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  27 <a name="boost_asio.reference.basic_seq_packet_socket.open.overload2"></a><a class="link" href="overload2.html" title="basic_seq_packet_socket::open (2 of 2 overloads)">basic_seq_packet_socket::open
  28           (2 of 2 overloads)</a>
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  30 <p>
  31             <span class="emphasis"><em>Inherited from basic_socket.</em></span>
  32           </p>
  33 <p>
  34             Open the socket using the specified protocol.
  35           </p>
  36 <pre class="programlisting"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">system</span><span class="special">::</span><span class="identifier">error_code</span> <span class="identifier">open</span><span class="special">(</span>
  37     <span class="keyword">const</span> <span class="identifier">protocol_type</span> <span class="special">&amp;</span> <span class="identifier">protocol</span><span class="special">,</span>
  38     <span class="identifier">boost</span><span class="special">::</span><span class="identifier">system</span><span class="special">::</span><span class="identifier">error_code</span> <span class="special">&amp;</span> <span class="identifier">ec</span><span class="special">);</span>
  39 </pre>
  40 <p>
  41             This function opens the socket so that it will use the specified protocol.
  42           </p>
  43 <h6>
  44 <a name="boost_asio.reference.basic_seq_packet_socket.open.overload2.h0"></a>
  45             <span class="phrase"><a name="boost_asio.reference.basic_seq_packet_socket.open.overload2.parameters"></a></span><a class="link" href="overload2.html#boost_asio.reference.basic_seq_packet_socket.open.overload2.parameters">Parameters</a>
  46           </h6>
  47 <div class="variablelist">
  48 <p class="title"><b></b></p>
  49 <dl class="variablelist">
  50 <dt><span class="term">protocol</span></dt>
  51 <dd><p>
  52                   An object specifying which protocol is to be used.
  53                 </p></dd>
  54 <dt><span class="term">ec</span></dt>
  55 <dd><p>
  56                   Set to indicate what error occurred, if any.
  57                 </p></dd>
  58 </dl>
  59 </div>
  60 <h6>
  61 <a name="boost_asio.reference.basic_seq_packet_socket.open.overload2.h1"></a>
  62             <span class="phrase"><a name="boost_asio.reference.basic_seq_packet_socket.open.overload2.example"></a></span><a class="link" href="overload2.html#boost_asio.reference.basic_seq_packet_socket.open.overload2.example">Example</a>
  63           </h6>
  64 <pre class="programlisting"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">asio</span><span class="special">::</span><span class="identifier">ip</span><span class="special">::</span><span class="identifier">tcp</span><span class="special">::</span><span class="identifier">socket</span> <span class="identifier">socket</span><span class="special">(</span><span class="identifier">io_service</span><span class="special">);</span>
  65 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">system</span><span class="special">::</span><span class="identifier">error_code</span> <span class="identifier">ec</span><span class="special">;</span>
  66 <span class="identifier">socket</span><span class="special">.</span><span class="identifier">open</span><span class="special">(</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">asio</span><span class="special">::</span><span class="identifier">ip</span><span class="special">::</span><span class="identifier">tcp</span><span class="special">::</span><span class="identifier">v4</span><span class="special">(),</span> <span class="identifier">ec</span><span class="special">);</span>
  67 <span class="keyword">if</span> <span class="special">(</span><span class="identifier">ec</span><span class="special">)</span>
  68 <span class="special">{</span>
  69   <span class="comment">// An error occurred.</span>
  70 <span class="special">}</span>
  71 </pre>
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