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<TITLE>The Synthesis ToolKit in C++ (STK)</TITLE>
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<h1>Socket Class Reference</h1><code>#include &lt;<a class="el" href="Socket_8h-source.html">Socket.h</a>&gt;</code>
<p>
<p>Inheritance diagram for Socket:
<p><center><img src="classSocket.png" usemap="#Socket_map" border="0" alt=""></center>
<map name="Socket_map">
<area href="classStk.html" alt="Stk" shape="rect" coords="0,0,50,24">
</map>
<a href="classSocket-members.html">List of all members.</a><hr><a name="_details"></a><h2>Detailed Description</h2>
STK TCP socket client/server class.
<p>
This class provides a uniform cross-platform TCP socket client or socket server interface. Methods are provided for reading or writing data buffers to/from connections. This class also provides a number of static functions for use with external socket descriptors.<p>
The user is responsible for checking the values returned by the read/write methods. Values less than or equal to zero indicate a closed or lost connection or the occurence of an error.<p>
by Perry R. Cook and Gary P. Scavone, 1995 - 2004.
<p>
<p>
Definition at line <a class="el" href="Socket_8h-source.html#l00026">26</a> of file <a class="el" href="Socket_8h-source.html">Socket.h</a>.<table border=0 cellpadding=0 cellspacing=0>
<tr><td></td></tr>
<tr><td colspan=2><br><h2>Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="classSocket.html#a0">Socket</a> (int port=2006)</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Default constructor which creates a local socket server on port 2006 (or the specified port number). </em> <a href="#a0"></a><em><br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="classSocket.html#a1">Socket</a> (int port, const char *hostname)</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Class constructor which creates a socket client connection to the specified host and port. </em> <a href="#a1"></a><em><br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top><a class="anchor" name="a2" doxytag="Socket::~Socket" ></a>
&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="classSocket.html#a2">~Socket</a> ()</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">The class destructor closes the socket instance, breaking any existing connections. <br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>int&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="classSocket.html#a3">connect</a> (int port, const char *hostname="localhost")</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Connect a socket client to the specified host and port and returns the resulting socket descriptor. </em> <a href="#a3"></a><em><br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top><a class="anchor" name="a4" doxytag="Socket::close" ></a>
void&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="classSocket.html#a4">close</a> (void)</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Close this socket. <br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top><a class="anchor" name="a5" doxytag="Socket::id" ></a>
int&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="classSocket.html#a5">id</a> (void) const </td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Return the server/client socket descriptor. <br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top><a class="anchor" name="a6" doxytag="Socket::port" ></a>
int&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="classSocket.html#a6">port</a> (void) const </td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Return the server/client port number. <br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>int&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="classSocket.html#a7">accept</a> (void)</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">If this is a socket server, extract the first pending connection request from the queue and create a new connection, returning the descriptor for the accepted socket. </em> <a href="#a7"></a><em><br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top><a class="anchor" name="a8" doxytag="Socket::writeBuffer" ></a>
int&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="classSocket.html#a8">writeBuffer</a> (const void *buffer, long bufferSize, int flags=0)</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Write a buffer over the socket connection. Returns the number of bytes written or -1 if an error occurs. <br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top><a class="anchor" name="a9" doxytag="Socket::readBuffer" ></a>
int&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="classSocket.html#a9">readBuffer</a> (void *buffer, long bufferSize, int flags=0)</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Read a buffer from the socket connection, up to length <em>bufferSize</em>. Returns the number of bytes read or -1 if an error occurs. <br><br></td></tr>
<tr><td colspan=2><br><h2>Static Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top><a class="anchor" name="e0" doxytag="Socket::setBlocking" ></a>
void&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="classSocket.html#e0">setBlocking</a> (int socket, bool enable)</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">If enable = false, the socket is set to non-blocking mode. When first created, sockets are by default in blocking mode. <br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top><a class="anchor" name="e1" doxytag="Socket::close" ></a>
void&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="classSocket.html#e1">close</a> (int socket)</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Close the socket with the given descriptor. <br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top><a class="anchor" name="e2" doxytag="Socket::isValid" ></a>
bool&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="classSocket.html#e2">isValid</a> (int socket)</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Returns true if the socket descriptor is valid. <br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top><a class="anchor" name="e3" doxytag="Socket::writeBuffer" ></a>
int&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="classSocket.html#e3">writeBuffer</a> (int socket, const void *buffer, long bufferSize, int flags)</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Write a buffer via the specified socket. Returns the number of bytes written or -1 if an error occurs. <br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top><a class="anchor" name="e4" doxytag="Socket::readBuffer" ></a>
int&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="classSocket.html#e4">readBuffer</a> (int socket, void *buffer, long bufferSize, int flags)</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Read a buffer via the specified socket. Returns the number of bytes read or -1 if an error occurs. <br><br></td></tr>
</table>
<hr><h2>Constructor &amp; Destructor Documentation</h2>
<a class="anchor" name="a0" doxytag="Socket::Socket" ></a><p>
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<td class="md" nowrap valign="top"> Socket::Socket </td>
<td class="md" valign="top">(&nbsp;</td>
<td class="md" nowrap valign="top">int&nbsp;</td>
<td class="mdname1" valign="top" nowrap> <em>port</em> = 2006 </td>
<td class="md" valign="top">&nbsp;)&nbsp;</td>
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<p>
Default constructor which creates a local socket server on port 2006 (or the specified port number).
