNotificationAvatar;
+        postUrl += "?icon=" + barkNotificationAvatar;
+        // grouping all our notifications
+        if (notification.barkGroup != null) {
+            postUrl += "&group=" + notification.barkGroup;
+        } else {
+            // default name
+            postUrl += "&group=" + "UptimeKuma";
+        }
        // picked a sound, this should follow system's mute status when arrival
-        postUrl += "&sound=" + barkNotificationSound;
+        if (notification.barkSound != null) {
+            postUrl += "&sound=" + notification.barkSound;
+        } else {
+            // default sound
+            postUrl += "&sound=" + "telegraph";
+        }
        return postUrl;
    }

@ -81,12 +89,12 @@ class Bark extends NotificationProvider {
     * @param {string} endpoint Endpoint to send request to
     * @returns {string}
     */
-    async postNotification(title, subtitle, endpoint) {
+    async postNotification(notification, title, subtitle, endpoint) {
        // url encode title and subtitle
        title = encodeURIComponent(title);
        subtitle = encodeURIComponent(subtitle);
        let postUrl = endpoint + "/" + title + "/" + subtitle;
-        postUrl = this.appendAdditionalParameters(postUrl);
+        postUrl = this.appendAdditionalParameters(notification, postUrl);
        let result = await axios.get(postUrl);
        this.checkResult(result);
        if (result.statusText != null) {
--- a/server/notification-providers/discord.js
+++ b/server/notification-providers/discord.js
@ -64,7 +64,7 @@ class Discord extends NotificationProvider {
                            },
                            {
                                name: "Error",
-                                value: heartbeatJSON["msg"],
+                                value: heartbeatJSON["msg"] == null ? "N/A" : heartbeatJSON["msg"],
                            },
                        ],
                    }],
@ -91,7 +91,7 @@ class Discord extends NotificationProvider {
                            },
                            {
                                name: monitorJSON["type"] === "push" ? "Service Type" : "Service URL",
-                                value: monitorJSON["type"] === "push" ? "Heartbeat" : address.startsWith("http") ? "[Visit Service](" + address + ")" : address,
+                                value: monitorJSON["type"] === "push" ? "Heartbeat" : address,
                            },
                            {
                                name: "Time (UTC)",
--- a/server/notification-providers/freemobile.js
+++ b/server/notification-providers/freemobile.js
@ -0,0 +1,24 @@
+const NotificationProvider = require("./notification-provider");
+const axios = require("axios");
+
+class FreeMobile extends NotificationProvider {
+
+    name = "FreeMobile";
+
+    async send(notification, msg, monitorJSON = null, heartbeatJSON = null) {
+        let okMsg = "Sent Successfully.";
+        try {
+            await axios.post(`https://smsapi.free-mobile.fr/sendmsg?msg=${encodeURIComponent(msg.replace("🔴", "⛔️"))}`, {
+                "user": notification.freemobileUser,
+                "pass": notification.freemobilePass,
+            });
+
+            return okMsg;
+
+        } catch (error) {
+            this.throwGeneralAxiosError(error);
+        }
+    }
+}
+
+module.exports = FreeMobile;
--- a/server/notification-providers/goalert.js
+++ b/server/notification-providers/goalert.js
@ -0,0 +1,35 @@
+const NotificationProvider = require("./notification-provider");
+const axios = require("axios");
+const { UP } = require("../../src/util");
+
+class GoAlert extends NotificationProvider {
+
+    name = "GoAlert";
+
+    async send(notification, msg, monitorJSON = null, heartbeatJSON = null) {
+        let okMsg = "Sent Successfully.";
+        try {
+            let closeAction = "close";
+            let data = {
+                summary: msg,
+            };
+            if (heartbeatJSON != null && heartbeatJSON["status"] === UP) {
+                data["action"] = closeAction;
+            }
+            let headers = {
+                "Content-Type": "multipart/form-data",
+            };
+            let config = {
+                headers: headers
+            };
+            await axios.post(`${notification.goAlertBaseURL}/api/v2/generic/incoming?token=${notification.goAlertToken}`, data, config);
+            return okMsg;
+
+        } catch (error) {
+            let msg = (error.response.data) ? error.response.data : "Error without response";
+            throw new Error(msg);
+        }
+    }
+}
+
+module.exports = GoAlert;
--- a/server/notification-providers/home-assistant.js
+++ b/server/notification-providers/home-assistant.js
@ -0,0 +1,38 @@
+const NotificationProvider = require("./notification-provider");
+const axios = require("axios");
+
+const defaultNotificationService = "notify";
+
+class HomeAssistant extends NotificationProvider {
+    name = "HomeAssistant";
+
+    async send(notification, message, monitor = null, heartbeat = null) {
+        const notificationService = notification?.notificationService || defaultNotificationService;
+
+        try {
+            await axios.post(
+                `${notification.homeAssistantUrl}/api/services/notify/${notificationService}`,
+                {
+                    title: "Uptime Kuma",
+                    message,
+                    ...(notificationService !== "persistent_notification" && { data: {
+                        name: monitor?.name,
+                        status: heartbeat?.status,
+                    } }),
+                },
+                {
+                    headers: {
+                        Authorization: `Bearer ${notification.longLivedAccessToken}`,
+                        "Content-Type": "application/json",
+                    },
+                }
+            );
+
+            return "Sent Successfully.";
+        } catch (error) {
+            this.throwGeneralAxiosError(error);
+        }
+    }
+}
+
+module.exports = HomeAssistant;
--- a/server/notification-providers/kook.js
+++ b/server/notification-providers/kook.js
@ -0,0 +1,31 @@
+const NotificationProvider = require("./notification-provider");
+const axios = require("axios");
+
+class Kook extends NotificationProvider {
+
+    name = "Kook";
+
+    async send(notification, msg, monitorJSON = null, heartbeatJSON = null) {
+        let okMsg = "Sent Successfully.";
+        let url = "https://www.kookapp.cn/api/v3/message/create";
+        let data = {
+            target_id: notification.kookGuildID,
+            content: msg,
+        };
+        let config = {
+            headers: {
+                "Authorization": "Bot " + notification.kookBotToken,
+                "Content-Type": "application/json",
+            },
+        };
+        try {
+            await axios.post(url, data, config);
+            return okMsg;
+
+        } catch (error) {
+            this.throwGeneralAxiosError(error);
+        }
+    }
+}
+
+module.exports = Kook;
--- a/server/notification-providers/linenotify.js
+++ b/server/notification-providers/linenotify.js
@ -0,0 +1,43 @@
+const NotificationProvider = require("./notification-provider");
+const axios = require("axios");
+const qs = require("qs");
+const { DOWN, UP } = require("../../src/util");
+
+class LineNotify extends NotificationProvider {
+
+    name = "LineNotify";
+
+    async send(notification, msg, monitorJSON = null, heartbeatJSON = null) {
+        let okMsg = "Sent Successfully.";
+        try {
+            let lineAPIUrl = "https://notify-api.line.me/api/notify";
+            let config = {
+                headers: {
+                    "Content-Type": "application/x-www-form-urlencoded",
+                    "Authorization": "Bearer " + notification.lineNotifyAccessToken
+                }
+            };
+            if (heartbeatJSON == null) {
+                let testMessage = {
+                    "message": msg,
+                };
+                await axios.post(lineAPIUrl, qs.stringify(testMessage), config);
+            } else if (heartbeatJSON["status"] === DOWN) {
+                let downMessage = {
+                    "message": "\n[🔴 Down]\n" + "Name: " + monitorJSON["name"] + " \n" + heartbeatJSON["msg"] + "\nTime (UTC): " + heartbeatJSON["time"]
+                };
+                await axios.post(lineAPIUrl, qs.stringify(downMessage), config);
+            } else if (heartbeatJSON["status"] === UP) {
+                let upMessage = {
+                    "message": "\n[✅ Up]\n" + "Name: " + monitorJSON["name"] + " \n" + heartbeatJSON["msg"] + "\nTime (UTC): " + heartbeatJSON["time"]
+                };
+                await axios.post(lineAPIUrl, qs.stringify(upMessage), config);
+            }
+            return okMsg;
+        } catch (error) {
+            this.throwGeneralAxiosError(error);
+        }
+    }
+}
+
+module.exports = LineNotify;
--- a/server/notification-providers/lunasea.js
+++ b/server/notification-providers/lunasea.js
@ -14,7 +14,7 @@ class LunaSea extends NotificationProvider {
            if (heartbeatJSON == null) {
                let testdata = {
                    "title": "Uptime Kuma Alert",
-                    "body": "Testing Successful.",
+                    "body": msg,
                };
                await axios.post(lunaseadevice, testdata);
                return okMsg;
--- a/server/notification-providers/ntfy.js
+++ b/server/notification-providers/ntfy.js
@ -8,12 +8,24 @@ class Ntfy extends NotificationProvider {
    async send(notification, msg, monitorJSON = null, heartbeatJSON = null) {
        let okMsg = "Sent Successfully.";
        try {
-            await axios.post(`${notification.ntfyserverurl}`, {
+            let headers = {};
+            if (notification.ntfyusername) {
+                headers = {
+                    "Authorization": "Basic " + Buffer.from(notification.ntfyusername + ":" + notification.ntfypassword).toString("base64"),
+                };
+            }
+            let data = {
                "topic": notification.ntfytopic,
                "message": msg,
                "priority": notification.ntfyPriority || 4,
                "title": "Uptime-Kuma",
-            });
+            };
+
+            if (notification.ntfyIcon) {
+                data.icon = notification.ntfyIcon;
+            }
+
+            await axios.post(`${notification.ntfyserverurl}`, data, { headers: headers });

            return okMsg;

--- a/server/notification-providers/octopush.js
+++ b/server/notification-providers/octopush.js
@ -10,7 +10,7 @@ class Octopush extends NotificationProvider {

        try {
        // Default - V2
-            if (notification.octopushVersion === 2 || !notification.octopushVersion) {
+            if (notification.octopushVersion === "2" || !notification.octopushVersion) {
                let config = {
                    headers: {
                        "api-key": notification.octopushAPIKey,
@ -31,7 +31,7 @@ class Octopush extends NotificationProvider {
                    "sender": notification.octopushSenderName
                };
                await axios.post("https://api.octopush.com/v1/public/sms-campaign/send", data, config);
-            } else if (notification.octopushVersion === 1) {
+            } else if (notification.octopushVersion === "1") {
                let data = {
                    "user_login": notification.octopushDMLogin,
                    "api_key": notification.octopushDMAPIKey,
@ -49,7 +49,15 @@ class Octopush extends NotificationProvider {
                    },
                    params: data
                };
-                await axios.post("https://www.octopush-dm.com/api/sms/json", {}, config);
+
+                // V1 API returns 200 even on error so we must check
+                // response data
+                let response = await axios.post("https://www.octopush-dm.com/api/sms/json", {}, config);
+                if ("error_code" in response.data) {
+                    if (response.data.error_code !== "000") {
+                        this.throwGeneralAxiosError(`Octopush error ${JSON.stringify(response.data)}`);
+                    }
+                }
            } else {
                throw new Error("Unknown Octopush version!");
            }
--- a/server/notification-providers/promosms.js
+++ b/server/notification-providers/promosms.js
@ -8,6 +8,14 @@ class PromoSMS extends NotificationProvider {
    async send(notification, msg, monitorJSON = null, heartbeatJSON = null) {
        let okMsg = "Sent Successfully.";

