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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Class Poco::Net::SocketImpl</title>
<meta http-equiv="content-type" content="text/html; charset=utf-8"/>
<meta name="author" content="Applied Informatics Software Engineering GmbH and Contributors"/>
<meta name="publisher" content="Applied Informatics Software Engineering GmbH and Contributors"/>
<meta name="copyright" content="Copyright (c) 2009, Applied Informatics Software Engineering GmbH and Contributors"/>
<meta name="language" content="en"/>
<meta name="date" content="2009-11-24"/>
<meta name="generator" content="PocoDoc"/>
<link rel="stylesheet" href="css/styles.css" type="text/css"/>
</head>
<body bgcolor="#ffffff" leftmargin="0" topmargin="0">
<div class="header">
<h1 class="namespace"><a href="Poco.Net.html" class="namespace">Poco::Net</a></h1>
<h1 class="symbol">class SocketImpl</h1>
</div>
<div class="body">
<p>
<b>Library:</b> Net<br />
<b>Package:</b> Sockets<br />
<b>Header:</b> Poco/Net/SocketImpl.h</p>
<h2>Description</h2>
<div class="description">
<p>This class encapsulates the Berkeley sockets API. </p>
<p>Subclasses implement specific socket types like stream or datagram sockets. </p>
<p>You should not create any instances of this class. </p>
</div>
<h2>Inheritance</h2>
<p><b>Direct Base Classes: </b><a href="Poco.RefCountedObject.html" title="class Poco::RefCountedObject">Poco::RefCountedObject</a></p>
<p><b>All Base Classes: </b><a href="Poco.RefCountedObject.html" title="class Poco::RefCountedObject">Poco::RefCountedObject</a></p>
<p><b>Known Derived Classes: </b><a href="Poco.Net.DatagramSocketImpl.html" title="class Poco::Net::DatagramSocketImpl">DatagramSocketImpl</a>, <a href="Poco.Net.ICMPSocketImpl.html" title="class Poco::Net::ICMPSocketImpl">ICMPSocketImpl</a>, <a href="Poco.Net.RawSocketImpl.html" title="class Poco::Net::RawSocketImpl">RawSocketImpl</a>, <a href="Poco.Net.ServerSocketImpl.html" title="class Poco::Net::ServerSocketImpl">ServerSocketImpl</a>, <a href="Poco.Net.StreamSocketImpl.html" title="class Poco::Net::StreamSocketImpl">StreamSocketImpl</a>, <a href="Poco.Net.SecureStreamSocketImpl.html" title="class Poco::Net::SecureStreamSocketImpl">SecureStreamSocketImpl</a>, <a href="Poco.Net.SecureServerSocketImpl.html" title="class Poco::Net::SecureServerSocketImpl">SecureServerSocketImpl</a></p>
<h2>Member Summary</h2>
<p><b>Member Functions: </b><a href="Poco.Net.SocketImpl.html#15187" title="Poco::Net::SocketImpl::acceptConnection()">acceptConnection</a>, <a href="Poco.Net.SocketImpl.html#15241" title="Poco::Net::SocketImpl::address()">address</a>, <a href="Poco.Net.SocketImpl.html#15225" title="Poco::Net::SocketImpl::available()">available</a>, <a href="Poco.Net.SocketImpl.html#15196" title="Poco::Net::SocketImpl::bind()">bind</a>, <a href="Poco.Net.SocketImpl.html#15201" title="Poco::Net::SocketImpl::close()">close</a>, <a href="Poco.Net.SocketImpl.html#15189" title="Poco::Net::SocketImpl::connect()">connect</a>, <a href="Poco.Net.SocketImpl.html#15194" title="Poco::Net::SocketImpl::connectNB()">connectNB</a>, <a href="Poco.Net.SocketImpl.html#15342" title="Poco::Net::SocketImpl::error()">error</a>, <a href="Poco.Net.SocketImpl.html#15319" title="Poco::Net::SocketImpl::getBlocking()">getBlocking</a>, <a href="Poco.Net.SocketImpl.html#15316" title="Poco::Net::SocketImpl::getBroadcast()">getBroadcast</a>, <a href="Poco.Net.SocketImpl.html#15304" title="Poco::Net::SocketImpl::getKeepAlive()">getKeepAlive</a>, <a href="Poco.Net.SocketImpl.html#15296" title="Poco::Net::SocketImpl::getLinger()">getLinger</a>, <a href="Poco.Net.SocketImpl.html#15301" title="Poco::Net::SocketImpl::getNoDelay()">getNoDelay</a>, <a href="Poco.Net.SocketImpl.html#15313" title="Poco::Net::SocketImpl::getOOBInline()">getOOBInline</a>, <a href="Poco.Net.SocketImpl.html#15268" title="Poco::Net::SocketImpl::getOption()">getOption</a>, <a href="Poco.Net.SocketImpl.html#15288" title="Poco::Net::SocketImpl::getRawOption()">getRawOption</a>, <a href="Poco.Net.SocketImpl.html#15234" title="Poco::Net::SocketImpl::getReceiveBufferSize()">getReceiveBufferSize</a>, <a href="Poco.Net.SocketImpl.html#15240" title="Poco::Net::SocketImpl::getReceiveTimeout()">getReceiveTimeout</a>, <a href="Poco.Net.SocketImpl.html#15307" title="Poco::Net::SocketImpl::getReuseAddress()">getReuseAddress</a>, <a