• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
1<html>
2<head>
3<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
4<title>websocket::stream::accept (6 of 6 overloads)</title>
5<link rel="stylesheet" href="../../../../../../../../doc/src/boostbook.css" type="text/css">
6<meta name="generator" content="DocBook XSL Stylesheets V1.79.1">
7<link rel="home" href="../../../../index.html" title="Chapter 1. Boost.Beast">
8<link rel="up" href="../accept.html" title="websocket::stream::accept">
9<link rel="prev" href="overload5.html" title="websocket::stream::accept (5 of 6 overloads)">
10<link rel="next" href="../async_accept.html" title="websocket::stream::async_accept">
11</head>
12<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
13<table cellpadding="2" width="100%"><tr>
14<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../../../../../boost.png"></td>
15<td align="center"><a href="../../../../../../../../index.html">Home</a></td>
16<td align="center"><a href="../../../../../../../../libs/libraries.htm">Libraries</a></td>
17<td align="center"><a href="http://www.boost.org/users/people.html">People</a></td>
18<td align="center"><a href="http://www.boost.org/users/faq.html">FAQ</a></td>
19<td align="center"><a href="../../../../../../../../more/index.htm">More</a></td>
20</tr></table>
21<hr>
22<div class="spirit-nav">
23<a accesskey="p" href="overload5.html"><img src="../../../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../accept.html"><img src="../../../../../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="../async_accept.html"><img src="../../../../../../../../doc/src/images/next.png" alt="Next"></a>
24</div>
25<div class="section">
26<div class="titlepage"><div><div><h6 class="title">
27<a name="beast.ref.boost__beast__websocket__stream.accept.overload6"></a><a class="link" href="overload6.html" title="websocket::stream::accept (6 of 6 overloads)">websocket::stream::accept
28          (6 of 6 overloads)</a>
29</h6></div></div></div>
30<p>
31            Respond to a WebSocket HTTP Upgrade request.
32          </p>
33<h7><a name="beast.ref.boost__beast__websocket__stream.accept.overload6.h0"></a>
34            <span class="phrase"><a name="beast.ref.boost__beast__websocket__stream.accept.overload6.synopsis"></a></span><a class="link" href="overload6.html#beast.ref.boost__beast__websocket__stream.accept.overload6.synopsis">Synopsis</a>
35          </h7><pre class="programlisting"><span class="keyword">template</span><span class="special">&lt;</span>
36    <span class="keyword">class</span> <a class="link" href="../../../concepts/Body.html" title="Body"><span class="emphasis"><em>Body</em></span></a><span class="special">,</span>
37    <span class="keyword">class</span> <a href="https://en.cppreference.com/w/cpp/named_req/Allocator" target="_top"><span class="emphasis"><em>Allocator</em></span></a><span class="special">&gt;</span>
38<span class="keyword">void</span>
39<span class="identifier">accept</span><span class="special">(</span>
40    <span class="identifier">http</span><span class="special">::</span><span class="identifier">request</span><span class="special">&lt;</span> <span class="identifier">Body</span><span class="special">,</span> <span class="identifier">http</span><span class="special">::</span><span class="identifier">basic_fields</span><span class="special">&lt;</span> <span class="identifier">Allocator</span> <span class="special">&gt;&gt;</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">req</span><span class="special">,</span>
41    <span class="identifier">error_code</span><span class="special">&amp;</span> <span class="identifier">ec</span><span class="special">);</span>
42</pre>
43<h7><a name="beast.ref.boost__beast__websocket__stream.accept.overload6.h1"></a>
44            <span class="phrase"><a name="beast.ref.boost__beast__websocket__stream.accept.overload6.description"></a></span><a class="link" href="overload6.html#beast.ref.boost__beast__websocket__stream.accept.overload6.description">Description</a>
45          </h7><p>
46            This function is used to perform the <a href="https://en.wikipedia.org/wiki/WebSocket#Protocol_handshake" target="_top">WebSocket
47            handshake</a>, required before messages can be sent and received.
