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| <div class="titlepage"><div><div><h3 class="title"> |
| <a name="boost_asio.tutorial.tutdaytime7"></a><a class="link" href="tutdaytime7.html" title="Daytime.7 - A combined TCP/UDP asynchronous server">Daytime.7 - A combined |
| TCP/UDP asynchronous server</a> |
| </h3></div></div></div> |
| <p> |
| This tutorial program shows how to combine the two asynchronous servers that |
| we have just written, into a single server application. |
| </p> |
| <a name="boost_asio.tutorial.tutdaytime7.the_main___function"></a><h5> |
| <a name="id808236"></a> |
| <a class="link" href="tutdaytime7.html#boost_asio.tutorial.tutdaytime7.the_main___function">The main() |
| function</a> |
| </h5> |
| <pre class="programlisting"><span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span> |
| <span class="special">{</span> |
| <span class="keyword">try</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">io_service</span> <span class="identifier">io_service</span><span class="special">;</span> |
| </pre> |
| <p> |
| We will begin by creating a server object to accept a TCP client connection. |
| </p> |
| <pre class="programlisting"> <span class="identifier">tcp_server</span> <span class="identifier">server1</span><span class="special">(</span><span class="identifier">io_service</span><span class="special">);</span> |
| </pre> |
| <p> |
| We also need a server object to accept a UDP client request. |
| </p> |
| <pre class="programlisting"> <span class="identifier">udp_server</span> <span class="identifier">server2</span><span class="special">(</span><span class="identifier">io_service</span><span class="special">);</span> |
| </pre> |
| <p> |
| We have created two lots of work for the <a class="link" href="../reference/io_service.html" title="io_service">io_service</a> |
| object to do. |
| </p> |
| <pre class="programlisting"> <span class="identifier">io_service</span><span class="special">.</span><span class="identifier">run</span><span class="special">();</span> |
| <span class="special">}</span> |
| <span class="keyword">catch</span> <span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">exception</span><span class="special">&</span> <span class="identifier">e</span><span class="special">)</span> |
| <span class="special">{</span> |
| <span class="identifier">std</span><span class="special">::</span><span class="identifier">cerr</span> <span class="special"><<</span> <span class="identifier">e</span><span class="special">.</span><span class="identifier">what</span><span class="special">()</span> <span class="special"><<</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">endl</span><span class="special">;</span> |
| <span class="special">}</span> |
| |
| <span class="keyword">return</span> <span class="number">0</span><span class="special">;</span> |
| <span class="special">}</span> |
| </pre> |
| <a name="boost_asio.tutorial.tutdaytime7.the_tcp_connection_and_tcp_server_classes"></a><h5> |
| <a name="id808575"></a> |
| <a class="link" href="tutdaytime7.html#boost_asio.tutorial.tutdaytime7.the_tcp_connection_and_tcp_server_classes">The |
| tcp_connection and tcp_server classes</a> |
| </h5> |
| <p> |
| The following two classes are taken from <a class="link" href="tutdaytime3.html" title="Daytime.3 - An asynchronous TCP daytime server">Daytime.3</a> |
| . |
| </p> |
| <pre class="programlisting"><span class="keyword">class</span> <span class="identifier">tcp_connection</span> |
| <span class="special">:</span> <span class="keyword">public</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">enable_shared_from_this</span><span class="special"><</span><span class="identifier">tcp_connection</span><span class="special">></span> |
| <span class="special">{</span> |
| <span class="keyword">public</span><span class="special">:</span> |
| <span class="keyword">typedef</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">shared_ptr</span><span class="special"><</span><span class="identifier">tcp_connection</span><span class="special">></span> <span class="identifier">pointer</span><span class="special">;</span> |
| |
| <span class="keyword">static</span> <span class="identifier">pointer</span> <span class="identifier">create</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">io_service</span><span class="special">&</span> <span class="identifier">io_service</span><span class="special">)</span> |
| <span class="special">{</span> |
| <span class="keyword">return</span> <span class="identifier">pointer</span><span class="special">(</span><span class="keyword">new</span> <span class="identifier">tcp_connection</span><span class="special">(</span><span class="identifier">io_service</span><span class="special">));</span> |
| <span class="special">}</span> |
| |
| <span class="identifier">tcp</span><span class="special">::</span><span class="identifier">socket</span><span class="special">&</span> <span class="identifier">socket</span><span class="special">()</span> |
| <span class="special">{</span> |
| <span class="keyword">return</span> <span class="identifier">socket_</span><span class="special">;</span> |
| <span class="special">}</span> |
| |
| <span class="keyword">void</span> <span class="identifier">start</span><span class="special">()</span> |
| <span class="special">{</span> |
| <span class="identifier">message_</span> <span class="special">=</span> <span class="identifier">make_daytime_string</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">async_write</span><span class="special">(</span><span class="identifier">socket_</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">buffer</span><span class="special">(</span><span class="identifier">message_</span><span class="special">),</span> |
