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Introduction
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What's New in 2.0
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What is NATS
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Subject-Based Messaging
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Publish-Subscribe
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Request-Reply
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Queue Groups
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Acknowledgements
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<a href="../concepts/seq_num.html">
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Sequence Numbers
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</a>
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<li class="header">Developing With NATS</li>
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<a href="../">
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Introduction
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Connecting
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Connecting to the Default Server
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</a>
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Connecting to a Specific Server
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Connecting to a Cluster
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</a>
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<li class="chapter " data-level="3.2.4" data-path="../connecting/connect_timeout.html">
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<a href="../connecting/connect_timeout.html">
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Setting a Connect Timeout
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</a>
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<li class="chapter " data-level="3.2.5" data-path="../connecting/pingpong.html">
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Ping/Pong Protocol
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</a>
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Controlling the Client/Server Protocol
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<a href="../connecting/noecho.html">
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Turning Off Echo'd Messages
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</a>
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</li>
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</ul>
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<li class="chapter " data-level="3.3" data-path="../reconnect/intro.html">
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<a href="../reconnect/intro.html">
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Automatic Reconnections
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</a>
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<a href="../reconnect/disable.html">
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Disabling Reconnect
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</a>
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<li class="chapter " data-level="3.3.2" data-path="../reconnect/max.html">
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<a href="../reconnect/max.html">
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Set the Number of Reconnect Attempts
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</a>
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</li>
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<li class="chapter " data-level="3.3.3" data-path="../reconnect/wait.html">
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<a href="../reconnect/wait.html">
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Pausing Between Reconnect Attempts
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</a>
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</li>
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<li class="chapter " data-level="3.3.4" data-path="../reconnect/random.html">
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<a href="../reconnect/random.html">
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Avoiding the Thundering Herd
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</a>
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</li>
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<li class="chapter " data-level="3.3.5" data-path="../reconnect/events.html">
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<a href="../reconnect/events.html">
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Listening for Reconnect Events
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</a>
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</li>
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<li class="chapter " data-level="3.3.6" data-path="../reconnect/buffer.html">
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<a href="../reconnect/buffer.html">
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Buffering Messages During Reconnect Attempts
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</a>
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</li>
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</ul>
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<li class="chapter " data-level="3.4" data-path="../security/intro.html">
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<a href="../security/intro.html">
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Securing Connections
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</a>
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<ul class="articles">
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<li class="chapter " data-level="3.4.1" data-path="../security/userpass.html">
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<a href="../security/userpass.html">
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Authenticating with a User and Password
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</a>
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</li>
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<li class="chapter " data-level="3.4.2" data-path="../security/token.html">
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<a href="../security/token.html">
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Authenticating with a Token
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</a>
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</li>
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<li class="chapter " data-level="3.4.3" data-path="../security/nkey.html">
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<a href="../security/nkey.html">
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Authenticating with an NKey
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</a>
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</li>
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<li class="chapter " data-level="3.4.4" data-path="../security/creds.html">
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<a href="../security/creds.html">
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Authenticating with a Credentials File
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</a>
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</li>
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<li class="chapter " data-level="3.4.5" data-path="../security/tls.html">
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<a href="../security/tls.html">
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Encrypting Connections with TLS
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</a>
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</li>
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</ul>
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</li>