+        if (notification.promosmsAllowLongSMS === undefined) {
+            notification.promosmsAllowLongSMS = false;
+        }
+
+        //TODO: Add option for enabling special characters. It will decrese message max length from 160 to 70 chars.
+        //Lets remove non ascii char
+        let cleanMsg = msg.replace(/[^\x00-\x7F]/g, "");
+
        try {
            let config = {
                headers: {
@ -18,8 +26,9 @@ class PromoSMS extends NotificationProvider {
            };
            let data = {
                "recipients": [ notification.promosmsPhoneNumber ],
-                //Lets remove non ascii char
-                "text": msg.replace(/[^\x00-\x7F]/g, ""),
+                //Trim message to maximum length of 1 SMS or 4 if we allowed long messages
+                "text": notification.promosmsAllowLongSMS ? cleanMsg.substring(0, 639) : cleanMsg.substring(0, 159),
+                "long-sms": notification.promosmsAllowLongSMS,
                "type": Number(notification.promosmsSMSType),
                "sender": notification.promosmsSenderName
            };
--- a/server/notification-providers/pushbullet.js
+++ b/server/notification-providers/pushbullet.js
@ -19,26 +19,26 @@ class Pushbullet extends NotificationProvider {
                }
            };
            if (heartbeatJSON == null) {
-                let testdata = {
+                let data = {
                    "type": "note",
                    "title": "Uptime Kuma Alert",
-                    "body": "Testing Successful.",
+                    "body": msg,
                };
-                await axios.post(pushbulletUrl, testdata, config);
+                await axios.post(pushbulletUrl, data, config);
            } else if (heartbeatJSON["status"] === DOWN) {
-                let downdata = {
+                let downData = {
                    "type": "note",
                    "title": "UptimeKuma Alert: " + monitorJSON["name"],
                    "body": "[🔴 Down] " + heartbeatJSON["msg"] + "\nTime (UTC): " + heartbeatJSON["time"],
                };
-                await axios.post(pushbulletUrl, downdata, config);
+                await axios.post(pushbulletUrl, downData, config);
            } else if (heartbeatJSON["status"] === UP) {
-                let updata = {
+                let upData = {
                    "type": "note",
                    "title": "UptimeKuma Alert: " + monitorJSON["name"],
                    "body": "[✅ Up] " + heartbeatJSON["msg"] + "\nTime (UTC): " + heartbeatJSON["time"],
                };
-                await axios.post(pushbulletUrl, updata, config);
+                await axios.post(pushbulletUrl, upData, config);
            }
            return okMsg;
        } catch (error) {
--- a/server/notification-providers/pushover.js
+++ b/server/notification-providers/pushover.js
@ -10,7 +10,7 @@ class Pushover extends NotificationProvider {
        let pushoverlink = "https://api.pushover.net/1/messages.json";

        let data = {
-            "message": "<b>Uptime Kuma Alert</b>\n\n<b>Message</b>:" + msg,
+            "message": "<b>Message</b>:" + msg,
            "user": notification.pushoveruserkey,
            "token": notification.pushoverapptoken,
            "sound": notification.pushoversounds,
--- a/server/notification-providers/serverchan.js
+++ b/server/notification-providers/serverchan.js
@ -0,0 +1,42 @@
+const NotificationProvider = require("./notification-provider");
+const axios = require("axios");
+const { DOWN, UP } = require("../../src/util");
+
+class ServerChan extends NotificationProvider {
+
+    name = "ServerChan";
+
+    async send(notification, msg, monitorJSON = null, heartbeatJSON = null) {
+        let okMsg = "Sent Successfully.";
+        try {
+            await axios.post(`https://sctapi.ftqq.com/${notification.serverChanSendKey}.send`, {
+                "title": this.checkStatus(heartbeatJSON, monitorJSON),
+                "desp": msg,
+            });
+
+            return okMsg;
+
+        } catch (error) {
+            this.throwGeneralAxiosError(error);
+        }
+    }
+
+    /**
+     * Get the formatted title for message
+     * @param {?Object} monitorJSON Monitor details (For Up/Down only)
+     * @param {?Object} heartbeatJSON Heartbeat details (For Up/Down only)
+     * @returns {string} Formatted title
+     */
+    checkStatus(heartbeatJSON, monitorJSON) {
+        let title = "UptimeKuma Message";
+        if (heartbeatJSON != null && heartbeatJSON["status"] === UP) {
+            title = "UptimeKuma Monitor Up " + monitorJSON["name"];
+        }
+        if (heartbeatJSON != null && heartbeatJSON["status"] === DOWN) {
+            title = "UptimeKuma Monitor Down " + monitorJSON["name"];
+        }
+        return title;
+    }
+}
+
+module.exports = ServerChan;
--- a/server/notification-providers/slack.js
+++ b/server/notification-providers/slack.js
@ -1,7 +1,7 @@
 const NotificationProvider = require("./notification-provider");
 const axios = require("axios");
 const { setSettings, setting } = require("../util-server");
-const { getMonitorRelativeURL } = require("../../src/util");
+const { getMonitorRelativeURL, UP } = require("../../src/util");

 class Slack extends NotificationProvider {

@ -46,24 +46,31 @@ class Slack extends NotificationProvider {
                "channel": notification.slackchannel,
                "username": notification.slackusername,
                "icon_emoji": notification.slackiconemo,
-                "blocks": [{
-                    "type": "header",
-                    "text": {
-                        "type": "plain_text",
-                        "text": "Uptime Kuma Alert",
-                    },
-                },
-                {
-                    "type": "section",
-                    "fields": [{
-                        "type": "mrkdwn",
-                        "text": "*Message*\n" + msg,
-                    },
+                "attachments": [
                    {
-                        "type": "mrkdwn",
-                        "text": "*Time (UTC)*\n" + time,
-                    }],
-                }],
+                        "color": (heartbeatJSON["status"] === UP) ? "#2eb886" : "#e01e5a",
+                        "blocks": [
+                            {
+                                "type": "header",
+                                "text": {
+                                    "type": "plain_text",
+                                    "text": "Uptime Kuma Alert",
+                                },
+                            },
+                            {
+                                "type": "section",
+                                "fields": [{
+                                    "type": "mrkdwn",
+                                    "text": "*Message*\n" + msg,
+                                },
+                                {
+                                    "type": "mrkdwn",
+                                    "text": "*Time (UTC)*\n" + time,
+                                }],
+                            }
+                        ],
+                    }
+                ]
            };

            if (notification.slackbutton) {
@ -74,17 +81,19 @@ class Slack extends NotificationProvider {

            // Button
            if (baseURL) {
-                data.blocks.push({
-                    "type": "actions",
-                    "elements": [{
-                        "type": "button",
-                        "text": {
-                            "type": "plain_text",
-                            "text": "Visit Uptime Kuma",
-                        },
-                        "value": "Uptime-Kuma",
-                        "url": baseURL + getMonitorRelativeURL(monitorJSON.id),
-                    }],
+                data.attachments.forEach(element => {
+                    element.blocks.push({
+                        "type": "actions",
+                        "elements": [{
+                            "type": "button",
+                            "text": {
+                                "type": "plain_text",
+                                "text": "Visit Uptime Kuma",
+                            },
+                            "value": "Uptime-Kuma",
+                            "url": baseURL + getMonitorRelativeURL(monitorJSON.id),
+                        }],
+                    });
                });
            }

