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158 lines
6.7 KiB
HTML
158 lines
6.7 KiB
HTML
<!DOCTYPE html>
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<html lang="en">
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<meta charset="UTF-8">
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<title>ntfy.sh | simple HTTP-based pub-sub</title>
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<meta property="og:title" content="ntfy.sh | simple HTTP-based pub-sub" />
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<meta property="og:description" content="ntfy is a simple HTTP-based pub-sub notification service. It allows you to send desktop notifications via scripts from any computer, entirely without signup or cost. Made with ❤ by Philipp C. Heckel, Apache License 2.0, source at https://heckel.io/ntfy." />
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<meta property="og:url" content="https://ntfy.sh" />
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<body>
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<div id="main">
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<h1>ntfy.sh - simple HTTP-based pub-sub</h1>
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<p>
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<b>ntfy</b> (pronounce: <i>notify</i>) is a simple HTTP-based <a href="https://en.wikipedia.org/wiki/Publish%E2%80%93subscribe_pattern">pub-sub</a> notification service.
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It allows you to send <b>desktop notifications via scripts from any computer</b>, entirely <b>without signup or cost</b>.
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It's also <a href="https://github.com/binwiederhier/ntfy">open source</a> if you want to run your own.
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</p>
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<p id="error"></p>
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<h2>Subscribe to a topic</h2>
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<p>
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Topics are created on the fly by subscribing to them. You can create and subscribe to a topic either in this web UI, or in
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your own app by subscribing to an <a href="https://developer.mozilla.org/en-US/docs/Web/API/EventSource">EventSource</a>,
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a JSON feed, or raw feed.
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</p>
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<p>
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Because there is no sign-up, <b>the topic is essentially a password</b>, so pick something that's not easily guessable.
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</p>
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<h3>Subscribe via web</h3>
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<p>
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If you subscribe to a topic via this web UI in the field below, messages published to any subscribed topic
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will show up as <b>desktop notification</b>.
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</p>
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<form id="subscribeForm">
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<p>
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<label for="topicField">Subscribe to topic:</label>
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<input type="text" id="topicField" placeholder="Letters, numbers, _ and -" pattern="[-_A-Za-z]{1,64}" />
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<input type="submit" id="subscribeButton" value="Subscribe" />
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</p>
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</form>
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<p id="topicsHeader">Topics:</p>
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<ul id="topicsList"></ul>
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<audio id="notifySound" src="static/sound/mixkit-message-pop-alert-2354.mp3"></audio>
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<h3>Subscribe via your app, or via the CLI</h3>
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<p class="smallMarginBottom">
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Using <a href="https://developer.mozilla.org/en-US/docs/Web/API/EventSource">EventSource</a>, you can consume
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notifications like this (see <a href="https://github.com/binwiederhier/ntfy/tree/main/examples">full example</a>):
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</p>
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<code>
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const eventSource = new EventSource('https://ntfy.sh/mytopic/sse');<br/>
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eventSource.onmessage = (e) => {<br/>
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// Do something with e.data<br/>
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};
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</code>
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<p class="smallMarginBottom">
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Or you can use <tt>curl</tt> or any other HTTP library. Here's an example for the <tt>/json</tt> endpoint,
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which prints one JSON message per line (keepalive and open messages have an "event" field):
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</p>
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<code>
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$ curl -s ntfy.sh/mytopic/json<br/>
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{"time":1635359841,"event":"open"}<br/>
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{"time":1635359844,"message":"This is a notification"}<br/>
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{"time":1635359851,"event":"keepalive"}
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</code>
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<p class="smallMarginBottom">
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Using the <tt>/sse</tt> endpoint (SSE, server-sent events stream):
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</p>
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<code>
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$ curl -s ntfy.sh/mytopic/sse<br/>
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event: open<br/>
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data: {"time":1635359796,"event":"open"}<br/><br/>
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data: {"time":1635359803,"message":"This is a notification"}<br/><br/>
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event: keepalive<br/>
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data: {"time":1635359806,"event":"keepalive"}
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</code>
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<p class="smallMarginBottom">
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Using the <tt>/raw</tt> endpoint (empty lines are keepalive messages):
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</p>
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<code>
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$ curl -s ntfy.sh/mytopic/raw<br/>
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<br/>
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This is a notification
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</code>
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<h2>Publishing messages</h2>
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<p class="smallMarginBottom">
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Publishing messages can be done via PUT or POST using. Here's an example using <tt>curl</tt>:
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</p>
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<code>
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curl -d "long process is done" ntfy.sh/mytopic
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</code>
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<p class="smallMarginBottom">
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Here's an example in JS with <tt>fetch()</tt> (see <a href="https://github.com/binwiederhier/ntfy/tree/main/examples">full example</a>):
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</p>
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<code>
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fetch('https://ntfy.sh/mytopic', {<br/>
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method: 'POST', // PUT works too<br/>
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body: 'Hello from the other side.'<br/>
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})
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</code>
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<p>
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Messages published to a non-existing topic or a topic without subscribers will not be delivered later.
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There is (currently) no buffering of any kind. If you're not listening, the message won't be delivered.
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</p>
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<h2>FAQ</h2>
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<p>
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<b>Isn't this like ...?</b><br/>
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Who knows. I didn't do a lot of research before making this. It was fun making it.
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</p>
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<p>
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<b>Can I use this in my app? Will it stay free?</b><br/>
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Yes. As long as you don't abuse it, it'll be available and free of charge. I do not plan on monetizing
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the service.
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</p>
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<p>
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<b>What are the uptime guarantees?</b><br/>
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Best effort.
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</p>
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<p>
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<b>Will you know what topics exist, can you spy on me?</b><br/>
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If you don't trust me or your messages are sensitive, run your own server. It's <a href="https://github.com/binwiederhier/ntfy">open source</a>.
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That said, the logs do not contain any topic names or other details about you. Check the code if you don't believe me.
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</p>
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<center id="ironicCenterTagDontFreakOut"><i>Made with ❤️ by <a href="https://heckel.io">Philipp C. Heckel</a></i></center>
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</div>
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<script src="static/js/app.js"></script>
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</body>
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</html>
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