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<li class="chapter active" data-level="3.5" data-path="intro.html">
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<a href="intro.html">
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Receiving Messages
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</a>
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<ul class="articles">
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<li class="chapter " data-level="3.5.1" data-path="sync.html">
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<a href="sync.html">
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Synchronous Subscriptions
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</a>
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</li>
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<li class="chapter " data-level="3.5.2" data-path="async.html">
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<a href="async.html">
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Asynchronous Subscriptions
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</a>
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</li>
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<li class="chapter " data-level="3.5.3" data-path="unsubscribing.html">
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<a href="unsubscribing.html">
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Unsubscribing
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</a>
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</li>
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<li class="chapter " data-level="3.5.4" data-path="unsub_after.html">
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<a href="unsub_after.html">
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Unsubscribing After N Messages
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</a>
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</li>
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<li class="chapter " data-level="3.5.5" data-path="reply.html">
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<a href="reply.html">
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Replying to a Message
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</a>
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</li>
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<li class="chapter " data-level="3.5.6" data-path="wildcards.html">
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<a href="wildcards.html">
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Wildcard Subscriptions
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</a>
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</li>
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<li class="chapter " data-level="3.5.7" data-path="queues.html">
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<a href="queues.html">
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Queue Subscriptions
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</a>
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</li>
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<li class="chapter " data-level="3.5.8" data-path="drain.html">
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<a href="drain.html">
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Draining Messages Before Disconnect
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</a>
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</li>
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<li class="chapter " data-level="3.5.9" data-path="structure.html">
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<a href="structure.html">
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Structured Data
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</a>
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</li>
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</ul>
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</li>
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<li class="chapter " data-level="3.6" data-path="../sending/intro.html">
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<a href="../sending/intro.html">
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Sending Messages
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</a>
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<ul class="articles">
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<li class="chapter " data-level="3.6.1" data-path="../sending/replyto.html">
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<a href="../sending/replyto.html">
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Including a Reply Subject
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</a>
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</li>
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<li class="chapter " data-level="3.6.2" data-path="../sending/request_reply.html">
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<a href="../sending/request_reply.html">
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Request-Reply Semantics
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</a>
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</li>
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<li class="chapter " data-level="3.6.3" data-path="../sending/caches.html">
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<a href="../sending/caches.html">
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Caches, Flush and Ping
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</a>
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</li>
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<li class="chapter " data-level="3.6.4" data-path="../sending/structure.html">
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<a href="../sending/structure.html">
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Sending Structured Data
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</a>
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</li>
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</ul>
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</li>
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<li class="chapter " data-level="3.7" data-path="../events/intro.html">
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<a href="../events/intro.html">
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Monitoring the Connection
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</a>
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<ul class="articles">
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<li class="chapter " data-level="3.7.1" data-path="../events/events.html">
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<a href="../events/events.html">
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Listen for Connection Events
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</a>
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</li>
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<li class="chapter " data-level="3.7.2" data-path="../events/slow.html">
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<a href="../events/slow.html">
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Slow Consumers
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</a>
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</li>
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</ul>
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</li>
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<li class="chapter " data-level="3.8" data-path="../tutorials/intro.html">
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<a href="../tutorials/intro.html">
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Tutorials