--- a/server/notification-providers/smseagle.js
+++ b/server/notification-providers/smseagle.js
@ -0,0 +1,71 @@
+const NotificationProvider = require("./notification-provider");
+const axios = require("axios");
+
+class SMSEagle extends NotificationProvider {
+
+    name = "SMSEagle";
+
+    async send(notification, msg, monitorJSON = null, heartbeatJSON = null) {
+        let okMsg = "Sent Successfully.";
+
+        try {
+            let config = {
+                headers: {
+                    "Content-Type": "application/json",
+                }
+            };
+
+            let postData;
+            let sendMethod;
+            let recipientType;
+
+            let encoding = (notification.smseagleEncoding) ? "1" : "0";
+            let priority = (notification.smseaglePriority) ? notification.smseaglePriority : "0";
+
+            if (notification.smseagleRecipientType === "smseagle-contact") {
+                recipientType = "contactname";
+                sendMethod = "sms.send_tocontact";
+            }
+            if (notification.smseagleRecipientType === "smseagle-group") {
+                recipientType = "groupname";
+                sendMethod = "sms.send_togroup";
+            }
+            if (notification.smseagleRecipientType === "smseagle-to") {
+                recipientType = "to";
+                sendMethod = "sms.send_sms";
+            }
+
+            let params = {
+                access_token: notification.smseagleToken,
+                [recipientType]: notification.smseagleRecipient,
+                message: msg,
+                responsetype: "extended",
+                unicode: encoding,
+                highpriority: priority
+            };
+
+            postData = {
+                method: sendMethod,
+                params: params
+            };
+
+            let resp = await axios.post(notification.smseagleUrl + "/jsonrpc/sms", postData, config);
+
+            if ((JSON.stringify(resp.data)).indexOf("message_id") === -1) {
+                let error = "";
+                if (resp.data.result && resp.data.result.error_text) {
+                    error = `SMSEagle API returned error: ${JSON.stringify(resp.data.result.error_text)}`;
+                } else {
+                    error = "SMSEagle API returned an unexpected response";
+                }
+                throw new Error(error);
+            }
+
+            return okMsg;
+        } catch (error) {
+            this.throwGeneralAxiosError(error);
+        }
+    }
+}
+
+module.exports = SMSEagle;
--- a/server/notification-providers/smsmanager.js
+++ b/server/notification-providers/smsmanager.js
@ -0,0 +1,25 @@
+const NotificationProvider = require("./notification-provider");
+const axios = require("axios");
+
+class SMSManager extends NotificationProvider {
+
+    name = "SMSManager";
+
+    async send(notification, msg, monitorJSON = null, heartbeatJSON = null) {
+        try {
+            let data = {
+                apikey: notification.smsmanagerApiKey,
+                endpoint: "https://http-api.smsmanager.cz/Send",
+                message: msg.replace(/[^\x00-\x7F]/g, ""),
+                to: notification.numbers,
+                messageType: notification.messageType,
+            };
+            await axios.get(`${data.endpoint}?apikey=${data.apikey}&message=${data.message}&number=${data.to}&gateway=${data.messageType}`);
+            return "SMS sent sucessfully.";
+        } catch (error) {
+            this.throwGeneralAxiosError(error);
+        }
+    }
+}
+
+module.exports = SMSManager;
--- a/server/notification-providers/splunk.js
+++ b/server/notification-providers/splunk.js
@ -0,0 +1,113 @@
+const NotificationProvider = require("./notification-provider");
+const axios = require("axios");
+const { UP, DOWN, getMonitorRelativeURL } = require("../../src/util");
+const { setting } = require("../util-server");
+let successMessage = "Sent Successfully.";
+
+class Splunk extends NotificationProvider {
+    name = "Splunk";
+
+    /**
+     * @inheritdoc
+     */
+    async send(notification, msg, monitorJSON = null, heartbeatJSON = null) {
+        try {
+            if (heartbeatJSON == null) {
+                const title = "Uptime Kuma Alert";
+                const monitor = {
+                    type: "ping",
+                    url: "Uptime Kuma Test Button",
+                };
+                return this.postNotification(notification, title, msg, monitor, "trigger");
+            }
+
+            if (heartbeatJSON.status === UP) {
+                const title = "Uptime Kuma Monitor ✅ Up";
+                return this.postNotification(notification, title, heartbeatJSON.msg, monitorJSON, "recovery");
+            }
+
+            if (heartbeatJSON.status === DOWN) {
+                const title = "Uptime Kuma Monitor 🔴 Down";
+                return this.postNotification(notification, title, heartbeatJSON.msg, monitorJSON, "trigger");
+            }
+        } catch (error) {
+            this.throwGeneralAxiosError(error);
+        }
+    }
+
+    /**
+     * Check if result is successful, result code should be in range 2xx
+     * @param {Object} result Axios response object
+     * @throws {Error} The status code is not in range 2xx
+     */
+    checkResult(result) {
+        if (result.status == null) {
+            throw new Error("Splunk notification failed with invalid response!");
+        }
+        if (result.status < 200 || result.status >= 300) {
+            throw new Error("Splunk notification failed with status code " + result.status);
+        }
+    }
+
+    /**
+     * Send the message
+     * @param {BeanModel} notification Message title
+     * @param {string} title Message title
+     * @param {string} body Message
+     * @param {Object} monitorInfo Monitor details (For Up/Down only)
+     * @param {?string} eventAction Action event for PagerDuty (trigger, acknowledge, resolve)
+     * @returns {string}
+     */
+    async postNotification(notification, title, body, monitorInfo, eventAction = "trigger") {
+
+        let monitorUrl;
+        if (monitorInfo.type === "port") {
+            monitorUrl = monitorInfo.hostname;
+            if (monitorInfo.port) {
+                monitorUrl += ":" + monitorInfo.port;
+            }
+        } else if (monitorInfo.hostname != null) {
+            monitorUrl = monitorInfo.hostname;
+        } else {
+            monitorUrl = monitorInfo.url;
+        }
+
+        if (eventAction === "recovery") {
+            if (notification.splunkAutoResolve === "0") {
+                return "No action required";
+            }
+            eventAction = notification.splunkAutoResolve;
+        } else {
+            eventAction = notification.splunkSeverity;
+        }
+
+        const options = {
+            method: "POST",
+            url: notification.splunkRestURL,
+            headers: { "Content-Type": "application/json" },
+            data: {
+                message_type: eventAction,
+                state_message: `[${title}] [${monitorUrl}] ${body}`,
+                entity_display_name: "Uptime Kuma Alert: " + monitorInfo.name,
+                routing_key: notification.pagerdutyIntegrationKey,
+                entity_id: "Uptime Kuma/" + monitorInfo.id,
+            }
+        };
+
+        const baseURL = await setting("primaryBaseURL");
+        if (baseURL && monitorInfo) {
+            options.client = "Uptime Kuma";
+            options.client_url = baseURL + getMonitorRelativeURL(monitorInfo.id);
+        }
+
+        let result = await axios.request(options);
+        this.checkResult(result);
+        if (result.statusText != null) {
+            return "Splunk notification succeed: " + result.statusText;
+        }
+
+        return successMessage;
+    }
+}
+
+module.exports = Splunk;
--- a/server/notification-providers/squadcast.js
+++ b/server/notification-providers/squadcast.js
@ -0,0 +1,76 @@
+const NotificationProvider = require("./notification-provider");
+const axios = require("axios");
+const { DOWN } = require("../../src/util");
+
+class Squadcast extends NotificationProvider {
+
+    name = "squadcast";
+
+    async send(notification, msg, monitorJSON = null, heartbeatJSON = null) {
+        let okMsg = "Sent Successfully.";
+
+        try {
+
+            let config = {};
+            let data = {
+                message: msg,
+                description: "",
+                tags: {},
+                heartbeat: heartbeatJSON,
+                source: "uptime-kuma"
+            };
+
+            if (heartbeatJSON !== null) {
+                data.description = heartbeatJSON["msg"];
+                data.event_id = heartbeatJSON["monitorID"];
+
+                if (heartbeatJSON["status"] === DOWN) {
+                    data.message = `${monitorJSON["name"]} is DOWN`;
+                    data.status = "trigger";
+                } else {
+                    data.message = `${monitorJSON["name"]} is UP`;
+                    data.status = "resolve";
+                }
+
+                let address;
+                switch (monitorJSON["type"]) {
+                    case "ping":
+                        address = monitorJSON["hostname"];
+                        break;
+                    case "port":
+                    case "dns":
+                    case "steam":
+                        address = monitorJSON["hostname"];
+                        if (monitorJSON["port"]) {
+                            address += ":" + monitorJSON["port"];
+                        }
+                        break;
+                    default:
+                        address = monitorJSON["url"];
+                        break;
+                }
+
+                data.tags["AlertAddress"] = address;
+
+                monitorJSON["tags"].forEach(tag => {
+                    data.tags[tag["name"]] = {
+                        value: tag["value"]
+                    };
+                    if (tag["color"] !== null) {
+                        data.tags[tag["name"]]["color"] = tag["color"];
+                    }
+                });
+            }
+
+            await axios.post(notification.squadcastWebhookURL, data, config);
+            return okMsg;
+
+        } catch (error) {
+            this.throwGeneralAxiosError(error);
+        }
+
+    }
+
+}
+
+module.exports = Squadcast;
--- a/server/notification-providers/teams.js
+++ b/server/notification-providers/teams.js
@ -63,7 +63,7 @@ class Teams extends NotificationProvider {
            });
        }

-        if (monitorUrl) {
+        if (monitorUrl && monitorUrl !== "https://") {
            facts.push({
                name: "URL",
                value: monitorUrl,
@ -127,13 +127,17 @@ class Teams extends NotificationProvider {

            let url;

-            if (monitorJSON["type"] === "port") {
-                url = monitorJSON["hostname"];
-                if (monitorJSON["port"]) {
-                    url += ":" + monitorJSON["port"];
-                }
-            } else {
-                url = monitorJSON["url"];
+            switch (monitorJSON["type"]) {
+                case "http":
+                case "keywork":
+                    url = monitorJSON["url"];
+                    break;
+                case "docker":
+                    url = monitorJSON["docker_host"];
+                    break;
+                default:
+                    url = monitorJSON["hostname"];
+                    break;
            }

            const payload = this._notificationPayloadFactory({
--- a/server/notification-providers/webhook.js
+++ b/server/notification-providers/webhook.js
@ -16,20 +16,29 @@ class Webhook extends NotificationProvider {
                msg,
            };
            let finalData;
-            let config = {};
+            let config = {
+                headers: {}
+            };

            if (notification.webhookContentType === "form-data") {
                finalData = new FormData();
                finalData.append("data", JSON.stringify(data));
-
-                config = {
-                    headers: finalData.getHeaders(),
-                };
-
+                config.headers = finalData.getHeaders();
            } else {
                finalData = data;
            }

+            if (notification.webhookAdditionalHeaders) {
+                try {
+                    config.headers = {
+                        ...config.headers,
+                        ...JSON.parse(notification.webhookAdditionalHeaders)
+                    };
+                } catch (err) {
+                    throw "Additional Headers is not a valid JSON";
+                }
+            }
+
            await axios.post(notification.webhookURL, finalData, config);
            return okMsg;

