nats.docs/docs/developer/examples/unsubscribe_auto.html

<div class="tab-wrap">
  	
	
	<input type="radio" id="unsubscribe_auto_go" name="unsubscribe_auto" class="tab" checked>
	
	<label for="unsubscribe_auto_go" class="api-lang" data-language="go">Go</label>
	
	
	<input type="radio" id="unsubscribe_auto_java" name="unsubscribe_auto" class="tab">
	
	<label for="unsubscribe_auto_java" class="api-lang" data-language="java">Java</label>
	
	
	<input type="radio" id="unsubscribe_auto_js" name="unsubscribe_auto" class="tab">
	
	<label for="unsubscribe_auto_js" class="api-lang" data-language="js">JavaScript</label>
	
	
	<input type="radio" id="unsubscribe_auto_py" name="unsubscribe_auto" class="tab">
	
	<label for="unsubscribe_auto_py" class="api-lang" data-language="py">Python</label>
	
	
	<input type="radio" id="unsubscribe_auto_ruby" name="unsubscribe_auto" class="tab">
	
	<label for="unsubscribe_auto_ruby" class="api-lang" data-language="ruby">Ruby</label>
	
	
	<input type="radio" id="unsubscribe_auto_ts" name="unsubscribe_auto" class="tab">
	
	<label for="unsubscribe_auto_ts" class="api-lang" data-language="ts">TypeScript</label>
	

  	
	<div class="tab__content">
	<pre id="unsubscribe_auto_go_content"><a class="toolbar-icons pull-right" target="_blank" href="https://github.com/nats-io/go-nats-examples/blob/master/api-examples/unsubscribe_auto/main.go#L10-37"><i class="mdi mdi-github-circle" title="View on GitHub"></i></a><a class="toolbar-icons pull-right"><i class="mdi mdi-content-copy js-copy" title="Copy to Clipboard"></i></a><span class="copy-msg pull-right"></span><code class="language-go">nc, err := nats.Connect(&#34;demo.nats.io&#34;)
if err != nil {
	log.Fatal(err)
}
defer nc.Close()

// Sync Subscription
sub, err := nc.SubscribeSync(&#34;updates&#34;)
if err != nil {
	log.Fatal(err)
}
if err := sub.AutoUnsubscribe(1); err != nil {
	log.Fatal(err)
}

// Async Subscription
sub, err = nc.Subscribe(&#34;updates&#34;, func(_ *nats.Msg) {})
if err != nil {
	log.Fatal(err)
}
if err := sub.AutoUnsubscribe(1); err != nil {
	log.Fatal(err)
}

// Close the connection
nc.Close()
</code></pre>
	</div>
	
	<div class="tab__content">
	<pre id="unsubscribe_auto_java_content"><a class="toolbar-icons pull-right" target="_blank" href="https://github.com/nats-io/java-nats-examples/blob/master/src/main/java/io/nats/examples/AutoUnsubscribe.java#L14-31"><i class="mdi mdi-github-circle" title="View on GitHub"></i></a><a class="toolbar-icons pull-right"><i class="mdi mdi-content-copy js-copy" title="Copy to Clipboard"></i></a><span class="copy-msg pull-right"></span><code class="language-java">Connection nc = Nats.connect(&#34;nats://demo.nats.io:4222&#34;);
Dispatcher d = nc.createDispatcher((msg) -&gt; {
    String str = new String(msg.getData(), StandardCharsets.UTF_8);
    System.out.println(str);
});

// Sync Subscription
Subscription sub = nc.subscribe(&#34;updates&#34;);
sub.unsubscribe(1);

// Async Subscription
d.subscribe(&#34;updates&#34;);
d.unsubscribe(&#34;updates&#34;, 1);