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</a>
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<ul class="articles">
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<li class="chapter " data-level="3.8.1" data-path="../tutorials/pubsub.html">
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<a href="../tutorials/pubsub.html">
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Explore NATS Pub/Sub
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</a>
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</li>
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<li class="chapter " data-level="3.8.2" data-path="../tutorials/reqreply.html">
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<a href="../tutorials/reqreply.html">
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Explore NATS Request/Reply
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</a>
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</li>
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<li class="chapter " data-level="3.8.3" data-path="../tutorials/queues.html">
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<a href="../tutorials/queues.html">
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Explore NATS Queueing
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</a>
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</li>
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<li class="chapter " data-level="3.8.4" data-path="../tutorials/custom_dialer.html">
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<a href="../tutorials/custom_dialer.html">
|
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Advanced Connect and Custom Dialer in Go
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</a>
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</li>
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</ul>
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</li>
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<li class="header">NATS Server</li>
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<li class="chapter " data-level="4.1" data-path="../../nats_server/installation.html">
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<a href="../../nats_server/installation.html">
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Installing
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</a>
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</li>
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<li class="chapter " data-level="4.2" data-path="../../nats_server/running.html">
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<a href="../../nats_server/running.html">
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Running
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</a>
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<ul class="articles">
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<li class="chapter " data-level="4.2.1" data-path="../../nats_server/windows_srv.html">
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<a href="../../nats_server/windows_srv.html">
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Window Service
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</a>
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</li>
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</ul>
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</li>
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<li class="chapter " data-level="4.3" data-path="../../nats_server/clients.html">
|
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<a href="../../nats_server/clients.html">
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|
Clients
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</a>
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</li>
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<li class="chapter " data-level="4.4" data-path="../../nats_server/flags.html">
|
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|
<a href="../../nats_server/flags.html">
|
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|
Flags
|
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</a>
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</li>
|
|
|
|
<li class="chapter " data-level="4.5" data-path="../../nats_server/configuration.html">
|
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<a href="../../nats_server/configuration.html">
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|
Configuration
|
|
|
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</a>
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|
<ul class="articles">
|
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|
|
<li class="chapter " data-level="4.5.1" data-path="../../nats_server/securing_nats.html">
|
|
|
|
<a href="../../nats_server/securing_nats.html">
|
|
|
|
|
|
Securing NATS
|
|
|
|
</a>
|
|
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<ul class="articles">
|
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|
<li class="chapter " data-level="4.5.1.1" data-path="../../nats_server/tls.html">
|
|
|
|
<a href="../../nats_server/tls.html">
|
|
|
|
|
|
Enabling TLS
|
|
|
|
</a>
|
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|
|
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</li>
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|
|
|
<li class="chapter " data-level="4.5.1.2" data-path="../../nats_server/auth_intro.html">
|
|
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|
<a href="../../nats_server/auth_intro.html">
|
|
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|
|
|
Authentication
|
|
|
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</a>
|
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<ul class="articles">
|
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|
|
<li class="chapter " data-level="4.5.1.2.1" data-path="../../nats_server/tokens.html">
|
|
|
|
<a href="../../nats_server/tokens.html">
|
|
|
|
|
|
Tokens
|
|
|
|
</a>
|
|
|
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|
|
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</li>
|
|
|
|
<li class="chapter " data-level="4.5.1.2.2" data-path="../../nats_server/username_password.html">
|
|
|
|
<a href="../../nats_server/username_password.html">
|
|
|
|
|
|
Username/Password
|
|
|
|
</a>
|
|
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|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="4.5.1.2.3" data-path="../../nats_server/tls_mutual_auth.html">
|
|
|
|
<a href="../../nats_server/tls_mutual_auth.html">
|
|
|
|
|
|
TLS Authentication
|
|
|
|
</a>
|
|
|
|
|
|
|
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</li>
|
|
|
|
<li class="chapter " data-level="4.5.1.2.4" data-path="../../nats_server/nkey_auth.html">
|
|
|
|
<a href="../../nats_server/nkey_auth.html">
|
|
|
|
|
|
NKeys
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="4.5.1.2.5" data-path="../../nats_server/accounts.html">
|
|
|
|
<a href="../../nats_server/accounts.html">
|
|
|
|
|
|
Accounts
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="4.5.1.2.6" data-path="../../nats_server/jwt_auth.html">
|
|
|
|
<a href="../../nats_server/jwt_auth.html">
|
|
|
|
|
|
JWTs
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="4.5.1.2.7" data-path="../../nats_server/auth_timeout.html">
|
|
|
|
<a href="../../nats_server/auth_timeout.html">
|
|
|
|
|
|
Authentication Timeout
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
|
|
</ul>
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="4.5.1.3" data-path="../../nats_server/authorization.html">
|
|
|
|
<a href="../../nats_server/authorization.html">
|
|
|
|
|
|
Authorization
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
|
|
</ul>
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="4.5.2" data-path="../../nats_server/clustering.html">
|
|
|
|