--- a/server/notification-providers/zoho-cliq.js
+++ b/server/notification-providers/zoho-cliq.js
@ -0,0 +1,116 @@
+const NotificationProvider = require("./notification-provider");
+const axios = require("axios");
+const { DOWN, UP } = require("../../src/util");
+
+class ZohoCliq extends NotificationProvider {
+
+    name = "ZohoCliq";
+
+    /**
+     * Generate the message to send
+     * @param {const} status The status constant
+     * @param {string} monitorName Name of monitor
+     * @returns {string}
+     */
+    _statusMessageFactory = (status, monitorName) => {
+        if (status === DOWN) {
+            return `🔴 Application [${monitorName}] went down\n`;
+        } else if (status === UP) {
+            return `✅ Application [${monitorName}] is back online\n`;
+        }
+        return "Notification\n";
+    };
+
+    /**
+     * Send the notification
+     * @param {string} webhookUrl URL to send the request to
+     * @param {Array} payload Payload generated by _notificationPayloadFactory
+     */
+    _sendNotification = async (webhookUrl, payload) => {
+        await axios.post(webhookUrl, { text: payload.join("\n") });
+    };
+
+    /**
+     * Generate payload for notification
+     * @param {const} status The status of the monitor
+     * @param {string} monitorMessage Message to send
+     * @param {string} monitorName Name of monitor affected
+     * @param {string} monitorUrl URL of monitor affected
+     * @returns {Array}
+     */
+    _notificationPayloadFactory = ({
+        status,
+        monitorMessage,
+        monitorName,
+        monitorUrl,
+    }) => {
+        const payload = [];
+        payload.push("### Uptime Kuma\n");
+        payload.push(this._statusMessageFactory(status, monitorName));
+        payload.push(`*Description:* ${monitorMessage}`);
+
+        if (monitorName) {
+            payload.push(`*Monitor:* ${monitorName}`);
+        }
+
+        if (monitorUrl && monitorUrl !== "https://") {
+            payload.push(`*URL:* [${monitorUrl}](${monitorUrl})`);
+        }
+
+        return payload;
+    };
+
+    /**
+     * Send a general notification
+     * @param {string} webhookUrl URL to send request to
+     * @param {string} msg Message to send
+     * @returns {Promise<void>}
+     */
+    _handleGeneralNotification = (webhookUrl, msg) => {
+        const payload = this._notificationPayloadFactory({
+            monitorMessage: msg
+        });
+
+        return this._sendNotification(webhookUrl, payload);
+    };
+
+    async send(notification, msg, monitorJSON = null, heartbeatJSON = null) {
+        let okMsg = "Sent Successfully.";
+
+        try {
+            if (heartbeatJSON == null) {
+                await this._handleGeneralNotification(notification.webhookUrl, msg);
+                return okMsg;
+            }
+
+            let url;
+            switch (monitorJSON["type"]) {
+                case "http":
+                case "keywork":
+                    url = monitorJSON["url"];
+                    break;
+                case "docker":
+                    url = monitorJSON["docker_host"];
+                    break;
+                default:
+                    url = monitorJSON["hostname"];
+                    break;
+            }
+
+            const payload = this._notificationPayloadFactory({
+                monitorMessage: heartbeatJSON.msg,
+                monitorName: monitorJSON.name,
+                monitorUrl: url,
+                status: heartbeatJSON.status
+            });
+
+            await this._sendNotification(notification.webhookUrl, payload);
+            return okMsg;
+
+        } catch (error) {
+            this.throwGeneralAxiosError(error);
+        }
+    }
+}
+
+module.exports = ZohoCliq;
--- a/server/notification.js
+++ b/server/notification.js
@ -1,40 +1,52 @@
 const { R } = require("redbean-node");
+const { log } = require("../src/util");
+const Alerta = require("./notification-providers/alerta");
+const AlertNow = require("./notification-providers/alertnow");
+const AliyunSms = require("./notification-providers/aliyun-sms");
 const Apprise = require("./notification-providers/apprise");
-const Discord = require("./notification-providers/discord");
-const Gotify = require("./notification-providers/gotify");
-const Ntfy = require("./notification-providers/ntfy");
-const Line = require("./notification-providers/line");
-const LunaSea = require("./notification-providers/lunasea");
-const Mattermost = require("./notification-providers/mattermost");
-const Matrix = require("./notification-providers/matrix");
-const Octopush = require("./notification-providers/octopush");
-const PromoSMS = require("./notification-providers/promosms");
+const Bark = require("./notification-providers/bark");
 const ClickSendSMS = require("./notification-providers/clicksendsms");
+const DingDing = require("./notification-providers/dingding");
+const Discord = require("./notification-providers/discord");
+const Feishu = require("./notification-providers/feishu");
+const FreeMobile = require("./notification-providers/freemobile");
+const GoogleChat = require("./notification-providers/google-chat");
+const Gorush = require("./notification-providers/gorush");
+const Gotify = require("./notification-providers/gotify");
+const HomeAssistant = require("./notification-providers/home-assistant");
+const Kook = require("./notification-providers/kook");
+const Line = require("./notification-providers/line");
+const LineNotify = require("./notification-providers/linenotify");
+const LunaSea = require("./notification-providers/lunasea");
+const Matrix = require("./notification-providers/matrix");
+const Mattermost = require("./notification-providers/mattermost");
+const Ntfy = require("./notification-providers/ntfy");
+const Octopush = require("./notification-providers/octopush");
+const OneBot = require("./notification-providers/onebot");
+const PagerDuty = require("./notification-providers/pagerduty");
+const PromoSMS = require("./notification-providers/promosms");
 const Pushbullet = require("./notification-providers/pushbullet");
+const PushDeer = require("./notification-providers/pushdeer");
 const Pushover = require("./notification-providers/pushover");
 const Pushy = require("./notification-providers/pushy");
-const TechulusPush = require("./notification-providers/techulus-push");
 const RocketChat = require("./notification-providers/rocket-chat");
+const SerwerSMS = require("./notification-providers/serwersms");
 const Signal = require("./notification-providers/signal");
 const Slack = require("./notification-providers/slack");
+const SMSEagle = require("./notification-providers/smseagle");
 const SMTP = require("./notification-providers/smtp");
-const Teams = require("./notification-providers/teams");
-const Telegram = require("./notification-providers/telegram");
-const Webhook = require("./notification-providers/webhook");
-const Feishu = require("./notification-providers/feishu");
-const AliyunSms = require("./notification-providers/aliyun-sms");
-const DingDing = require("./notification-providers/dingding");
-const Bark = require("./notification-providers/bark");
-const { log } = require("../src/util");
-const SerwerSMS = require("./notification-providers/serwersms");
+const Squadcast = require("./notification-providers/squadcast");
 const Stackfield = require("./notification-providers/stackfield");
+const Teams = require("./notification-providers/teams");
+const TechulusPush = require("./notification-providers/techulus-push");
+const Telegram = require("./notification-providers/telegram");
+const Splunk = require("./notification-providers/splunk");
+const Webhook = require("./notification-providers/webhook");
 const WeCom = require("./notification-providers/wecom");
-const GoogleChat = require("./notification-providers/google-chat");
-const PagerDuty = require("./notification-providers/pagerduty");
-const Gorush = require("./notification-providers/gorush");
-const Alerta = require("./notification-providers/alerta");
-const OneBot = require("./notification-providers/onebot");
-const PushDeer = require("./notification-providers/pushdeer");
+const GoAlert = require("./notification-providers/goalert");
+const SMSManager = require("./notification-providers/smsmanager");
+const ServerChan = require("./notification-providers/serverchan");
+const ZohoCliq = require("./notification-providers/zoho-cliq");

 class Notification {

@ -47,41 +59,53 @@ class Notification {
        this.providerList = {};

        const list = [
-            new Apprise(),
+            new Alerta(),
+            new AlertNow(),
            new AliyunSms(),
+            new Apprise(),
+            new Bark(),
+            new ClickSendSMS(),
            new DingDing(),
            new Discord(),
-            new Teams(),
-            new Gotify(),
-            new Ntfy(),
-            new Line(),
-            new LunaSea(),
            new Feishu(),
-            new Mattermost(),
+            new FreeMobile(),
+            new GoogleChat(),
+            new Gorush(),
+            new Gotify(),
+            new HomeAssistant(),
+            new Kook(),
+            new Line(),
+            new LineNotify(),
+            new LunaSea(),
            new Matrix(),
+            new Mattermost(),
+            new Ntfy(),
            new Octopush(),
+            new OneBot(),
+            new PagerDuty(),
            new PromoSMS(),
-            new ClickSendSMS(),
            new Pushbullet(),
+            new PushDeer(),
            new Pushover(),
            new Pushy(),
-            new TechulusPush(),
            new RocketChat(),
-            new Signal(),
-            new Slack(),
-            new SMTP(),
-            new Telegram(),
-            new Webhook(),
-            new Bark(),
+            new ServerChan(),
            new SerwerSMS(),
+            new Signal(),
+            new SMSManager(),
+            new Slack(),
+            new SMSEagle(),
+            new SMTP(),
+            new Squadcast(),
            new Stackfield(),
+            new Teams(),
+            new TechulusPush(),
+            new Telegram(),
+            new Splunk(),
+            new Webhook(),
            new WeCom(),
-            new GoogleChat(),
-            new PagerDuty(),
-            new Gorush(),
-            new Alerta(),
-            new OneBot(),
-            new PushDeer(),
+            new GoAlert(),
+            new ZohoCliq()
        ];

        for (let item of list) {
--- a/server/ping-lite.js
+++ b/server/ping-lite.js
@ -1,199 +0,0 @@
-// https://github.com/ben-bradley/ping-lite/blob/master/ping-lite.js
-// Fixed on Windows
-const net = require("net");
-const spawn = require("child_process").spawn;
-const events = require("events");
-const fs = require("fs");
-const util = require("./util-server");
-
-module.exports = Ping;
-
-/**
- * Constructor for ping class
- * @param {string} host Host to ping
- * @param {object} [options] Options for the ping command
- * @param {array|string} [options.args] - Arguments to pass to the ping command
- */
-function Ping(host, options) {
-    if (!host) {
-        throw new Error("You must specify a host to ping!");
-    }
-
-    this._host = host;
-    this._options = options = (options || {});
-
-    events.EventEmitter.call(this);
-
-    const timeout = 10;
-
-    if (util.WIN) {
-        this._bin = "c:/windows/system32/ping.exe";
-        this._args = (options.args) ? options.args : [ "-n", "1", "-w", timeout * 1000, host ];
-        this._regmatch = /[><=]([0-9.]+?)ms/;
-
-    } else if (util.LIN) {
-        this._bin = "/bin/ping";
-
-        const defaultArgs = [ "-n", "-w", timeout, "-c", "1", host ];
-
-        if (net.isIPv6(host) || options.ipv6) {
-            defaultArgs.unshift("-6");
-        }
-
-        this._args = (options.args) ? options.args : defaultArgs;
-        this._regmatch = /=([0-9.]+?) ms/;
-
-    } else if (util.MAC) {
-
-        if (net.isIPv6(host) || options.ipv6) {
-            this._bin = "/sbin/ping6";
-        } else {
-            this._bin = "/sbin/ping";
-        }
-
-        this._args = (options.args) ? options.args : [ "-n", "-t", timeout, "-c", "1", host ];
-        this._regmatch = /=([0-9.]+?) ms/;
-
-    } else if (util.BSD) {
-        this._bin = "/sbin/ping";
-
-        const defaultArgs = [ "-n", "-t", timeout, "-c", "1", host ];
-
-        if (net.isIPv6(host) || options.ipv6) {
-            defaultArgs.unshift("-6");
-        }
-
-        this._args = (options.args) ? options.args : defaultArgs;
-        this._regmatch = /=([0-9.]+?) ms/;
-
-    } else {
-        throw new Error("Could not detect your ping binary.");
-    }
-
-    if (!fs.existsSync(this._bin)) {
-        throw new Error("Could not detect " + this._bin + " on your system");
-    }
-
-    this._i = 0;
-
-    return this;
-}
-
-Ping.prototype.__proto__ = events.EventEmitter.prototype;
-
-/**
- * Callback for send
- * @callback pingCB
- * @param {any} err Any error encountered
- * @param {number} ms Ping time in ms
- */
-
-/**
- * Send a ping
- * @param {pingCB} callback Callback to call with results
- */
-Ping.prototype.send = function (callback) {
-    let self = this;
-    callback = callback || function (err, ms) {
-        if (err) {
-            return self.emit("error", err);
-        }
-        return self.emit("result", ms);
-    };
-
-    let _ended;
-    let _exited;
-    let _errored;
-
-    this._ping = spawn(this._bin, this._args); // spawn the binary
-
-    this._ping.on("error", function (err) { // handle binary errors
-        _errored = true;
-        callback(err);
-    });
-
-    this._ping.stdout.on("data", function (data) { // log stdout
-        if (util.WIN) {
-            data = convertOutput(data);
-        }
-        this._stdout = (this._stdout || "") + data;
-    });
-
-    this._ping.stdout.on("end", function () {
-        _ended = true;
-        if (_exited && !_errored) {
-            onEnd.call(self._ping);
-        }
-    });
-
-    this._ping.stderr.on("data", function (data) { // log stderr
-        if (util.WIN) {
-            data = convertOutput(data);
-        }
-        this._stderr = (this._stderr || "") + data;
-    });
-
-    this._ping.on("exit", function (code) { // handle complete
-        _exited = true;
-        if (_ended && !_errored) {
-            onEnd.call(self._ping);
-        }
-    });
-
-    /**
-     * @param {Function} callback
-     *
-     * Generated by Trelent
-     */
-    function onEnd() {
-        let stdout = this.stdout._stdout;
-        let stderr = this.stderr._stderr;
-        let ms;
-
-        if (stderr) {
-            return callback(new Error(stderr));
-        }
-
-        if (!stdout) {
-            return callback(new Error("No stdout detected"));
-        }
-
-        ms = stdout.match(self._regmatch); // parse out the ##ms response
-        ms = (ms && ms[1]) ? Number(ms[1]) : ms;
-
-        callback(null, ms, stdout);
-    }
-};
-
-/**
- * Ping every interval
- * @param {pingCB} callback Callback to call with results
- */
-Ping.prototype.start = function (callback) {
-    let self = this;
-    this._i = setInterval(function () {
-        self.send(callback);
-    }, (self._options.interval || 5000));
-    self.send(callback);
-};
-
-/** Stop sending pings */
-Ping.prototype.stop = function () {
-    clearInterval(this._i);
-};
-
-/**
- * Try to convert to UTF-8 for Windows, as the ping's output on Windows is not UTF-8 and could be in other languages
- * Thank @pemassi
- * https://github.com/louislam/uptime-kuma/issues/570#issuecomment-941984094
- * @param {any} data
- * @returns {string}
- */
-function convertOutput(data) {
-    if (util.WIN) {
-        if (data) {
-            return util.convertToUTF8(data);
-        }
-    }
-    return data;
-}
--- a/server/prometheus.js
+++ b/server/prometheus.js
@ -99,6 +99,7 @@ class Prometheus {
        }
    }