| <span class="identifier">boost</span><span class="special">::</span><span class="identifier">bind</span><span class="special">(&</span><span class="identifier">tcp_connection</span><span class="special">::</span><span class="identifier">handle_write</span><span class="special">,</span> <span class="identifier">shared_from_this</span><span class="special">()));</span> |
| <span class="special">}</span> |
| |
| <span class="keyword">private</span><span class="special">:</span> |
| <span class="identifier">tcp_connection</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">io_service</span><span class="special">&</span> <span class="identifier">io_service</span><span class="special">)</span> |
| <span class="special">:</span> <span class="identifier">socket_</span><span class="special">(</span><span class="identifier">io_service</span><span class="special">)</span> |
| <span class="special">{</span> |
| <span class="special">}</span> |
| |
| <span class="keyword">void</span> <span class="identifier">handle_write</span><span class="special">()</span> |
| <span class="special">{</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">std</span><span class="special">::</span><span class="identifier">string</span> <span class="identifier">message_</span><span class="special">;</span> |
| <span class="special">};</span> |
| |
| <span class="keyword">class</span> <span class="identifier">tcp_server</span> |
| <span class="special">{</span> |
| <span class="keyword">public</span><span class="special">:</span> |
| <span class="identifier">tcp_server</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">io_service</span><span class="special">&</span> <span class="identifier">io_service</span><span class="special">)</span> |
| <span class="special">:</span> <span class="identifier">acceptor_</span><span class="special">(</span><span class="identifier">io_service</span><span class="special">,</span> <span class="identifier">tcp</span><span class="special">::</span><span class="identifier">endpoint</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="number">13</span><span class="special">))</span> |
| <span class="special">{</span> |
| <span class="identifier">start_accept</span><span class="special">();</span> |
| <span class="special">}</span> |
| |
| <span class="keyword">private</span><span class="special">:</span> |
| <span class="keyword">void</span> <span class="identifier">start_accept</span><span class="special">()</span> |
| <span class="special">{</span> |
| <span class="identifier">tcp_connection</span><span class="special">::</span><span class="identifier">pointer</span> <span class="identifier">new_connection</span> <span class="special">=</span> |
| <span class="identifier">tcp_connection</span><span class="special">::</span><span class="identifier">create</span><span class="special">(</span><span class="identifier">acceptor_</span><span class="special">.</span><span class="identifier">io_service</span><span class="special">());</span> |
| |
| <span class="identifier">acceptor_</span><span class="special">.</span><span class="identifier">async_accept</span><span class="special">(</span><span class="identifier">new_connection</span><span class="special">-></span><span class="identifier">socket</span><span class="special">(),</span> |
| <span class="identifier">boost</span><span class="special">::</span><span class="identifier">bind</span><span class="special">(&</span><span class="identifier">tcp_server</span><span class="special">::</span><span class="identifier">handle_accept</span><span class="special">,</span> <span class="keyword">this</span><span class="special">,</span> <span class="identifier">new_connection</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">placeholders</span><span class="special">::</span><span class="identifier">error</span><span class="special">));</span> |
| <span class="special">}</span> |
| |
| <span class="keyword">void</span> <span class="identifier">handle_accept</span><span class="special">(</span><span class="identifier">tcp_connection</span><span class="special">::</span><span class="identifier">pointer</span> <span class="identifier">new_connection</span><span class="special">,</span> |
| <span class="keyword">const</span> <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">&</span> <span class="identifier">error</span><span class="special">)</span> |
| <span class="special">{</span> |
| <span class="keyword">if</span> <span class="special">(!</span><span class="identifier">error</span><span class="special">)</span> |
| <span class="special">{</span> |
| <span class="identifier">new_connection</span><span class="special">-></span><span class="identifier">start</span><span class="special">();</span> |
| <span class="identifier">start_accept</span><span class="special">();</span> |
| <span class="special">}</span> |
| <span class="special">}</span> |
| |
| <span class="identifier">tcp</span><span class="special">::</span><span class="identifier">acceptor</span> <span class="identifier">acceptor_</span><span class="special">;</span> |
| <span class="special">};</span> |
| </pre> |
| <a name="boost_asio.tutorial.tutdaytime7.the_udp_server_class"></a><h5> |
| <a name="id809792"></a> |
| <a class="link" href="tutdaytime7.html#boost_asio.tutorial.tutdaytime7.the_udp_server_class">The |
| udp_server class</a> |
| </h5> |
| <p> |
| Similarly, this next class is taken from the <a class="link" href="tutdaytime6.html" title="Daytime.6 - An asynchronous UDP daytime server">previous |
| tutorial step</a> . |
| </p> |
| <pre class="programlisting"><span class="keyword">class</span> <span class="identifier">udp_server</span> |
| <span class="special">{</span> |
| <span class="keyword">public</span><span class="special">:</span> |
| <span class="identifier">udp_server</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">io_service</span><span class="special">&</span> <span class="identifier">io_service</span><span class="special">)</span> |