<a href="../../nats_server/clustering.html">
|
|
|
|
|
|
Clustering
|
|
|
|
</a>
|
|
|
|
|
|
|
|
<ul class="articles">
|
|
|
|
|
|
<li class="chapter " data-level="4.5.2.1" data-path="../../nats_server/cluster_config.html">
|
|
|
|
<a href="../../nats_server/cluster_config.html">
|
|
|
|
|
|
Configuration
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="4.5.2.2" data-path="../../nats_server/cluster_tls.html">
|
|
|
|
<a href="../../nats_server/cluster_tls.html">
|
|
|
|
|
|
TLS Authentication
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
|
|
</ul>
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="4.5.3" data-path="../../gateways/">
|
|
|
|
<a href="../../gateways/">
|
|
|
|
|
|
Gateways
|
|
|
|
</a>
|
|
|
|
|
|
|
|
<ul class="articles">
|
|
|
|
|
|
<li class="chapter " data-level="4.5.3.1" data-path="../../gateways/gateway.html">
|
|
|
|
<a href="../../gateways/gateway.html">
|
|
|
|
|
|
Configuration
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
|
|
</ul>
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="4.5.4" data-path="../../leafnodes/">
|
|
|
|
<a href="../../leafnodes/">
|
|
|
|
|
|
Leaf Nodes
|
|
|
|
</a>
|
|
|
|
|
|
|
|
<ul class="articles">
|
|
|
|
|
|
<li class="chapter " data-level="4.5.4.1" data-path="../../leafnodes/leafnode_conf.html">
|
|
|
|
<a href="../../leafnodes/leafnode_conf.html">
|
|
|
|
|
|
Configuration
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
|
|
</ul>
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="4.5.5" data-path="../../nats_server/logging.html">
|
|
|
|
<a href="../../nats_server/logging.html">
|
|
|
|
|
|
Logging
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="4.5.6" data-path="../../nats_server/monitoring.html">
|
|
|
|
<a href="../../nats_server/monitoring.html">
|
|
|
|
|
|
Monitoring
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
|
|
</ul>
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="4.6" data-path="../../nats_admin/">
|
|
|
|
<a href="../../nats_admin/">
|
|
|
|
|
|
Managing A NATS Server
|
|
|
|
</a>
|
|
|
|
|
|
|
|
<ul class="articles">
|
|
|
|
|
|
<li class="chapter " data-level="4.6.1" data-path="../../nats_admin/upgrading_cluster.html">
|
|
|
|
<a href="../../nats_admin/upgrading_cluster.html">
|
|
|
|
|
|
Upgrading a Cluster
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="4.6.2" data-path="../../nats_admin/slow_consumers.html">
|
|
|
|
<a href="../../nats_admin/slow_consumers.html">
|
|
|
|
|
|
Slow Consumers
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="4.6.3" data-path="../../nats_admin/signals.html">
|
|
|
|
<a href="../../nats_admin/signals.html">
|
|
|
|
|
|
Signals
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="4.6.4" data-path="../../sys_accounts/">
|
|
|
|
<a href="../../sys_accounts/">
|
|
|
|
|
|
System Accounts
|
|
|
|
</a>
|
|
|
|
|
|
|
|
<ul class="articles">
|
|
|
|
|
|
<li class="chapter " data-level="4.6.4.1" data-path="../../sys_accounts/sys_accounts.html">
|
|
|
|
<a href="../../sys_accounts/sys_accounts.html">
|
|
|
|
|
|
Configuration
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
|
|
</ul>
|
|
|
|
</li>
|
|
|
|
|
|
</ul>
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="4.7" data-path="../../nats_docker/">
|
|
|
|
<a href="../../nats_docker/">
|
|
|
|
|
|
NATS and Docker
|
|
|
|
</a>
|
|
|
|
|
|
|
|
<ul class="articles">
|
|
|
|
|
|
<li class="chapter " data-level="4.7.1" data-path="../../nats_docker/tutorial.html">
|
|
|
|
<a href="../../nats_docker/tutorial.html">
|
|
|
|
|
|
Tutorial
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="4.7.2" data-path="../../nats_docker/docker_swarm.html">
|
|
|
|
<a href="../../nats_docker/docker_swarm.html">
|
|
|
|
|
|
Docker Swarm
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
|
|
</ul>
|
|
|
|
</li>
|
|
|
|
|
|
|
|
|
|
<li class="header">NATS Tools</li>
|
|
|
|
|
|
|
|
<li class="chapter " data-level="5.1" data-path="../../nats_tools/mkpasswd.html">
|
|
|
|
<a href="../../nats_tools/mkpasswd.html">
|
|
|
|
|
|
mkpasswd
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="5.2" data-path="../../nats_tools/nk.html">
|
|
|
|
<a href="../../nats_tools/nk.html">
|
|
|
|
|
|
nk
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="5.3" data-path="../../nats_tools/nsc/">
|
|
|
|
<a href="../../nats_tools/nsc/">
|
|
|
|
|
|
nsc
|
|
|
|
</a>
|
|
|
|
|
|
|
|
<ul class="articles">
|
|
|
|
|
|
<li class="chapter " data-level="5.3.1" data-path="../../nats_tools/nsc/nsc.html">
|
|
|
|
<a href="../../nats_tools/nsc/nsc.html">
|
|
|
|
|
|
Basics
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="5.3.2" data-path="../../nats_tools/nsc/streams.html">
|
|
|
|
<a href="../../nats_tools/nsc/streams.html">
|
|
|
|
|
|
Streams
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="5.3.3" data-path="../../nats_tools/nsc/services.html">
|
|
|
|
<a href="../../nats_tools/nsc/services.html">
|
|
|
|
|
|
Services
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="5.3.4" data-path="../../nats_tools/nsc/signing_keys.html">
|
|
|
|
<a href="../../nats_tools/nsc/signing_keys.html">
|
|
|
|
|
|
Signing Keys
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
|
|
</ul>
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="5.4" data-path="../../nats_tools/nas/">
|
|
|
|
<a href="../../nats_tools/nas/">
|
|
|
|
|
|
nats-account-server
|
|
|
|
</a>
|
|
|
|
|
|
|
|
<ul class="articles">
|
|
|
|
|
|
<li class="chapter " data-level="5.4.1" data-path="../../nats_tools/nas/nas_conf.html">
|
|
|
|
<a href="../../nats_tools/nas/nas_conf.html">
|
|
|
|
|
|
Basics
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="5.4.2" data-path="../../nats_tools/nas/inspecting_jwts.html">
|
|
|
|
<a href="../../nats_tools/nas/inspecting_jwts.html">
|
|
|
|
|
|
Inspecting JWTs
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="5.4.3" data-path="../../nats_tools/nas/mem_resolver.html">
|
|
|
|
<a href="../../nats_tools/nas/mem_resolver.html">
|
|
|
|
|
|
Memory Resolver
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
|
|
</ul>
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="5.5" data-path="../../nats_tools/nats_top/">
|
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<a href="../../nats_tools/nats_top/">
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nats-top
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</a>
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<ul class="articles">
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<li class="chapter " data-level="5.5.1" data-path="../../nats_tools/nats_top/tutorial.html">
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<a href="../../nats_tools/nats_top/tutorial.html">
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Tutorial
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</a>
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</li>
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</ul>
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</li>
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<li class="chapter " data-level="5.6" data-path="../../nats_tools/natsbench.html">
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<a href="../../nats_tools/natsbench.html">
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nats-bench
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</a>
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</li>
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<li class="header">NATS Streaming Concepts</li>
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<li class="chapter " data-level="6.1" data-path="../../nats_streaming/intro.html">
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<a href="../../nats_streaming/intro.html">
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Introduction
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</a>
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<ul class="articles">