+    /** Remove monitor from prometheus */
    remove() {
        try {
            monitorCertDaysRemaining.remove(this.monitorLabelValues);
--- a/server/proxy.js
+++ b/server/proxy.js
@ -7,7 +7,7 @@ const { UptimeKumaServer } = require("./uptime-kuma-server");

 class Proxy {

-    static SUPPORTED_PROXY_PROTOCOLS = [ "http", "https", "socks", "socks5", "socks4" ];
+    static SUPPORTED_PROXY_PROTOCOLS = [ "http", "https", "socks", "socks5", "socks5h", "socks4" ];

    /**
     * Saves and updates given proxy entity
@ -126,6 +126,7 @@ class Proxy {
                break;
            case "socks":
            case "socks5":
+            case "socks5h":
            case "socks4":
                agent = new SocksProxyAgent({
                    ...httpAgentOptions,
--- a/server/routers/api-router.js
+++ b/server/routers/api-router.js
@ -4,7 +4,7 @@ const { R } = require("redbean-node");
 const apicache = require("../modules/apicache");
 const Monitor = require("../model/monitor");
 const dayjs = require("dayjs");
-const { UP, DOWN, flipStatus, log } = require("../../src/util");
+const { UP, MAINTENANCE, DOWN, flipStatus, log } = require("../../src/util");
 const StatusPage = require("../model/status_page");
 const { UptimeKumaServer } = require("../uptime-kuma-server");
 const { makeBadge } = require("badge-maker");
@ -67,6 +67,11 @@ router.get("/api/push/:pushToken", async (request, response) => {
            duration = dayjs(bean.time).diff(dayjs(previousHeartbeat.time), "second");
        }

+        if (await Monitor.isUnderMaintenance(monitor.id)) {
+            msg = "Monitor under maintenance";
+            status = MAINTENANCE;
+        }
+
        log.debug("router", `/api/push/ called at ${dayjs().format("YYYY-MM-DD HH:mm:ss.SSS")}`);
        log.debug("router", "PreviousStatus: " + previousStatus);
        log.debug("router", "Current Status: " + status);
@ -87,7 +92,7 @@ router.get("/api/push/:pushToken", async (request, response) => {
            ok: true,
        });

-        if (bean.important) {
+        if (Monitor.isImportantForNotification(isFirstBeat, previousStatus, status)) {
            await Monitor.sendNotification(isFirstBeat, monitor, bean);
        }

@ -136,6 +141,7 @@ router.get("/api/badge/:id/status", cache("5 minutes"), async (request, response
            const heartbeat = await Monitor.getPreviousHeartbeat(requestedMonitorId);
            const state = overrideValue !== undefined ? overrideValue : heartbeat.status === 1;

+            badgeValues.label = label ? label : "";
            badgeValues.color = state ? upColor : downColor;
            badgeValues.message = label ?? state ? upLabel : downLabel;
        }
--- a/server/routers/status-page-router.js
+++ b/server/routers/status-page-router.js
@ -107,4 +107,42 @@ router.get("/api/status-page/heartbeat/:slug", cache("1 minutes"), async (reques
    }
 });

+// Status page's manifest.json
+router.get("/api/status-page/:slug/manifest.json", cache("1440 minutes"), async (request, response) => {
+    allowDevAllOrigin(response);
+    let slug = request.params.slug;
+
+    try {
+        // Get Status Page
+        let statusPage = await R.findOne("status_page", " slug = ? ", [
+            slug
+        ]);
+
+        if (!statusPage) {
+            response.statusCode = 404;
+            response.json({
+                msg: "Not Found"
+            });
+            return;
+        }
+
+        // Response
+        response.json({
+            "name": statusPage.title,
+            "start_url": "/status/" + statusPage.slug,
+            "display": "standalone",
+            "icons": [
+                {
+                    "src": statusPage.icon,
+                    "sizes": "128x128",
+                    "type": "image/png"
+                }
+            ]
+        });
+
+    } catch (error) {
+        send403(response, error.message);
+    }
+});
+
 module.exports = router;
--- a/server/server.js
+++ b/server/server.js
@ -5,6 +5,12 @@
 */
 console.log("Welcome to Uptime Kuma");

+// As the log function need to use dayjs, it should be very top
+const dayjs = require("dayjs");
+dayjs.extend(require("dayjs/plugin/utc"));
+dayjs.extend(require("./modules/dayjs/plugin/timezone"));
+dayjs.extend(require("dayjs/plugin/customParseFormat"));
+
 // Check Node.js Version
 const nodeVersion = parseInt(process.versions.node.split(".")[0]);
 const requiredVersion = 14;
@ -33,6 +39,7 @@ log.info("server", "Importing Node libraries");
 const fs = require("fs");

 log.info("server", "Importing 3rd-party libraries");
+
 log.debug("server", "Importing express");
 const express = require("express");
 const expressStaticGzip = require("express-static-gzip");
@ -61,7 +68,7 @@ log.info("server", "Importing this project modules");
 log.debug("server", "Importing Monitor");
 const Monitor = require("./model/monitor");
 log.debug("server", "Importing Settings");
-const { getSettings, setSettings, setting, initJWTSecret, checkLogin, startUnitTest, FBSD, doubleCheckPassword } = require("./util-server");
+const { getSettings, setSettings, setting, initJWTSecret, checkLogin, startUnitTest, FBSD, doubleCheckPassword, startE2eTests } = require("./util-server");

 log.debug("server", "Importing Notification");
 const { Notification } = require("./notification");
@ -112,19 +119,25 @@ const twoFAVerifyOptions = {
 * @type {boolean}
 */
 const testMode = !!args["test"] || false;
+const e2eTestMode = !!args["e2e"] || false;

 if (config.demoMode) {
    log.info("server", "==== Demo Mode ====");
 }

 // Must be after io instantiation
-const { sendNotificationList, sendHeartbeatList, sendImportantHeartbeatList, sendInfo, sendProxyList } = require("./client");
+const { sendNotificationList, sendHeartbeatList, sendImportantHeartbeatList, sendInfo, sendProxyList, sendDockerHostList } = require("./client");
 const { statusPageSocketHandler } = require("./socket-handlers/status-page-socket-handler");
 const databaseSocketHandler = require("./socket-handlers/database-socket-handler");
 const TwoFA = require("./2fa");
 const StatusPage = require("./model/status_page");
 const { cloudflaredSocketHandler, autoStart: cloudflaredAutoStart, stop: cloudflaredStop } = require("./socket-handlers/cloudflared-socket-handler");
 const { proxySocketHandler } = require("./socket-handlers/proxy-socket-handler");
+const { dockerSocketHandler } = require("./socket-handlers/docker-socket-handler");
+const { maintenanceSocketHandler } = require("./socket-handlers/maintenance-socket-handler");
+const { generalSocketHandler } = require("./socket-handlers/general-socket-handler");
+const { Settings } = require("./settings");
+const { CacheableDnsHttpAgent } = require("./cacheable-dns-http-agent");

 app.use(express.json());

@ -152,8 +165,9 @@ let needSetup = false;
 (async () => {
    Database.init(args);
    await initDatabase(testMode);
+    await server.initAfterDatabaseReady();

-    exports.entryPage = await setting("entryPage");
+    server.entryPage = await Settings.get("entryPage");
    await StatusPage.loadDomainMappingList();

    log.info("server", "Adding route");
@ -164,16 +178,25 @@ let needSetup = false;

    // Entry Page
    app.get("/", async (request, response) => {
-        log.debug("entry", `Request Domain: ${request.hostname}`);
+        let hostname = request.hostname;
+        if (await setting("trustProxy")) {
+            const proxy = request.headers["x-forwarded-host"];
+            if (proxy) {
+                hostname = proxy;
+            }
+        }

-        if (request.hostname in StatusPage.domainMappingList) {
+        log.debug("entry", `Request Domain: ${hostname}`);
+
+        const uptimeKumaEntryPage = server.entryPage;
+        if (hostname in StatusPage.domainMappingList) {
            log.debug("entry", "This is a status page domain");

-            let slug = StatusPage.domainMappingList[request.hostname];
+            let slug = StatusPage.domainMappingList[hostname];
            await StatusPage.handleStatusPageResponse(response, server.indexHTML, slug);