// Close the connection
nc.close();
</code></pre>
	</div>
	
	<div class="tab__content">
	<pre id="unsubscribe_auto_js_content"><a class="toolbar-icons pull-right" target="_blank" href="https://github.com/nats-io/node-nats-examples/blob/master/src/subscriber_samples.js#L105-120"><i class="mdi mdi-github-circle" title="View on GitHub"></i></a><a class="toolbar-icons pull-right"><i class="mdi mdi-content-copy js-copy" title="Copy to Clipboard"></i></a><span class="copy-msg pull-right"></span><code class="language-javascript">// `max` specifies the number of messages that the server will forward.
// The server will auto-cancel.
let opts = {max: 10};
let sub = nc.subscribe(NATS.createInbox(), opts, (msg) =&gt; {
    t.log(msg);
});

// another way after 10 messages
let sub2 = nc.subscribe(NATS.createInbox(), (err, msg) =&gt; {
    t.log(msg.data);
});
// if the subscription already received 10 messages, the handler
// won&#39;t get any more messages
nc.unsubscribe(sub2, 10);
</code></pre>
	</div>
	
	<div class="tab__content">
	<pre id="unsubscribe_auto_py_content"><a class="toolbar-icons pull-right" target="_blank" href="https://github.com/nats-io/asyncio-nats-examples/blob/master/unsubscribe_auto.py#L6-21"><i class="mdi mdi-github-circle" title="View on GitHub"></i></a><a class="toolbar-icons pull-right"><i class="mdi mdi-content-copy js-copy" title="Copy to Clipboard"></i></a><span class="copy-msg pull-right"></span><code class="language-python">nc = NATS()

await nc.connect(servers=[&#34;nats://demo.nats.io:4222&#34;])

async def cb(msg):
  print(msg)

sid = await nc.subscribe(&#34;updates&#34;, cb=cb)
await nc.auto_unsubscribe(sid, 1)
await nc.publish(&#34;updates&#34;, b&#39;All is Well&#39;)

# Won&#39;t be received...
await nc.publish(&#34;updates&#34;, b&#39;...&#39;)

</code></pre>
	</div>
	
	<div class="tab__content">
	<pre id="unsubscribe_auto_ruby_content"><a class="toolbar-icons pull-right" target="_blank" href="https://github.com/nats-io/ruby-nats-examples/blob/master/unsubscribe_auto.rb#L1-25"><i class="mdi mdi-github-circle" title="View on GitHub"></i></a><a class="toolbar-icons pull-right"><i class="mdi mdi-content-copy js-copy" title="Copy to Clipboard"></i></a><span class="copy-msg pull-right"></span><code class="language-ruby">require &#39;nats/client&#39;
require &#39;fiber&#39;

NATS.start(servers:[&#34;nats://127.0.0.1:4222&#34;]) do |nc|
  Fiber.new do
    f = Fiber.current

    nc.subscribe(&#34;time&#34;, max: 1) do |msg, reply|
      f.resume Time.now
    end

    nc.publish(&#34;time&#34;, &#39;What is the time?&#39;, NATS.create_inbox)

    # Use the response
    msg = Fiber.yield
    puts &#34;Reply: #{msg}&#34;

    # Won&#39;t be received
    nc.publish(&#34;time&#34;, &#39;What is the time?&#39;, NATS.create_inbox)

  end.resume
end

</code></pre>
	</div>
	
	<div class="tab__content">
	<pre id="unsubscribe_auto_ts_content"><a class="toolbar-icons pull-right" target="_blank" href="https://github.com/nats-io/ts-nats-examples/blob/master/src/subscriber_samples.ts#L94-109"><i class="mdi mdi-github-circle" title="View on GitHub"></i></a><a class="toolbar-icons pull-right"><i class="mdi mdi-content-copy js-copy" title="Copy to Clipboard"></i></a><span class="copy-msg pull-right"></span><code class="language-javascript">// `max` specifies the number of messages that the server will forward.
// The server will auto-cancel.
let opts = {max: 10};
let sub = await nc.subscribe(createInbox(), (err, msg) =&gt; {
    t.log(msg.data);
}, opts);

// another way after 10 messages
let sub2 = await nc.subscribe(createInbox(), (err, msg) =&gt; {
    t.log(msg.data);
});
// if the subscription already received 10 messages, the handler
// won&#39;t get any more messages
sub2.unsubscribe(10);
</code></pre>
	</div>
	
</div>