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<li class="chapter " data-level="6.1.1" data-path="../../nats_streaming/relation-to-nats.html">
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<a href="../../nats_streaming/relation-to-nats.html">
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Relation to NATS
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</a>
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</li>
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</ul>
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</li>
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<li class="chapter " data-level="6.2" data-path="../../nats_streaming/client-connections.html">
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<a href="../../nats_streaming/client-connections.html">
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Client Connections
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</a>
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</li>
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<li class="chapter " data-level="6.3" data-path="../../nats_streaming/channels/channels.html">
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<a href="../../nats_streaming/channels/channels.html">
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Channels
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</a>
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<ul class="articles">
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<li class="chapter " data-level="6.3.1" data-path="../../nats_streaming/channels/message-log.html">
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<a href="../../nats_streaming/channels/message-log.html">
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Message Log
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</a>
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</li>
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<li class="chapter " data-level="6.3.2" data-path="../../nats_streaming/channels/subscriptions/subscriptions.html">
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<a href="../../nats_streaming/channels/subscriptions/subscriptions.html">
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Subscriptions
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</a>
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<ul class="articles">
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<li class="chapter " data-level="6.3.2.1" data-path="../../nats_streaming/channels/subscriptions/regular.html">
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<a href="../../nats_streaming/channels/subscriptions/regular.html">
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Regular
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</a>
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</li>
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<li class="chapter " data-level="6.3.2.2" data-path="../../nats_streaming/channels/subscriptions/durable.html">
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<a href="../../nats_streaming/channels/subscriptions/durable.html">
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Durable
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</a>
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</li>
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<li class="chapter " data-level="6.3.2.3" data-path="../../nats_streaming/channels/subscriptions/queue-group.html">
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<a href="../../nats_streaming/channels/subscriptions/queue-group.html">
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Queue Group
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</a>
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</li>
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<li class="chapter " data-level="6.3.2.4" data-path="../../nats_streaming/channels/subscriptions/redelivery.html">
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<a href="../../nats_streaming/channels/subscriptions/redelivery.html">
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Redelivery
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</a>
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</li>
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</ul>
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</li>
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</ul>
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</li>
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<li class="chapter " data-level="6.4" data-path="../../nats_streaming/store-interface.html">
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<a href="../../nats_streaming/store-interface.html">
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Store Interface
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</a>
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</li>
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<li class="chapter " data-level="6.5" data-path="../../nats_streaming/store-encryption.html">
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<a href="../../nats_streaming/store-encryption.html">
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Store Encryption
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</a>
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</li>
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<li class="chapter " data-level="6.6" data-path="../../nats_streaming/clustering/clustering.html">
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<a href="../../nats_streaming/clustering/clustering.html">
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Clustering
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</a>
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<ul class="articles">
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<li class="chapter " data-level="6.6.1" data-path="../../nats_streaming/clustering/supported-stores.html">
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<a href="../../nats_streaming/clustering/supported-stores.html">
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Supported Stores
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</a>
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</li>
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<li class="chapter " data-level="6.6.2" data-path="../../nats_streaming/clustering/configuration.html">
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<a href="../../nats_streaming/clustering/configuration.html">
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Configuration
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</a>
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</li>
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<li class="chapter " data-level="6.6.3" data-path="../../nats_streaming/clustering/auto-configuration.html">
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<a href="../../nats_streaming/clustering/auto-configuration.html">
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Auto Configuration
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</a>
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</li>
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<li class="chapter " data-level="6.6.4" data-path="../../nats_streaming/clustering/containers.html">
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<a href="../../nats_streaming/clustering/containers.html">
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Containers
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</a>
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</li>
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</ul>
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</li>