-        } else if (exports.entryPage && exports.entryPage.startsWith("statusPage-")) {
-            response.redirect("/status/" + exports.entryPage.replace("statusPage-", ""));
+        } else if (uptimeKumaEntryPage && uptimeKumaEntryPage.startsWith("statusPage-")) {
+            response.redirect("/status/" + uptimeKumaEntryPage.replace("statusPage-", ""));

        } else {
            response.redirect("/dashboard");
@ -182,6 +205,7 @@ let needSetup = false;

    if (isDev) {
        app.post("/test-webhook", async (request, response) => {
+            log.debug("test", request.headers);
            log.debug("test", request.body);
            response.send("OK");
        });
@ -190,7 +214,7 @@ let needSetup = false;
    // Robots.txt
    app.get("/robots.txt", async (_request, response) => {
        let txt = "User-agent: *\nDisallow:";
-        if (! await setting("searchEngineIndex")) {
+        if (!await setting("searchEngineIndex")) {
            txt += " /";
        }
        response.setHeader("Content-Type", "text/plain");
@ -246,7 +270,9 @@ let needSetup = false;
        // ***************************

        socket.on("loginByToken", async (token, callback) => {
-            log.info("auth", `Login by token. IP=${getClientIp(socket)}`);
+            const clientIP = await server.getClientIP(socket);
+
+            log.info("auth", `Login by token. IP=${clientIP}`);

            try {
                let decoded = jwt.verify(token, jwtSecret);
@ -262,14 +288,14 @@ let needSetup = false;
                    afterLogin(socket, user);
                    log.debug("auth", "afterLogin ok");

-                    log.info("auth", `Successfully logged in user ${decoded.username}. IP=${getClientIp(socket)}`);
+                    log.info("auth", `Successfully logged in user ${decoded.username}. IP=${clientIP}`);

                    callback({
                        ok: true,
                    });
                } else {

-                    log.info("auth", `Inactive or deleted user ${decoded.username}. IP=${getClientIp(socket)}`);
+                    log.info("auth", `Inactive or deleted user ${decoded.username}. IP=${clientIP}`);

                    callback({
                        ok: false,
@ -278,7 +304,7 @@ let needSetup = false;
                }
            } catch (error) {

-                log.error("auth", `Invalid token. IP=${getClientIp(socket)}`);
+                log.error("auth", `Invalid token. IP=${clientIP}`);

                callback({
                    ok: false,
@ -289,7 +315,9 @@ let needSetup = false;
        });

        socket.on("login", async (data, callback) => {
-            log.info("auth", `Login by username + password. IP=${getClientIp(socket)}`);
+            const clientIP = await server.getClientIP(socket);
+
+            log.info("auth", `Login by username + password. IP=${clientIP}`);

            // Checking
            if (typeof callback !== "function") {
@ -302,7 +330,7 @@ let needSetup = false;

            // Login Rate Limit
            if (! await loginRateLimiter.pass(callback)) {
-                log.info("auth", `Too many failed requests for user ${data.username}. IP=${getClientIp(socket)}`);
+                log.info("auth", `Too many failed requests for user ${data.username}. IP=${clientIP}`);
                return;
            }

@ -312,7 +340,7 @@ let needSetup = false;
                if (user.twofa_status === 0) {
                    afterLogin(socket, user);

-                    log.info("auth", `Successfully logged in user ${data.username}. IP=${getClientIp(socket)}`);
+                    log.info("auth", `Successfully logged in user ${data.username}. IP=${clientIP}`);

                    callback({
                        ok: true,
@ -324,7 +352,7 @@ let needSetup = false;

                if (user.twofa_status === 1 && !data.token) {

-                    log.info("auth", `2FA token required for user ${data.username}. IP=${getClientIp(socket)}`);
+                    log.info("auth", `2FA token required for user ${data.username}. IP=${clientIP}`);

                    callback({
                        tokenRequired: true,
@ -342,7 +370,7 @@ let needSetup = false;
                            socket.userID,
                        ]);

-                        log.info("auth", `Successfully logged in user ${data.username}. IP=${getClientIp(socket)}`);
+                        log.info("auth", `Successfully logged in user ${data.username}. IP=${clientIP}`);

                        callback({
                            ok: true,
@ -352,7 +380,7 @@ let needSetup = false;
                        });
                    } else {

-                        log.warn("auth", `Invalid token provided for user ${data.username}. IP=${getClientIp(socket)}`);
+                        log.warn("auth", `Invalid token provided for user ${data.username}. IP=${clientIP}`);

                        callback({
                            ok: false,
@ -362,7 +390,7 @@ let needSetup = false;
                }
            } else {

-                log.warn("auth", `Incorrect username or password for user ${data.username}. IP=${getClientIp(socket)}`);
+                log.warn("auth", `Incorrect username or password for user ${data.username}. IP=${clientIP}`);

                callback({
                    ok: false,
@ -434,6 +462,8 @@ let needSetup = false;
        });

        socket.on("save2FA", async (currentPassword, callback) => {
+            const clientIP = await server.getClientIP(socket);
+
            try {
                if (! await twoFaRateLimiter.pass(callback)) {
                    return;
@ -446,7 +476,7 @@ let needSetup = false;
                    socket.userID,
                ]);

-                log.info("auth", `Saved 2FA token. IP=${getClientIp(socket)}`);
+                log.info("auth", `Saved 2FA token. IP=${clientIP}`);

                callback({
                    ok: true,
@ -454,7 +484,7 @@ let needSetup = false;
                });
            } catch (error) {

-                log.error("auth", `Error changing 2FA token. IP=${getClientIp(socket)}`);
+                log.error("auth", `Error changing 2FA token. IP=${clientIP}`);

                callback({
                    ok: false,
@ -464,6 +494,8 @@ let needSetup = false;
        });

        socket.on("disable2FA", async (currentPassword, callback) => {
+            const clientIP = await server.getClientIP(socket);
+
            try {
                if (! await twoFaRateLimiter.pass(callback)) {
                    return;
@ -473,7 +505,7 @@ let needSetup = false;
                await doubleCheckPassword(socket, currentPassword);
                await TwoFA.disable2FA(socket.userID);

-                log.info("auth", `Disabled 2FA token. IP=${getClientIp(socket)}`);
+                log.info("auth", `Disabled 2FA token. IP=${clientIP}`);

                callback({
                    ok: true,
@ -481,7 +513,7 @@ let needSetup = false;
                });
            } catch (error) {

-                log.error("auth", `Error disabling 2FA token. IP=${getClientIp(socket)}`);
+                log.error("auth", `Error disabling 2FA token. IP=${clientIP}`);

                callback({
                    ok: false,
@ -602,6 +634,9 @@ let needSetup = false;

                bean.import(monitor);
                bean.user_id = socket.userID;
+
+                bean.validate();
+
                await R.store(bean);

                await updateMonitorNotification(bean.id, notificationIDList);
@ -652,9 +687,10 @@ let needSetup = false;
                bean.basic_auth_pass = monitor.basic_auth_pass;
                bean.interval = monitor.interval;
                bean.retryInterval = monitor.retryInterval;
+                bean.resendInterval = monitor.resendInterval;
                bean.hostname = monitor.hostname;
                bean.maxretries = monitor.maxretries;
-                bean.port = monitor.port;
+                bean.port = parseInt(monitor.port);
                bean.keyword = monitor.keyword;
                bean.ignoreTls = monitor.ignoreTls;
                bean.expiryNotification = monitor.expiryNotification;
@ -664,6 +700,8 @@ let needSetup = false;
                bean.dns_resolve_type = monitor.dns_resolve_type;
                bean.dns_resolve_server = monitor.dns_resolve_server;
                bean.pushToken = monitor.pushToken;
+                bean.docker_container = monitor.docker_container;
+                bean.docker_host = monitor.docker_host;
                bean.proxyId = Number.isInteger(monitor.proxyId) ? monitor.proxyId : null;
                bean.mqttUsername = monitor.mqttUsername;
                bean.mqttPassword = monitor.mqttPassword;
@ -674,6 +712,20 @@ let needSetup = false;
                bean.authMethod = monitor.authMethod;
                bean.authWorkstation = monitor.authWorkstation;
                bean.authDomain = monitor.authDomain;
+                bean.grpcUrl = monitor.grpcUrl;
+                bean.grpcProtobuf = monitor.grpcProtobuf;
+                bean.grpcServiceName = monitor.grpcServiceName;
+                bean.grpcMethod = monitor.grpcMethod;
+                bean.grpcBody = monitor.grpcBody;
+                bean.grpcMetadata = monitor.grpcMetadata;
+                bean.grpcEnableTls = monitor.grpcEnableTls;
+                bean.radiusUsername = monitor.radiusUsername;
+                bean.radiusPassword = monitor.radiusPassword;
+                bean.radiusCalledStationId = monitor.radiusCalledStationId;
+                bean.radiusCallingStationId = monitor.radiusCallingStationId;
+                bean.radiusSecret = monitor.radiusSecret;
+
+                bean.validate();

                await R.store(bean);

@ -889,13 +941,21 @@ let needSetup = false;
            try {
                checkLogin(socket);

-                let bean = await R.findOne("monitor", " id = ? ", [ tag.id ]);
+                let bean = await R.findOne("tag", " id = ? ", [ tag.id ]);
+                if (bean == null) {
+                    callback({
+                        ok: false,
+                        msg: "Tag not found",
+                    });
+                    return;
+                }
                bean.name = tag.name;
                bean.color = tag.color;
                await R.store(bean);

                callback({
                    ok: true,
+                    msg: "Saved",
                    tag: await bean.toJSON(),
                });

@ -1029,10 +1089,15 @@ let needSetup = false;
        socket.on("getSettings", async (callback) => {
            try {
                checkLogin(socket);
+                const data = await getSettings("general");
+
+                if (!data.serverTimezone) {
+                    data.serverTimezone = await server.getTimezone();
+                }

                callback({
                    ok: true,
-                    data: await getSettings("general"),
+                    data: data,
                });

            } catch (e) {
@ -1058,7 +1123,14 @@ let needSetup = false;
                }

                await setSettings("general", data);
-                exports.entryPage = data.entryPage;
+                server.entryPage = data.entryPage;
+
+                await CacheableDnsHttpAgent.update();
+
+                // Also need to apply timezone globally
+                if (data.serverTimezone) {
+                    await server.setTimezone(data.serverTimezone);
+                }

                callback({
                    ok: true,
@ -1066,6 +1138,7 @@ let needSetup = false;
                });

                sendInfo(socket);
+                server.sendMaintenanceList(socket);

