nats.docs/_examples/flush.html

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	<pre id="flush_go_content"><a class="toolbar-icons pull-right" target="_blank" href="https://github.com/nats-io/go-nats-examples/blob/master/api-examples/flush/main.go#L11-29"><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()

// Just to not collide using the demo server with other users.
subject := nats.NewInbox()

if err := nc.Publish(subject, []byte(&#34;All is Well&#34;)); err != nil {
	log.Fatal(err)
}
// Sends a PING and wait for a PONG from the server, up to the given timeout.
// This gives guarantee that the server has processed the above message.
if err := nc.FlushTimeout(time.Second); err != nil {
	log.Fatal(err)
}
</code></pre>
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	<pre id="flush_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/Flush.java#L13-20"><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;);

nc.publish(&#34;updates&#34;, &#34;All is Well&#34;.getBytes(StandardCharsets.UTF_8));
nc.flush(Duration.ofSeconds(1)); // Flush the message queue

nc.close();
</code></pre>
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	<pre id="flush_js_content"><a class="toolbar-icons pull-right" target="_blank" href="https://github.com/nats-io/node-nats-examples/blob/master/src/publisher_samples.js#L91-101"><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">let nc = NATS.connect({url: &#34;nats://demo.nats.io:4222&#34;});
let start = Date.now();
nc.flush(() =&gt; {
    t.log(&#39;round trip completed in&#39;, Date.now() - start, &#39;ms&#39;);
});

nc.publish(&#39;foo&#39;);
// function in flush is optional
nc.flush();
</code></pre>
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	<pre id="flush_py_content"><a class="toolbar-icons pull-right" target="_blank" href="https://github.com/nats-io/asyncio-nats-examples/blob/master/flush.py#L6-17"><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;])

await nc.publish(&#34;updates&#34;, b&#39;All is Well&#39;)

# Sends a PING and wait for a PONG from the server, up to the given timeout.
# This gives guarantee that the server has processed above message.
await nc.flush(timeout=1)

</code></pre>
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	<pre id="flush_ruby_content"><a class="toolbar-icons pull-right" target="_blank" href="https://github.com/nats-io/ruby-nats-examples/blob/master/flush.rb#L1-18"><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|
  nc.subscribe(&#34;updates&#34;) do |msg|
    puts msg
  end

  nc.publish(&#34;updates&#34;, &#34;All is Well&#34;)

  nc.flush do
    # Sends a PING and wait for a PONG from the server, up to the given timeout.
    # This gives guarantee that the server has processed above message at this point.
  end
end

</code></pre>
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	<pre id="flush_ts_content"><a class="toolbar-icons pull-right" target="_blank" href="https://github.com/nats-io/ts-nats-examples/blob/master/src/publisher_samples.ts#L87-105"><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">let nc = await connect({
    url: &#34;nats://demo.nats.io:4222&#34;
});

// you can use flush to trigger a function in your
// application once the round-trip to the server finishes
let start = Date.now();
nc.flush(() =&gt; {
    t.log(&#39;round trip completed in&#39;, Date.now() - start, &#39;ms&#39;);
});

nc.publish(&#39;foo&#39;);

// another way, simply wait for the promise to resolve
await nc.flush();

nc.close();
</code></pre>
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