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<h1 class="lined-header"><span>Gun Function Reference</span></h1>
<h2 id="_name">Name</h2>
<p>gun - HTTP/1.1, HTTP/2 and Websocket client for Erlang/OTP</p>
<h2 id="_description">Description</h2>
<p>Gun is an HTTP client for Erlang/OTP with support for the HTTP/1.1, HTTP/2 and Websocket protocols.</p>
<p>Gun aims to provide an easy to use, asynchronous and always-connected client. It maintains a permanent connection to the server and reconnects automatically when necessary.</p>
<h2 id="_modules">Modules</h2>
<ul><li><a href="gun">gun(3)</a> - Asynchronous HTTP client
</li>
<li><a href="gun_cookies">gun_cookies(3)</a> - Cookie store engine
</li>
<li><a href="gun_cookies_list">gun_cookies_list(3)</a> - Cookie store backend: in-memory, per connection
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<h2 id="_dependencies">Dependencies</h2>
<ul><li><a href="cowlib_app">cowlib(7)</a> - Support library for manipulating Web protocols
</li>
<li>ssl - Secure communication over sockets
</li>
</ul>
<p>All these applications must be started before the <code>gun</code> application. To start Gun and all dependencies at once:</p>
<div class="listingblock"><div class="content"><!-- Generator: GNU source-highlight 3.1.9
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
<pre><tt>{<font color="#FF6600">ok</font>, <font color="#990000">_</font>} <font color="#990000">=</font> <b><font color="#000000">application:ensure_all_started</font></b>(<font color="#FF6600">gun</font>)<font color="#990000">.</font></tt></pre>
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<h2 id="_environment">Environment</h2>
<p>The <code>gun</code> application does not define any application environment configuration parameters.</p>
<h2 id="_see_also">See also</h2>
<p><a href="cowlib_app">cowlib(7)</a></p>
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<h3>
Gun
2.0
Function Reference
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<li><a href="/docs/en/gun/2.0/guide">User Guide</a></li>
<li><a href="/docs/en/gun/2.0/manual">Function Reference</a></li>
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<h4>Version select</h4>
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<li><a href="/docs/en/gun/2.0/manual">2.0</a></li>
<li><a href="/docs/en/gun/1.3/manual">1.3</a></li>
<li><a href="/docs/en/gun/1.2/manual">1.2</a></li>
<li><a href="/docs/en/gun/1.1/manual">1.1</a></li>
<li><a href="/docs/en/gun/1.0/manual">1.0</a></li>
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<p>Donate to Loïc Hoguin because his work on Cowboy, Ranch, Gun and Erlang.mk is fantastic:</p>
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