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<h1>AsyncTcpServer_demo.cpp</h1><p>An example of how to use the <a class="el" href="classAsync_1_1TcpServer.html" title="A class for creating a TCP server.">Async::TcpServer</a> class</p>
<div class="fragment"><pre class="fragment"><span class="preprocessor">#include <iostream></span>
<span class="preprocessor">#include <<a class="code" href="AsyncCppApplication_8h.html" title="The core class for writing asyncronous cpp applications.">AsyncCppApplication.h</a>></span>
<span class="preprocessor">#include <<a class="code" href="AsyncTcpServer_8h.html" title="A class for creating a TCP server.">AsyncTcpServer.h</a>></span>
<span class="keyword">using namespace </span>std;
<span class="keyword">using namespace </span>Async;
<span class="keyword">class </span>MyClass : <span class="keyword">public</span> SigC::Object
{
<span class="keyword">public</span>:
MyClass(<span class="keywordtype">void</span>)
{
server = <span class="keyword">new</span> <a name="_a0"></a><a class="code" href="classAsync_1_1TcpServer.html" title="A class for creating a TCP server.">TcpServer</a>(<span class="stringliteral">"12345"</span>);
server->clientConnected.connect(slot(*<span class="keyword">this</span>, &MyClass::onClientConnected));
server->clientDisconnected.connect(
slot(*<span class="keyword">this</span>, &MyClass::onClientDisconnected));
cout << <span class="stringliteral">"Connect using: \"telnet localhost 12345\" from "</span>
<span class="stringliteral">"another console\n"</span>;
}
~MyClass(<span class="keywordtype">void</span>)
{
<span class="keyword">delete</span> server;
}
<span class="keyword">private</span>:
<a class="code" href="classAsync_1_1TcpServer.html" title="A class for creating a TCP server.">TcpServer</a> *server;
<span class="keywordtype">void</span> onClientConnected(<a name="_a1"></a><a class="code" href="classAsync_1_1TcpConnection.html" title="A class for handling exiting TCP connections.">TcpConnection</a> *con)
{
cout << <span class="stringliteral">"Client "</span> << con-><a name="a2"></a><a class="code" href="classAsync_1_1TcpConnection.html#a4072ea8aef1bdd369bacba2367e8660d" title="Return the IP-address of the remote host.">remoteHost</a>() << <span class="stringliteral">":"</span>
<< con-><a name="a3"></a><a class="code" href="classAsync_1_1TcpConnection.html#acc4f658b73f32acc85c79671c2f50676" title="Return the remote port used.">remotePort</a>() << <span class="stringliteral">" connected, "</span>
<< server->numberOfClients() << <span class="stringliteral">" clients connected\n"</span>;
<span class="comment">// We need ONLY to add signal for receive data to the TcpConnection</span>
con-><a name="a4"></a><a class="code" href="classAsync_1_1TcpConnection.html#a833455297abb96d1f414bbeca7a19d96" title="A signal that is emitted when data has been received on the connection.">dataReceived</a>.connect(slot(*<span class="keyword">this</span>, &MyClass::onDataReceived));
<span class="comment">// Send welcome message to the connected client */</span>
con-><a name="a5"></a><a class="code" href="classAsync_1_1TcpConnection.html#a9c941f8e1ce95b2d6419f42b92cc32a6" title="Write data to the TCP connection.">write</a>(<span class="stringliteral">"Hello, client!\n"</span>, 15);
}
<span class="keywordtype">void</span> onClientDisconnected(<a class="code" href="classAsync_1_1TcpConnection.html" title="A class for handling exiting TCP connections.">TcpConnection</a> *con,
<a class="code" href="classAsync_1_1TcpConnection.html#a2a09caf85797c567d0cfce6f29ab9dd4" title="Reason code for disconnects.">TcpConnection::DisconnectReason</a> reason)
{
cout << <span class="stringliteral">"Client "</span> << con-><a class="code" href="classAsync_1_1TcpConnection.html#a4072ea8aef1bdd369bacba2367e8660d" title="Return the IP-address of the remote host.">remoteHost</a>().<a name="a6"></a><a class="code" href="classAsync_1_1IpAddress.html#a7f9be3568547648ef7d2d73cd561dc45" title="Return the string representation of the IP address.">toString</a>() << <span class="stringliteral">":"</span>
<< con-><a class="code" href="classAsync_1_1TcpConnection.html#acc4f658b73f32acc85c79671c2f50676" title="Return the remote port used.">remotePort</a>() << <span class="stringliteral">" disconnected,"</span>
<< server->numberOfClients() << <span class="stringliteral">" clients connected\n"</span>;
<span class="comment">/* Don't delete the con object, the TcpServer will do it */</span>
}
<span class="keywordtype">int</span> onDataReceived(<a class="code" href="classAsync_1_1TcpConnection.html" title="A class for handling exiting TCP connections.">TcpConnection</a> *con, <span class="keywordtype">void</span> *buf, <span class="keywordtype">int</span> count)
{
<span class="comment">// retreive data</span>
<span class="keywordtype">char</span> *str = <span class="keyword">static_cast<</span><span class="keywordtype">char</span> *<span class="keyword">></span>(buf);
<span class="keywordtype">string</span> data(str, str+count);
cout << data;
<span class="comment">// Send data back to sender</span>
<span class="keywordtype">string</span> dataOut = string(<span class="stringliteral">"You said: "</span>) + data;
server->writeOnly(con, dataOut.c_str(), dataOut.size());
<span class="comment">// Other way to send to sender</span>
<span class="comment">//con->write(dataOut.c_str(), dataOut.size());</span>
<span class="comment">// Send to other clients if there is more then one connected to server</span>
<span class="keywordflow">if</span> (server->numberOfClients() > 1)
{
<span class="comment">// Send data back to all OTHER clients</span>
dataOut = string(<span class="stringliteral">"He said : "</span>) + data;
server->writeExcept(con, dataOut.c_str(), dataOut.size());
<span class="comment">// Send data back to all clients</span>
dataOut = string(<span class="stringliteral">"To all : "</span>) + data;
server->writeAll(dataOut.c_str(), dataOut.size());
}
<span class="keywordflow">return</span> count;
}
};
<span class="keywordtype">int</span> main(<span class="keywordtype">int</span> argc, <span class="keywordtype">char</span> **argv)
{
<a name="_a7"></a><a class="code" href="classAsync_1_1CppApplication.html" title="An application class for writing non GUI applications.">CppApplication</a> app;
MyClass my_class;
app.<a name="a8"></a><a class="code" href="classAsync_1_1CppApplication.html#a9a921d33644bbb18767fb4d599f53bf4" title="Execute the application main loop.">exec</a>();
}
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