            } catch (e) {
                callback({
@ -1254,6 +1327,7 @@ let needSetup = false;
                                authDomain: monitorListData[i].authDomain,
                                interval: monitorListData[i].interval,
                                retryInterval: retryInterval,
+                                resendInterval: monitorListData[i].resendInterval || 0,
                                hostname: monitorListData[i].hostname,
                                maxretries: monitorListData[i].maxretries,
                                port: monitorListData[i].port,
@ -1422,6 +1496,9 @@ let needSetup = false;
        cloudflaredSocketHandler(socket);
        databaseSocketHandler(socket);
        proxySocketHandler(socket);
+        dockerSocketHandler(socket);
+        maintenanceSocketHandler(socket);
+        generalSocketHandler(socket, server);

        log.debug("server", "added all socket handlers");

@ -1459,6 +1536,10 @@ let needSetup = false;
        if (testMode) {
            startUnitTest();
        }
+
+        if (e2eTestMode) {
+            startE2eTests();
+        }
    });

    initBackgroundJobs(args);
@ -1520,8 +1601,10 @@ async function afterLogin(socket, user) {
    socket.join(user.id);

    let monitorList = await server.sendMonitorList(socket);
+    server.sendMaintenanceList(socket);
    sendNotificationList(socket);
    sendProxyList(socket);
+    sendDockerHostList(socket);

    await sleep(500);

@ -1538,6 +1621,13 @@ async function afterLogin(socket, user) {
    for (let monitorID in monitorList) {
        await Monitor.sendStats(io, monitorID, user.id);
    }
+
+    // Set server timezone from client browser if not set
+    // It should be run once only
+    if (! await Settings.get("initServerTimezone")) {
+        log.debug("server", "emit initServerTimezone");
+        socket.emit("initServerTimezone");
+    }
 }

 /**
@ -1664,6 +1754,8 @@ async function shutdownFunction(signal) {
    log.info("server", "Shutdown requested");
    log.info("server", "Called signal: " + signal);

+    await server.stop();
+
    log.info("server", "Stopping all monitors");
    for (let id in server.monitorList) {
        let monitor = server.monitorList[id];
@ -1674,10 +1766,7 @@ async function shutdownFunction(signal) {

    stopBackgroundJobs();
    await cloudflaredStop();
-}
-
-function getClientIp(socket) {
-    return socket.client.conn.remoteAddress.replace(/^.*:/, "");
+    Settings.stopCacheCleaner();
 }

 /** Final function called before application exits */
--- a/server/settings.js
+++ b/server/settings.js
@ -0,0 +1,172 @@
+const { R } = require("redbean-node");
+const { log } = require("../src/util");
+
+class Settings {
+
+    /**
+     *  Example:
+     *      {
+     *         key1: {
+     *             value: "value2",
+     *             timestamp: 12345678
+     *         },
+     *         key2: {
+     *             value: 2,
+     *             timestamp: 12345678
+     *         },
+     *     }
+     * @type {{}}
+     */
+    static cacheList = {
+
+    };
+
+    static cacheCleaner = null;
+
+    /**
+     * Retrieve value of setting based on key
+     * @param {string} key Key of setting to retrieve
+     * @returns {Promise<any>} Value
+     */
+    static async get(key) {
+
+        // Start cache clear if not started yet
+        if (!Settings.cacheCleaner) {
+            Settings.cacheCleaner = setInterval(() => {
+                log.debug("settings", "Cache Cleaner is just started.");
+                for (key in Settings.cacheList) {
+                    if (Date.now() - Settings.cacheList[key].timestamp > 60 * 1000) {
+                        log.debug("settings", "Cache Cleaner deleted: " + key);
+                        delete Settings.cacheList[key];
+                    }
+                }
+
+            }, 60 * 1000);
+        }
+
+        // Query from cache
+        if (key in Settings.cacheList) {
+            const v = Settings.cacheList[key].value;
+            log.debug("settings", `Get Setting (cache): ${key}: ${v}`);
+            return v;
+        }
+
+        let value = await R.getCell("SELECT `value` FROM setting WHERE `key` = ? ", [
+            key,
+        ]);
+
+        try {
+            const v = JSON.parse(value);
+            log.debug("settings", `Get Setting: ${key}: ${v}`);
+
+            Settings.cacheList[key] = {
+                value: v,
+                timestamp: Date.now()
+            };
+
+            return v;
+        } catch (e) {
+            return value;
+        }
+    }
+
+    /**
+     * Sets the specified setting to specified value
+     * @param {string} key Key of setting to set
+     * @param {any} value Value to set to
+     * @param {?string} type Type of setting
+     * @returns {Promise<void>}
+     */
+    static async set(key, value, type = null) {
+
+        let bean = await R.findOne("setting", " `key` = ? ", [
+            key,
+        ]);
+        if (!bean) {
+            bean = R.dispense("setting");
+            bean.key = key;
+        }
+        bean.type = type;
+        bean.value = JSON.stringify(value);
+        await R.store(bean);
+
+        Settings.deleteCache([ key ]);
+    }
+
+    /**
+     * Get settings based on type
+     * @param {string} type The type of setting
+     * @returns {Promise<Bean>}
+     */
+    static async getSettings(type) {
+        let list = await R.getAll("SELECT `key`, `value` FROM setting WHERE `type` = ? ", [
+            type,
+        ]);
+
+        let result = {};
+
+        for (let row of list) {
+            try {
+                result[row.key] = JSON.parse(row.value);
+            } catch (e) {
+                result[row.key] = row.value;
+            }
+        }
+
+        return result;
+    }
+
+    /**
+     * Set settings based on type
+     * @param {string} type Type of settings to set
+     * @param {Object} data Values of settings
+     * @returns {Promise<void>}
+     */
+    static async setSettings(type, data) {
+        let keyList = Object.keys(data);
+
+        let promiseList = [];
+
+        for (let key of keyList) {
+            let bean = await R.findOne("setting", " `key` = ? ", [
+                key
+            ]);
+
+            if (bean == null) {
+                bean = R.dispense("setting");
+                bean.type = type;
+                bean.key = key;
+            }
+
+            if (bean.type === type) {
+                bean.value = JSON.stringify(data[key]);
+                promiseList.push(R.store(bean));
+            }
+        }
+
+        await Promise.all(promiseList);
+
+        Settings.deleteCache(keyList);
+    }
+
+    /**
+     *
+     * @param {string[]} keyList
+     */
+    static deleteCache(keyList) {
+        for (let key of keyList) {
+            delete Settings.cacheList[key];
+        }
+    }
+
+    static stopCacheCleaner() {
+        if (Settings.cacheCleaner) {
+            clearInterval(Settings.cacheCleaner);
+            Settings.cacheCleaner = null;
+        }
+    }
+}
+
+module.exports = {
+    Settings,
+};
--- a/server/socket-handlers/cloudflared-socket-handler.js
+++ b/server/socket-handlers/cloudflared-socket-handler.js
@ -1,6 +1,7 @@
 const { checkLogin, setSetting, setting, doubleCheckPassword } = require("../util-server");
 const { CloudflaredTunnel } = require("node-cloudflared-tunnel");
 const { UptimeKumaServer } = require("../uptime-kuma-server");
+const { log } = require("../../src/util");
 const io = UptimeKumaServer.getInstance().io;

 const prefix = "cloudflared_";
@ -63,7 +64,10 @@ module.exports.cloudflaredSocketHandler = (socket) => {
    socket.on(prefix + "stop", async (currentPassword, callback) => {
        try {
            checkLogin(socket);
-            await doubleCheckPassword(socket, currentPassword);
+            const disabledAuth = await setting("disableAuth");
+            if (!disabledAuth) {
+                await doubleCheckPassword(socket, currentPassword);
+            }
            cloudflared.stop();
        } catch (error) {
            callback({
@ -104,7 +108,7 @@ module.exports.autoStart = async (token) => {