| <span class="special">:</span> <span class="identifier">socket_</span><span class="special">(</span><span class="identifier">io_service</span><span class="special">,</span> <span class="identifier">udp</span><span class="special">::</span><span class="identifier">endpoint</span><span class="special">(</span><span class="identifier">udp</span><span class="special">::</span><span class="identifier">v4</span><span class="special">(),</span> <span class="number">13</span><span class="special">))</span> |
| <span class="special">{</span> |
| <span class="identifier">start_receive</span><span class="special">();</span> |
| <span class="special">}</span> |
| |
| <span class="keyword">private</span><span class="special">:</span> |
| <span class="keyword">void</span> <span class="identifier">start_receive</span><span class="special">()</span> |
| <span class="special">{</span> |
| <span class="identifier">socket_</span><span class="special">.</span><span class="identifier">async_receive_from</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">buffer</span><span class="special">(</span><span class="identifier">recv_buffer_</span><span class="special">),</span> <span class="identifier">remote_endpoint_</span><span class="special">,</span> |
| <span class="identifier">boost</span><span class="special">::</span><span class="identifier">bind</span><span class="special">(&</span><span class="identifier">udp_server</span><span class="special">::</span><span class="identifier">handle_receive</span><span class="special">,</span> <span class="keyword">this</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">placeholders</span><span class="special">::</span><span class="identifier">error</span><span class="special">));</span> |
| <span class="special">}</span> |
| |
| <span class="keyword">void</span> <span class="identifier">handle_receive</span><span class="special">(</span><span class="keyword">const</span> <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">&</span> <span class="identifier">error</span><span class="special">)</span> |
| <span class="special">{</span> |
| <span class="keyword">if</span> <span class="special">(!</span><span class="identifier">error</span> <span class="special">||</span> <span class="identifier">error</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">error</span><span class="special">::</span><span class="identifier">message_size</span><span class="special">)</span> |
| <span class="special">{</span> |
| <span class="identifier">boost</span><span class="special">::</span><span class="identifier">shared_ptr</span><span class="special"><</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span><span class="special">></span> <span class="identifier">message</span><span class="special">(</span> |
| <span class="keyword">new</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span><span class="special">(</span><span class="identifier">make_daytime_string</span><span class="special">()));</span> |
| |
| <span class="identifier">socket_</span><span class="special">.</span><span class="identifier">async_send_to</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">buffer</span><span class="special">(*</span><span class="identifier">message</span><span class="special">),</span> <span class="identifier">remote_endpoint_</span><span class="special">,</span> |
| <span class="identifier">boost</span><span class="special">::</span><span class="identifier">bind</span><span class="special">(&</span><span class="identifier">udp_server</span><span class="special">::</span><span class="identifier">handle_send</span><span class="special">,</span> <span class="keyword">this</span><span class="special">,</span> <span class="identifier">message</span><span class="special">));</span> |
| |
| <span class="identifier">start_receive</span><span class="special">();</span> |
| <span class="special">}</span> |
| <span class="special">}</span> |
| |
| <span class="keyword">void</span> <span class="identifier">handle_send</span><span class="special">(</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">shared_ptr</span><span class="special"><</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span><span class="special">></span> <span class="comment">/*message*/</span><span class="special">)</span> |
| <span class="special">{</span> |
| <span class="special">}</span> |
| |
| <span class="identifier">udp</span><span class="special">::</span><span class="identifier">socket</span> <span class="identifier">socket_</span><span class="special">;</span> |
| <span class="identifier">udp</span><span class="special">::</span><span class="identifier">endpoint</span> <span class="identifier">remote_endpoint_</span><span class="special">;</span> |
| <span class="identifier">boost</span><span class="special">::</span><span class="identifier">array</span><span class="special"><</span><span class="keyword">char</span><span class="special">,</span> <span class="number">1</span><span class="special">></span> <span class="identifier">recv_buffer_</span><span class="special">;</span> |
| <span class="special">};</span> |
| </pre> |
| <p> |
| See the <a class="link" href="tutdaytime7/src.html" title="Source listing for Daytime.7">full source listing</a> |
| </p> |
| <p> |
| Return to the <a class="link" href="../tutorial.html" title="Tutorial">tutorial index</a> |
| </p> |
| <p> |
| Previous: <a class="link" href="tutdaytime6.html" title="Daytime.6 - An asynchronous UDP daytime server">Daytime.6 - An |
| asynchronous UDP daytime server</a> |
| </p> |
| </div> |
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| <td align="right"><div class="copyright-footer">Copyright © 2003 - 2010 Christopher M. Kohlhoff<p> |
| Distributed under the Boost Software License, Version 1.0. (See accompanying |
| 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>) |
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