48            During the handshake, the client sends the Websocket Upgrade HTTP request,
49            and the server replies with an HTTP response indicating the result of
50            the handshake. The call blocks until one of the following conditions
51            is true:
52          </p>
53<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
54<li class="listitem">
55                The response is sent.
56              </li>
57<li class="listitem">
58                An error occurs.
59              </li>
60</ul></div>
61<p>
62            The algorithm, known as a <span class="emphasis"><em>composed operation</em></span>, is
63            implemented in terms of calls to the next layer's <code class="computeroutput"><span class="identifier">read_some</span></code>
64            and <code class="computeroutput"><span class="identifier">write_some</span></code> functions.
65            If a valid upgrade request is received, an HTTP response with a <a href="https://tools.ietf.org/html/rfc7230#section-3.1.2" target="_top">status-code</a>
66            of <a class="link" href="../../boost__beast__http__status.html" title="http::status"><code class="computeroutput"><span class="identifier">beast</span><span class="special">::</span><span class="identifier">http</span><span class="special">::</span><span class="identifier">status</span><span class="special">::</span><span class="identifier">switching_protocols</span></code></a> is sent
67            to the peer, otherwise a non-successful error is associated with the
68            operation.
69          </p>
70<h7><a name="beast.ref.boost__beast__websocket__stream.accept.overload6.h2"></a>
71            <span class="phrase"><a name="beast.ref.boost__beast__websocket__stream.accept.overload6.parameters"></a></span><a class="link" href="overload6.html#beast.ref.boost__beast__websocket__stream.accept.overload6.parameters">Parameters</a>
72          </h7><div class="informaltable"><table class="table">
73<colgroup>
74<col>
75<col>
76</colgroup>
77<thead><tr>
78<th>
79                    <p>
80                      Name
81                    </p>
82                  </th>
83<th>
84                    <p>
85                      Description
86                    </p>
87                  </th>
88</tr></thead>
89<tbody>
90<tr>
91<td>
92                    <p>
93                      <code class="computeroutput"><span class="identifier">req</span></code>
94                    </p>
95                  </td>
96<td>
97                    <p>
98                      An object containing the HTTP Upgrade request. Ownership is
99                      not transferred, the implementation will not access this object
100                      from other threads.
101                    </p>
102                  </td>
103</tr>
104<tr>
105<td>
106                    <p>
107                      <code class="computeroutput"><span class="identifier">ec</span></code>
108                    </p>
109                  </td>
110<td>
111                    <p>
112                      Set to indicate what error occurred, if any.
113                    </p>
114                  </td>
115</tr>
116</tbody>
117</table></div>
118<h7><a name="beast.ref.boost__beast__websocket__stream.accept.overload6.h3"></a>
119            <span class="phrase"><a name="beast.ref.boost__beast__websocket__stream.accept.overload6.see_also"></a></span><a class="link" href="overload6.html#beast.ref.boost__beast__websocket__stream.accept.overload6.see_also">See
120            Also</a>
121          </h7><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem">
122                <a href="https://tools.ietf.org/html/rfc6455#section-4.2" target="_top">Websocket
123                Opening Handshake Server Requirements (RFC6455)</a>
124              </li></ul></div>
125</div>
126<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
127<td align="left"></td>
128<td align="right"><div class="copyright-footer">Copyright © 2016-2019 Vinnie
129      Falco<p>
130        Distributed under the Boost Software License, Version 1.0. (See accompanying
131        file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
132      </p>
133</div></td>
134</tr></table>
135<hr>
136<div class="spirit-nav">
137<a accesskey="p" href="overload5.html"><img src="../../../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../accept.html"><img src="../../../../../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="../async_accept.html"><img src="../../../../../../../../doc/src/images/next.png" alt="Next"></a>
138</div>
139</body>
140</html>
141