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  <div class="section" id="wslay-the-websocket-library">
<h1>Wslay - The WebSocket library<a class="headerlink" href="#wslay-the-websocket-library" title="Permalink to this headline">ΒΆ</a></h1>
<p>Wslay is a WebSocket library written in C.
It implements the protocol version 13 described in
<a class="reference external" href="http://tools.ietf.org/html/rfc6455">RFC 6455</a>.
This library offers 2 levels of API:
event-based API and frame-based low-level API. For event-based API, it
is suitable for non-blocking reactor pattern style. You can set
callbacks in various events. For frame-based API, you can send
WebSocket frame directly. Wslay only supports data transfer part of
WebSocket protocol and does not perform opening handshake in HTTP.</p>
<p>Wslay supports:</p>
<ul class="simple">
<li>Text/Binary messages.</li>
<li>Automatic ping reply.</li>
<li>Callback interface.</li>
<li>External event loop.</li>
</ul>
<p>Wslay does not perform any I/O operations for its own. Instead, it
offers callbacks for them. This makes Wslay independent on any I/O
frameworks, SSL, sockets, etc.  This makes Wslay protable across
various platforms and the application authors can choose freely I/O
frameworks.</p>
<p>See Autobahn test reports:
<a class="reference external" href="http://wslay.sourceforge.net/autobahn/reports/servers/index.html">server</a>
and
<a class="reference external" href="http://wslay.sourceforge.net/autobahn/reports/clients/index.html">client</a>.</p>
<p>This project is hosted at <a class="reference external" href="https://github.com/tatsuhiro-t/wslay">https://github.com/tatsuhiro-t/wslay</a></p>
<p>Contents:</p>
<div class="toctree-wrapper compound">
<ul>
<li class="toctree-l1"><a class="reference internal" href="tutorial.html">Tutorial</a><ul>
<li class="toctree-l2"><a class="reference internal" href="tutorial.html#websocket-echo-server">WebSocket Echo Server</a></li>
</ul>
</li>
<li class="toctree-l1"><a class="reference internal" href="api_reference.html">API Reference</a><ul>
<li class="toctree-l2"><a class="reference internal" href="man/wslay_event_context_server_init.html">wslay_event_context_server_init, wslay_event_context_client_init, wslay_event_context_free</a></li>
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<li class="toctree-l2"><a class="reference internal" href="man/wslay_event_config_set_max_recv_msg_length.html">wslay_event_config_set_max_recv_msg_length</a></li>
<li class="toctree-l2"><a class="reference internal" href="man/wslay_event_config_set_callbacks.html">wslay_event_config_set_callbacks</a></li>
<li class="toctree-l2"><a class="reference internal" href="man/wslay_event_config_set_allowed_rsv_bits.html">wslay_event_config_set_allowed_rsv_bits</a></li>
<li class="toctree-l2"><a class="reference internal" href="man/wslay_event_queue_close.html">wslay_event_queue_close</a></li>
<li class="toctree-l2"><a class="reference internal" href="man/wslay_event_queue_fragmented_msg.html">wslay_event_queue_fragmented_msg, wslay_event_queue_fragmented_msg_ex</a></li>
<li class="toctree-l2"><a class="reference internal" href="man/wslay_event_queue_msg.html">wslay_event_queue_msg, wslay_event_queue_msg_ex</a></li>
<li class="toctree-l2"><a class="reference internal" href="man/wslay_event_recv.html">wslay_event_recv</a></li>
<li class="toctree-l2"><a class="reference internal" href="man/wslay_event_send.html">wslay_event_send</a></li>
<li class="toctree-l2"><a class="reference internal" href="man/wslay_event_set_error.html">wslay_event_set_error</a></li>
<li class="toctree-l2"><a class="reference internal" href="man/wslay_event_want_read.html">wslay_event_want_read</a></li>
<li class="toctree-l2"><a class="reference internal" href="man/wslay_event_want_write.html">wslay_event_want_write</a></li>
<li class="toctree-l2"><a class="reference internal" href="man/wslay_event_get_read_enabled.html">wslay_event_get_read_enabled</a></li>
<li class="toctree-l2"><a class="reference internal" href="man/wslay_event_get_write_enabled.html">wslay_event_get_write_enabled</a></li>
<li class="toctree-l2"><a class="reference internal" href="man/wslay_event_shutdown_read.html">wslay_event_shutdown_read</a></li>
<li class="toctree-l2"><a class="reference internal" href="man/wslay_event_shutdown_write.html">wslay_event_shutdown_write</a></li>
<li class="toctree-l2"><a class="reference internal" href="man/wslay_event_get_close_received.html">wslay_event_get_close_received</a></li>
<li class="toctree-l2"><a class="reference internal" href="man/wslay_event_get_close_sent.html">wslay_event_get_close_sent</a></li>
<li class="toctree-l2"><a class="reference internal" href="man/wslay_event_get_status_code_received.html">wslay_event_get_status_code_received</a></li>
<li class="toctree-l2"><a class="reference internal" href="man/wslay_event_get_status_code_sent.html">wslay_event_get_status_code_sent</a></li>
<li class="toctree-l2"><a class="reference internal" href="man/wslay_event_get_queued_msg_count.html">wslay_event_get_queued_msg_count</a></li>
<li class="toctree-l2"><a class="reference internal" href="man/wslay_event_get_queued_msg_length.html">wslay_event_get_queued_msg_length</a></li>
</ul>
</li>
</ul>
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