summaryrefslogblamecommitdiffstats
path: root/docs/en/ranch/1.5/manual/ranch_protocol/index.html
blob: fbbb8f6194b1dda25b737f0b879862ab89c819c4 (plain) (tree)
1
2
3
4
5
6
7
8
9
10
11
12











                                                                                                                      
                                                   















































































































                                                                                                                                                                                                                                                                                                                                                      

                                                                    

                                                                    

                                                                    



                                                                    

     











                                                                                                                                                                   
                                                                                                                                                                                                                                  


 





























                                                                                                                                                                                                                           
<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="">
    <meta name="author" content="Loïc Hoguin based on a design from (Soft10) Pol Cámara">

    <title>Nine Nines: ranch_protocol(3)</title>

    <link href='https://fonts.googleapis.com/css?family=Open+Sans:400,700,400italic' rel='stylesheet' type='text/css'>
    <link href="/css/99s.css?r=6" rel="stylesheet">

    <link rel="shortcut icon" href="/img/ico/favicon.ico">
    <link rel="apple-touch-icon-precomposed" sizes="114x114" href="/img/ico/apple-touch-icon-114.png">
    <link rel="apple-touch-icon-precomposed" sizes="72x72" href="/img/ico/apple-touch-icon-72.png">
    <link rel="apple-touch-icon-precomposed" href="/img/ico/apple-touch-icon-57.png">

    
</head>


<body class="">
  <header id="page-head">
    <div id="topbar" class="container">
        <div class="row">
          <div class="span2">
            <h1 id="logo"><a href="/" title="99s">99s</a></h1>
          </div>
          <div class="span10">
            
            <div id="side-header">
              <nav>
                <ul>
                  <li><a title="Hear my thoughts" href="/articles">Articles</a></li>
  				  <li><a title="Watch my talks" href="/talks">Talks</a></li>
  				  <li class="active"><a title="Read the docs" href="/docs">Documentation</a></li>
  				  <li><a title="Request my services" href="/services">Consulting & Training</a></li>
                </ul>
              </nav> 
              <ul id="social">
                <li>
                  <a href="https://github.com/ninenines" title="Check my Github repositories"><img src="/img/ico_github.png" data-hover="/img/ico_github_alt.png" alt="Github"></a>
                </li>
                    <li>
						<a title="Contact me" href="mailto:[email protected]"><img src="/img/ico_mail.png" data-hover="/img/ico_mail_alt.png"></a>
					</li>
              </ul>
            </div>
          </div>
        </div>
    </div>


</header>

<div id="contents" class="two_col">
<div class="container">
<div class="row">
<div id="docs" class="span9 maincol">

<h1 class="lined-header"><span>ranch_protocol(3)</span></h1>

<h2 id="_name">Name</h2>
<p>ranch_protocol - behaviour for protocol modules</p>
<h2 id="_description">Description</h2>
<p>The <code>ranch_protocol</code> behaviour defines the interface used by Ranch protocols.</p>
<h2 id="_types">Types</h2>
<p>None.</p>
<h2 id="_callbacks">Callbacks</h2>
<h3 id="_start_link_ref__socket__transport__protoopts______ok__pid_______ok__pid____pid">start_link(Ref, Socket, Transport, ProtoOpts) -&gt; {ok, pid()} | {ok, pid(), pid()}</h3>
<dl><dt>Ref = ranch:ref()</dt>
<dd><p>Listener name.</p>
</dd>
<dt>Socket = any()</dt>
<dd><p>Socket for this connection.</p>
</dd>
<dt>Transport = module()</dt>
<dd><p>Transport module for this socket.</p>
</dd>
<dt>ProtoOpts = any()</dt>
<dd><p>Protocol options.</p>
</dd>
</dl>
<p>Start a new connection process for the given socket.</p>
<p>The only purpose of this callback is to start a process that will handle the socket. It must spawn the process, link and then return the new pid. This function will always be called from inside a supervisor.</p>
<p>This callback can also return two pids. The first pid is the pid of the process that will be supervised. The second pid is the pid of the process that will receive ownership of the socket. This second process must be a child of the first. This form is only available when <code>connection_type</code> is set to <code>supervisor</code>.</p>
<p>If any other value is returned, the supervisor will close the socket and assume no process has been started.</p>
<p>Do not perform any operations in this callback, as this would block the supervisor responsible for starting connection processes and degrade performance severely.</p>






</div>

<div class="span3 sidecol">


<h3>
	Ranch
	1.5
	Function Reference
	
</h3>

<ul>
	
		<li><a href="/docs/en/ranch/1.5/guide">User Guide</a></li>
	
	
		<li><a href="/docs/en/ranch/1.5/manual">Function Reference</a></li>
	
	
</ul>

<h4 id="docs-nav">Navigation</h4>

<h4>Version select</h4>
<ul>
	
	
	
		<li><a href="/docs/en/ranch/2.0/manual">2.0</a></li>
	
		<li><a href="/docs/en/ranch/1.7/manual">1.7</a></li>
	
		<li><a href="/docs/en/ranch/1.6/manual">1.6</a></li>
	
		<li><a href="/docs/en/ranch/1.5/manual">1.5</a></li>
	
		<li><a href="/docs/en/ranch/1.4/manual">1.4</a></li>
	
</ul>

<h3 id="_like_my_work__donate">Like my work? Donate!</h3>
<p>Donate to Loïc Hoguin because his work on Cowboy, Ranch, Gun and Erlang.mk is fantastic:</p>
<form action="https://www.paypal.com/cgi-bin/webscr" method="post" style="display:inline">
<input type="hidden" name="cmd" value="_donations">
<input type="hidden" name="business" value="[email protected]">
<input type="hidden" name="lc" value="FR">
<input type="hidden" name="item_name" value="Loic Hoguin">
<input type="hidden" name="item_number" value="99s">
<input type="hidden" name="currency_code" value="EUR">
<input type="hidden" name="bn" value="PP-DonationsBF:btn_donate_LG.gif:NonHosted">
<input type="image" src="https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif" border="0" name="submit" alt="PayPal - The safer, easier way to pay online!">
<img alt="" border="0" src="https://www.paypalobjects.com/fr_FR/i/scr/pixel.gif" width="1" height="1">
</form><p>Recurring payment options are also available via <a href="https://github.com/sponsors/essen">GitHub Sponsors</a>. These funds are used to cover the recurring expenses like food, dedicated servers or domain names.</p>



</div>
</div>
</div>
</div>

      <footer>
        <div class="container">
          <div class="row">
            <div class="span6">
              <p id="scroll-top"><a href="#">↑ Scroll to top</a></p>
              <nav>
                <ul>
                  <li><a href="mailto:[email protected]" title="Contact us">Contact us</a></li><li><a href="https://github.com/ninenines/ninenines.github.io" title="Github repository">Contribute to this site</a></li>
                </ul>
              </nav>
            </div>
            <div class="span6 credits">
               <p><img src="/img/footer_logo.png"></p>
               <p>Copyright &copy; Loïc Hoguin 2012-2018</p>
            </div>
          </div>
        </div>
      </footer>

    
    <script src="/js/custom.js"></script>
  </body>
</html>