 /** Stop cloudflared */
 module.exports.stop = async () => {
-    console.log("Stop cloudflared");
+    log.info("cloudflared", "Stop cloudflared");
    if (cloudflared) {
        cloudflared.stop();
    }
--- a/server/socket-handlers/docker-socket-handler.js
+++ b/server/socket-handlers/docker-socket-handler.js
@ -0,0 +1,79 @@
+const { sendDockerHostList } = require("../client");
+const { checkLogin } = require("../util-server");
+const { DockerHost } = require("../docker");
+const { log } = require("../../src/util");
+
+/**
+ * Handlers for docker hosts
+ * @param {Socket} socket Socket.io instance
+ */
+module.exports.dockerSocketHandler = (socket) => {
+    socket.on("addDockerHost", async (dockerHost, dockerHostID, callback) => {
+        try {
+            checkLogin(socket);
+
+            let dockerHostBean = await DockerHost.save(dockerHost, dockerHostID, socket.userID);
+            await sendDockerHostList(socket);
+
+            callback({
+                ok: true,
+                msg: "Saved",
+                id: dockerHostBean.id,
+            });
+
+        } catch (e) {
+            callback({
+                ok: false,
+                msg: e.message,
+            });
+        }
+    });
+
+    socket.on("deleteDockerHost", async (dockerHostID, callback) => {
+        try {
+            checkLogin(socket);
+
+            await DockerHost.delete(dockerHostID, socket.userID);
+            await sendDockerHostList(socket);
+
+            callback({
+                ok: true,
+                msg: "Deleted",
+            });
+
+        } catch (e) {
+            callback({
+                ok: false,
+                msg: e.message,
+            });
+        }
+    });
+
+    socket.on("testDockerHost", async (dockerHost, callback) => {
+        try {
+            checkLogin(socket);
+
+            let amount = await DockerHost.testDockerHost(dockerHost);
+            let msg;
+
+            if (amount >= 1) {
+                msg = "Connected Successfully. Amount of containers: " + amount;
+            } else {
+                msg = "Connected Successfully, but there are no containers?";
+            }
+
+            callback({
+                ok: true,
+                msg,
+            });
+
+        } catch (e) {
+            log.error("docker", e);
+
+            callback({
+                ok: false,
+                msg: e.message,
+            });
+        }
+    });
+};
--- a/server/socket-handlers/general-socket-handler.js
+++ b/server/socket-handlers/general-socket-handler.js
@ -0,0 +1,20 @@
+const { log } = require("../../src/util");
+const { Settings } = require("../settings");
+const { sendInfo } = require("../client");
+const { checkLogin } = require("../util-server");
+
+module.exports.generalSocketHandler = (socket, server) => {
+
+    socket.on("initServerTimezone", async (timezone) => {
+        try {
+            checkLogin(socket);
+            log.debug("generalSocketHandler", "Timezone: " + timezone);
+            await Settings.set("initServerTimezone", true);
+            await server.setTimezone(timezone);
+            await sendInfo(socket);
+        } catch (e) {
+            log.warn("initServerTimezone", e.message);
+        }
+    });
+
+};
--- a/server/socket-handlers/maintenance-socket-handler.js
+++ b/server/socket-handlers/maintenance-socket-handler.js
@ -0,0 +1,317 @@
+const { checkLogin } = require("../util-server");
+const { log } = require("../../src/util");
+const { R } = require("redbean-node");
+const apicache = require("../modules/apicache");
+const { UptimeKumaServer } = require("../uptime-kuma-server");
+const Maintenance = require("../model/maintenance");
+const server = UptimeKumaServer.getInstance();
+const MaintenanceTimeslot = require("../model/maintenance_timeslot");
+
+/**
+ * Handlers for Maintenance
+ * @param {Socket} socket Socket.io instance
+ */
+module.exports.maintenanceSocketHandler = (socket) => {
+    // Add a new maintenance
+    socket.on("addMaintenance", async (maintenance, callback) => {
+        try {
+            checkLogin(socket);
+
+            log.debug("maintenance", maintenance);
+
+            let bean = Maintenance.jsonToBean(R.dispense("maintenance"), maintenance);
+            bean.user_id = socket.userID;
+            let maintenanceID = await R.store(bean);
+            await MaintenanceTimeslot.generateTimeslot(bean);
+
+            await server.sendMaintenanceList(socket);
+
+            callback({
+                ok: true,
+                msg: "Added Successfully.",
+                maintenanceID,
+            });
+
+        } catch (e) {
+            callback({
+                ok: false,
+                msg: e.message,
+            });
+        }
+    });
+
+    // Edit a maintenance
+    socket.on("editMaintenance", async (maintenance, callback) => {
+        try {
+            checkLogin(socket);
+
+            let bean = await R.findOne("maintenance", " id = ? ", [ maintenance.id ]);
+
+            if (bean.user_id !== socket.userID) {
+                throw new Error("Permission denied.");
+            }
+
+            Maintenance.jsonToBean(bean, maintenance);
+
+            await R.store(bean);
+            await MaintenanceTimeslot.generateTimeslot(bean, null, true);
+
+            await server.sendMaintenanceList(socket);
+
+            callback({
+                ok: true,
+                msg: "Saved.",
+                maintenanceID: bean.id,
+            });
+
+        } catch (e) {
+            console.error(e);
+            callback({
+                ok: false,
+                msg: e.message,
+            });
+        }
+    });
+
+    // Add a new monitor_maintenance
+    socket.on("addMonitorMaintenance", async (maintenanceID, monitors, callback) => {
+        try {
+            checkLogin(socket);
+
+            await R.exec("DELETE FROM monitor_maintenance WHERE maintenance_id = ?", [
+                maintenanceID
+            ]);
+
+            for await (const monitor of monitors) {
+                let bean = R.dispense("monitor_maintenance");
+
+                bean.import({
+                    monitor_id: monitor.id,
+                    maintenance_id: maintenanceID
+                });
+                await R.store(bean);
+            }
+
+            apicache.clear();
+
+            callback({
+                ok: true,
+                msg: "Added Successfully.",
+            });
+
+        } catch (e) {
+            callback({
+                ok: false,
+                msg: e.message,
+            });
+        }
+    });
+
+    // Add a new monitor_maintenance
+    socket.on("addMaintenanceStatusPage", async (maintenanceID, statusPages, callback) => {
+        try {
+            checkLogin(socket);
+
+            await R.exec("DELETE FROM maintenance_status_page WHERE maintenance_id = ?", [
+                maintenanceID
+            ]);
+
+            for await (const statusPage of statusPages) {
+                let bean = R.dispense("maintenance_status_page");
+
+                bean.import({
+                    status_page_id: statusPage.id,
+                    maintenance_id: maintenanceID
+                });
+                await R.store(bean);
+            }
+
+            apicache.clear();
+
+            callback({
+                ok: true,
+                msg: "Added Successfully.",
+            });
+
+        } catch (e) {
+            callback({
+                ok: false,
+                msg: e.message,
+            });
+        }
+    });
+
+    socket.on("getMaintenance", async (maintenanceID, callback) => {
+        try {
+            checkLogin(socket);
+
+            log.debug("maintenance", `Get Maintenance: ${maintenanceID} User ID: ${socket.userID}`);
+
+            let bean = await R.findOne("maintenance", " id = ? AND user_id = ? ", [
+                maintenanceID,
+                socket.userID,
+            ]);
+
+            callback({
+                ok: true,
+                maintenance: await bean.toJSON(),
+            });
+
+        } catch (e) {
+            callback({
+                ok: false,
+                msg: e.message,
+            });
+        }
+    });
+
+    socket.on("getMaintenanceList", async (callback) => {
+        try {
+            checkLogin(socket);
+            await server.sendMaintenanceList(socket);
+            callback({
+                ok: true,
+            });
+        } catch (e) {
+            console.error(e);
+            callback({
+                ok: false,
+                msg: e.message,
+            });
+        }
+    });
+
+    socket.on("getMonitorMaintenance", async (maintenanceID, callback) => {
+        try {
+            checkLogin(socket);
+
+            log.debug("maintenance", `Get Monitors for Maintenance: ${maintenanceID} User ID: ${socket.userID}`);
+
+            let monitors = await R.getAll("SELECT monitor.id, monitor.name FROM monitor_maintenance mm JOIN monitor ON mm.monitor_id = monitor.id WHERE mm.maintenance_id = ? ", [
+                maintenanceID,
+            ]);
+
+            callback({
+                ok: true,
+                monitors,
+            });
+
+        } catch (e) {
+            console.error(e);
+            callback({
+                ok: false,
+                msg: e.message,
+            });
+        }
+    });
+
+    socket.on("getMaintenanceStatusPage", async (maintenanceID, callback) => {
+        try {
+            checkLogin(socket);
+
+            log.debug("maintenance", `Get Status Pages for Maintenance: ${maintenanceID} User ID: ${socket.userID}`);
+
+            let statusPages = await R.getAll("SELECT status_page.id, status_page.title FROM maintenance_status_page msp JOIN status_page ON msp.status_page_id = status_page.id WHERE msp.maintenance_id = ? ", [
+                maintenanceID,
+            ]);
+
+            callback({
+                ok: true,
+                statusPages,
+            });
+
+        } catch (e) {
+            console.error(e);
+            callback({
+                ok: false,
+                msg: e.message,
+            });
+        }
+    });
+
+    socket.on("deleteMaintenance", async (maintenanceID, callback) => {
+        try {
+            checkLogin(socket);
+
+            log.debug("maintenance", `Delete Maintenance: ${maintenanceID} User ID: ${socket.userID}`);
+
+            if (maintenanceID in server.maintenanceList) {
+                delete server.maintenanceList[maintenanceID];
+            }
+
+            await R.exec("DELETE FROM maintenance WHERE id = ? AND user_id = ? ", [
+                maintenanceID,
+                socket.userID,
+            ]);
+
+            apicache.clear();
+
+            callback({
+                ok: true,
+                msg: "Deleted Successfully.",
+            });
+
+            await server.sendMaintenanceList(socket);
+
+        } catch (e) {
+            callback({
+                ok: false,
+                msg: e.message,
+            });
+        }
+    });
+
+    socket.on("pauseMaintenance", async (maintenanceID, callback) => {
+        try {
+            checkLogin(socket);
+
+            log.debug("maintenance", `Pause Maintenance: ${maintenanceID} User ID: ${socket.userID}`);
+
+            await R.exec("UPDATE maintenance SET active = 0 WHERE id = ? ", [
+                maintenanceID,
+            ]);
+
+            apicache.clear();
+
+            callback({
+                ok: true,
+                msg: "Paused Successfully.",
+            });
+
+            await server.sendMaintenanceList(socket);
+
+        } catch (e) {
+            callback({
+                ok: false,
+                msg: e.message,
+            });
+        }
+    });
+
+    socket.on("resumeMaintenance", async (maintenanceID, callback) => {
+        try {
+            checkLogin(socket);
+
+            log.debug("maintenance", `Resume Maintenance: ${maintenanceID} User ID: ${socket.userID}`);
+
+            await R.exec("UPDATE maintenance SET active = 1 WHERE id = ? ", [
+                maintenanceID,
+            ]);
+
+            apicache.clear();
+
+            callback({
+                ok: true,
+                msg: "Resume Successfully",
+            });
+
+            await server.sendMaintenanceList(socket);
+
+        } catch (e) {
+            callback({
+                ok: false,
+                msg: e.message,
+            });
+        }
+    });
+};
--- a/server/socket-handlers/status-page-socket-handler.js
+++ b/server/socket-handlers/status-page-socket-handler.js
@ -202,6 +202,11 @@ module.exports.statusPageSocketHandler = (socket) => {
                    relationBean.weight = monitorOrder++;
                    relationBean.group_id = groupBean.id;
                    relationBean.monitor_id = monitor.id;
+
+                    if (monitor.sendUrl !== undefined) {
+                        relationBean.send_url = monitor.sendUrl;
+                    }
+
                    await R.store(relationBean);
                }

--- a/server/uptime-cache-list.js
+++ b/server/uptime-cache-list.js
@ -0,0 +1,49 @@
+const { log } = require("../src/util");
+class UptimeCacheList {
+    /**
+     * list[monitorID][duration]
+     */
+    static list = {};
+
+    /**
+     * Get the uptime for a specific period
+     * @param {number} monitorID
+     * @param {number} duration
+     * @return {number}
+     */
+    static getUptime(monitorID, duration) {
+        if (UptimeCacheList.list[monitorID] && UptimeCacheList.list[monitorID][duration]) {
+            log.debug("UptimeCacheList", "getUptime: " + monitorID + " " + duration);
+            return UptimeCacheList.list[monitorID][duration];
+        } else {
+            return null;
+        }
+    }
+
+    /**
+     * Add uptime for specified monitor
+     * @param {number} monitorID
+     * @param {number} duration
+     * @param {number} uptime Uptime to add
+     */
+    static addUptime(monitorID, duration, uptime) {
+        log.debug("UptimeCacheList", "addUptime: " + monitorID + " " + duration);
+        if (!UptimeCacheList.list[monitorID]) {
+            UptimeCacheList.list[monitorID] = {};
+        }
+        UptimeCacheList.list[monitorID][duration] = uptime;
+    }
+
+    /**
+     * Clear cache for specified monitor
+     * @param {number} monitorID
+     */
+    static clearCache(monitorID) {
+        log.debug("UptimeCacheList", "clearCache: " + monitorID);
+        delete UptimeCacheList.list[monitorID];
+    }
+}
+
+module.exports = {
+    UptimeCacheList,
+};
--- a/Show more
+++ b/Show more