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<li class="chapter " data-level="6.7" data-path="../../nats_streaming/fault-tolerance/ft.html">
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<a href="../../nats_streaming/fault-tolerance/ft.html">
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Fault Tolerance
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</a>
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<ul class="articles">
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<li class="chapter " data-level="6.7.1" data-path="../../nats_streaming/fault-tolerance/active-server.html">
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<a href="../../nats_streaming/fault-tolerance/active-server.html">
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Active Server
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</a>
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</li>
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<li class="chapter " data-level="6.7.2" data-path="../../nats_streaming/fault-tolerance/standby-server.html">
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<a href="../../nats_streaming/fault-tolerance/standby-server.html">
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Standby Servers
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</a>
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</li>
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<li class="chapter " data-level="6.7.3" data-path="../../nats_streaming/fault-tolerance/shared-state.html">
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<a href="../../nats_streaming/fault-tolerance/shared-state.html">
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Shared State
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</a>
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</li>
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<li class="chapter " data-level="6.7.4" data-path="../../nats_streaming/fault-tolerance/failover.html">
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<a href="../../nats_streaming/fault-tolerance/failover.html">
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Failover
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</a>
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</li>
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</ul>
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</li>
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<li class="chapter " data-level="6.8" data-path="../../nats_streaming/partitioning.html">
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<a href="../../nats_streaming/partitioning.html">
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Partitioning
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</a>
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</li>
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<li class="header">Developing With NATS Streaming</li>
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<li class="chapter " data-level="7.1" data-path="../streaming/">
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<a href="../streaming/">
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Introduction
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</a>
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</li>
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<li class="chapter " data-level="7.2" data-path="../streaming/connecting.html">
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<a href="../streaming/connecting.html">
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Connecting to NATS Streaming
|
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</a>
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</li>
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<li class="chapter " data-level="7.3" data-path="../streaming/publishing.html">
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<a href="../streaming/publishing.html">
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|
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Publishing to a Channel
|
|
|
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</a>
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</li>
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<li class="chapter " data-level="7.4" data-path="../streaming/receiving.html">
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<a href="../streaming/receiving.html">
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Receiving Messages from a Channel
|
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|
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</a>
|
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</li>
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<li class="chapter " data-level="7.5" data-path="../streaming/durables.html">
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<a href="../streaming/durables.html">
|
|
|
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|
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Durable Subscriptions
|
|
|
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</a>
|
|
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</li>
|
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|
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<li class="chapter " data-level="7.6" data-path="../streaming/queues.html">
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<a href="../streaming/queues.html">
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|
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Queue Subscriptions
|
|
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</a>
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</li>
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<li class="chapter " data-level="7.7" data-path="../streaming/acks.html">
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<a href="../streaming/acks.html">
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Acknowledgements
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</a>
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</li>
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<li class="chapter " data-level="7.8" data-path="../streaming/protocol.html">
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<a href="../streaming/protocol.html">
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The Streaming Protocol
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</a>
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</li>
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<li class="header">NATS Streaming Server</li>
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<li class="chapter " data-level="8.1" data-path="../../nats_streaming/gettingstarted/install.html">
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<a href="../../nats_streaming/gettingstarted/install.html">
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Installing
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</a>
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</li>
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<li class="chapter " data-level="8.2" data-path="../../nats_streaming/gettingstarted/run.html">
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<a href="../../nats_streaming/gettingstarted/run.html">
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Running
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</a>
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</li>
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<li class="chapter " data-level="8.3" data-path="../../nats_streaming/gettingstarted/configuring.html">
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<a href="../../nats_streaming/gettingstarted/configuring.html">
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Configuring
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</a>