<p>
An <a class="el" href="classStkError.html">StkError</a> will be thrown if a socket error occurs during instantiation. </td>
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<a class="anchor" name="a1" doxytag="Socket::Socket" ></a><p>
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<td class="md" nowrap valign="top"> Socket::Socket </td>
<td class="md" valign="top">(&nbsp;</td>
<td class="md" nowrap valign="top">int&nbsp;</td>
<td class="mdname" nowrap> <em>port</em>, </td>
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<td class="md" nowrap>const char *&nbsp;</td>
<td class="mdname" nowrap> <em>hostname</em></td>
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<td class="md">)&nbsp;</td>
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<p>
Class constructor which creates a socket client connection to the specified host and port.
<p>
An <a class="el" href="classStkError.html">StkError</a> will be thrown if a socket error occurs during instantiation. </td>
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<hr><h2>Member Function Documentation</h2>
<a class="anchor" name="a3" doxytag="Socket::connect" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
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<td class="md" nowrap valign="top"> int Socket::connect </td>
<td class="md" valign="top">(&nbsp;</td>
<td class="md" nowrap valign="top">int&nbsp;</td>
<td class="mdname" nowrap> <em>port</em>, </td>
</tr>
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<td></td>
<td></td>
<td class="md" nowrap>const char *&nbsp;</td>
<td class="mdname" nowrap> <em>hostname</em> = "localhost"</td>
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<td class="md">)&nbsp;</td>
<td class="md" colspan="2"></td>
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&nbsp;
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<p>
Connect a socket client to the specified host and port and returns the resulting socket descriptor.
<p>
This method is valid for socket clients only. If it is called for a socket server, -1 is returned. If the socket client is already connected, that connection is terminated and a new connection is attempted. Server connections are made using the <a class="el" href="classSocket.html#a7">accept()</a> method. An <a class="el" href="classStkError.html">StkError</a> will be thrown if a socket error occurs during instantiation. <dl compact><dt><b>See also:</b></dt><dd><a class="el" href="classSocket.html#a7">accept</a> </dd></dl>
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<a class="anchor" name="a7" doxytag="Socket::accept" ></a><p>
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<td class="md" nowrap valign="top"> int Socket::accept </td>
<td class="md" valign="top">(&nbsp;</td>
<td class="md" nowrap valign="top">void&nbsp;</td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top">&nbsp;)&nbsp;</td>
<td class="md" nowrap></td>
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&nbsp;
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<p>
If this is a socket server, extract the first pending connection request from the queue and create a new connection, returning the descriptor for the accepted socket.
<p>
If no connection requests are pending and the socket has not been set non-blocking, this function will block until a connection is present. If an error occurs or this is a socket client, -1 is returned. </td>
</tr>
</table>
<hr>The documentation for this class was generated from the following file:<ul>
<li><a class="el" href="Socket_8h-source.html">Socket.h</a></ul>
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<tr><td><A HREF="http://ccrma.stanford.edu/software/stk/"><I>The Synthesis ToolKit in C++ (STK)</I></A></td></tr>
<tr><td>&copy;1995-2004 Perry R. Cook and Gary P. Scavone. All Rights Reserved.</td></tr>
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