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nats.docs/_examples/subscribe_sync.html
2019-06-07 11:12:14 -05:00

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<input type="radio" id="subscribe_sync_go" name="subscribe_sync" class="tab" checked>
<label for="subscribe_sync_go" class="api-lang" data-language="go">Go</label>
<input type="radio" id="subscribe_sync_java" name="subscribe_sync" class="tab">
<label for="subscribe_sync_java" class="api-lang" data-language="java">Java</label>
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<input type="radio" id="subscribe_sync_py" name="subscribe_sync" class="tab">
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<input type="radio" id="subscribe_sync_ruby" name="subscribe_sync" class="tab">
<label for="subscribe_sync_ruby" class="api-lang" data-language="ruby">Ruby</label>
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<pre id="subscribe_sync_go_content"><a class="toolbar-icons pull-right" target="_blank" href="https://github.com/nats-io/go-nats-examples/blob/master/api-examples/subscribe_sync/main.go#L11-35"><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()
// Subscribe
sub, err := nc.SubscribeSync(&#34;updates&#34;)
if err != nil {
log.Fatal(err)
}
// Wait for a message
msg, err := sub.NextMsg(10 * time.Second)
if err != nil {
log.Fatal(err)
}
// Use the response
log.Printf(&#34;Reply: %s&#34;, msg.Data)
// Close the connection
nc.Close()
</code></pre>
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<pre id="subscribe_sync_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/SubscribeSync.java#L15-29"><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-java">Connection nc = Nats.connect(&#34;nats://demo.nats.io:4222&#34;);
// Subscribe
Subscription sub = nc.subscribe(&#34;updates&#34;);
// Read a message
Message msg = sub.nextMessage(Duration.ZERO);
String str = new String(msg.getData(), StandardCharsets.UTF_8);
System.out.println(str);
// Close the connection
nc.close();
</code></pre>
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<pre id="subscribe_sync_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#L273-275"><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">// node-nats subscriptions are always async.
</code></pre>
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<pre id="subscribe_sync_py_content"><a class="toolbar-icons pull-right" target="_blank" href="https://github.com/nats-io/asyncio-nats-examples/blob/master/notapplicable.txt#L9-11"><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"># Asyncio NATS client currently does not have a sync subscribe API
</code></pre>
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<pre id="subscribe_sync_ruby_content"><a class="toolbar-icons pull-right" target="_blank" href="https://github.com/nats-io/ruby-nats-examples/blob/master/notapplicable.txt#L13-15"><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"># The Ruby NATS client subscriptions are all async.
</code></pre>
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<pre id="subscribe_sync_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#L238-240"><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">// ts-nats subscriptions are always async.
</code></pre>
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</div>