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</li>
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<li class="chapter " data-level="8.4" data-path="../../nats_streaming/gettingstarted/tls.html">
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<a href="../../nats_streaming/gettingstarted/tls.html">
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Securing
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</a>
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</li>
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<li class="chapter " data-level="8.5" data-path="../../nats_streaming/gettingstarted/process-signaling.html">
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<a href="../../nats_streaming/gettingstarted/process-signaling.html">
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Process Signaling
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</a>
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</li>
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<li class="chapter " data-level="8.6" data-path="../../nats_streaming/gettingstarted/windows-service.html">
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<a href="../../nats_streaming/gettingstarted/windows-service.html">
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Windows Service
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</a>
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</li>
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<li class="chapter " data-level="8.7" data-path="../streaming/embedding.html">
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<a href="../streaming/embedding.html">
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Embedding NATS Streaming Server
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</a>
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</li>
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<li class="chapter " data-level="8.8" data-path="../../nats_streaming/swarm.html">
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<a href="../../nats_streaming/swarm.html">
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Docker Swarm
|
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</a>
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</li>
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<li class="chapter " data-level="8.9" data-path="../../nats_streaming/monitoring/monitoring.html">
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<a href="../../nats_streaming/monitoring/monitoring.html">
|
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Monitoring
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</a>
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<ul class="articles">
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<li class="chapter " data-level="8.9.1" data-path="../../nats_streaming/monitoring/enabling.html">
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<a href="../../nats_streaming/monitoring/enabling.html">
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Enabling
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</a>
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</li>
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<li class="chapter " data-level="8.9.2" data-path="../../nats_streaming/monitoring/endpoints.html">
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<a href="../../nats_streaming/monitoring/endpoints.html">
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Endpoints
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</a>
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</li>
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</ul>
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</li>
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<li class="header">NATS Protocol</li>
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<li class="chapter " data-level="9.1" data-path="../../nats_protocol/nats-protocol-demo.html">
|
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|
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<a href="../../nats_protocol/nats-protocol-demo.html">
|
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Protocol Demo
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</a>
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</li>
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<li class="chapter " data-level="9.2" data-path="../../nats_protocol/nats-protocol.html">
|
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|
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<a href="../../nats_protocol/nats-protocol.html">
|
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Client Protocol
|
|
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</a>
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<ul class="articles">
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<li class="chapter " data-level="9.2.1" data-path="../../nats_protocol/nats-client-dev.html">
|
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|
<a href="../../nats_protocol/nats-client-dev.html">
|
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Developing a Client
|
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</a>
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</li>
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</ul>
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</li>
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<li class="chapter " data-level="9.3" data-path="../../nats_protocol/nats-server-protocol.html">
|
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<a href="../../nats_protocol/nats-server-protocol.html">
|
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|
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NATS Cluster Protocol
|
|
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</a>
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</li>
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<li class="divider"></li>
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<li>
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<a href="https://www.gitbook.com" target="blank" class="gitbook-link">
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Published with GitBook
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</a>
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</li>
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</ul>
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</nav>
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<section class="normal markdown-section">
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<h1 id="receiving-messages"><a name="receiving-messages" class="plugin-anchor" href="#receiving-messages"><i class="fa fa-link" aria-hidden="true"></i></a>Receiving Messages</h1>
|
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<p>Receiving messages with NATS can be very library dependent.</p>
|
|
<p>Some languages, like Go or Java, provide synchronous and asynchronous APIs, while others may only support one type of subscription.</p>
|
|
<p>In all cases, the process of subscribing involves having the client library tell the NATS server that an application is interested in a particular subject.</p>
|
|
<p>Under the covers, the client library will assign a unique id to each subscription. This id is used when the server sends messages to a specific subscription. Each subscription gets a unique id, so if the same connection is used multiple times for the same subject, the server will send multiple copies of the same message. When an application is done with a subscription it unsubscribes which tells the server to stop sending messages.</p>
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</body>
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</html>
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