href="Poco.Net.SocketImpl.html#15310" title="Poco::Net::SocketImpl::getReusePort()">getReusePort</a>, <a href="Poco.Net.SocketImpl.html#15231" title="Poco::Net::SocketImpl::getSendBufferSize()">getSendBufferSize</a>, <a href="Poco.Net.SocketImpl.html#15237" title="Poco::Net::SocketImpl::getSendTimeout()">getSendTimeout</a>, <a href="Poco.Net.SocketImpl.html#15333" title="Poco::Net::SocketImpl::init()">init</a>, <a href="Poco.Net.SocketImpl.html#15335" title="Poco::Net::SocketImpl::initSocket()">initSocket</a>, <a href="Poco.Net.SocketImpl.html#15328" title="Poco::Net::SocketImpl::initialized()">initialized</a>, <a href="Poco.Net.SocketImpl.html#15322" title="Poco::Net::SocketImpl::ioctl()">ioctl</a>, <a href="Poco.Net.SocketImpl.html#15341" title="Poco::Net::SocketImpl::lastError()">lastError</a>, <a href="Poco.Net.SocketImpl.html#15199" title="Poco::Net::SocketImpl::listen()">listen</a>, <a href="Poco.Net.SocketImpl.html#15242" title="Poco::Net::SocketImpl::peerAddress()">peerAddress</a>, <a href="Poco.Net.SocketImpl.html#15226" title="Poco::Net::SocketImpl::poll()">poll</a>, <a href="Poco.Net.SocketImpl.html#15209" title="Poco::Net::SocketImpl::receiveBytes()">receiveBytes</a>, <a href="Poco.Net.SocketImpl.html#15218" title="Poco::Net::SocketImpl::receiveFrom()">receiveFrom</a>, <a href="Poco.Net.SocketImpl.html#15339" title="Poco::Net::SocketImpl::reset()">reset</a>, <a href="Poco.Net.SocketImpl.html#15205" title="Poco::Net::SocketImpl::sendBytes()">sendBytes</a>, <a href="Poco.Net.SocketImpl.html#15213" title="Poco::Net::SocketImpl::sendTo()">sendTo</a>, <a href="Poco.Net.SocketImpl.html#15223" title="Poco::Net::SocketImpl::sendUrgent()">sendUrgent</a>, <a href="Poco.Net.SocketImpl.html#15317" title="Poco::Net::SocketImpl::setBlocking()">setBlocking</a>, <a href="Poco.Net.SocketImpl.html#15314" title="Poco::Net::SocketImpl::setBroadcast()">setBroadcast</a>, <a href="Poco.Net.SocketImpl.html#15302" title="Poco::Net::SocketImpl::setKeepAlive()">setKeepAlive</a>, <a href="Poco.Net.SocketImpl.html#15293" title="Poco::Net::SocketImpl::setLinger()">setLinger</a>, <a href="Poco.Net.SocketImpl.html#15299" title="Poco::Net::SocketImpl::setNoDelay()">setNoDelay</a>, <a href="Poco.Net.SocketImpl.html#15311" title="Poco::Net::SocketImpl::setOOBInline()">setOOBInline</a>, <a href="Poco.Net.SocketImpl.html#15243" title="Poco::Net::SocketImpl::setOption()">setOption</a>, <a href="Poco.Net.SocketImpl.html#15263" title="Poco::Net::SocketImpl::setRawOption()">setRawOption</a>, <a href="Poco.Net.SocketImpl.html#15232" title="Poco::Net::SocketImpl::setReceiveBufferSize()">setReceiveBufferSize</a>, <a href="Poco.Net.SocketImpl.html#15238" title="Poco::Net::SocketImpl::setReceiveTimeout()">setReceiveTimeout</a>, <a href="Poco.Net.SocketImpl.html#15305" title="Poco::Net::SocketImpl::setReuseAddress()">setReuseAddress</a>, <a href="Poco.Net.SocketImpl.html#15308" title="Poco::Net::SocketImpl::setReusePort()">setReusePort</a>, <a href="Poco.Net.SocketImpl.html#15229" title="Poco::Net::SocketImpl::setSendBufferSize()">setSendBufferSize</a>, <a href="Poco.Net.SocketImpl.html#15235" title="Poco::Net::SocketImpl::setSendTimeout()">setSendTimeout</a>, <a href="Poco.Net.SocketImpl.html#15204" title="Poco::Net::SocketImpl::shutdown()">shutdown</a>, <a href="Poco.Net.SocketImpl.html#15202" title="Poco::Net::SocketImpl::shutdownReceive()">shutdownReceive</a>, <a href="Poco.Net.SocketImpl.html#15203" title="Poco::Net::SocketImpl::shutdownSend()">shutdownSend</a>, <a href="Poco.Net.SocketImpl.html#15320" title="Poco::Net::SocketImpl::socketError()">socketError</a>, <a href="Poco.Net.SocketImpl.html#15321" title="Poco::Net::SocketImpl::sockfd()">sockfd</a></p>
<p><b>Inherited Functions: </b><a href="Poco.RefCountedObject.html#9659" title="Poco::RefCountedObject::duplicate()">duplicate</a>, <a href="Poco.RefCountedObject.html#9661" title="Poco::RefCountedObject::referenceCount()">referenceCount</a>, <a href="Poco.RefCountedObject.html#9660" title="Poco::RefCountedObject::release()">release</a></p>
<h2>Enumerations</h2>
<h3><a name="15183">SelectMode</a></h3>
<div class="description">
<p></p>
</div>
<p class="decl"><a name="15184">SELECT_READ</a> = 1</p>
<div class="description">
<p></p>
</div>
<p class="decl"><a name="15185">SELECT_WRITE</a> = 2</p>
<div class="description">
<p></p>
</div>
<p class="decl"><a name="15186">SELECT_ERROR</a> = 4</p>
<div class="description">
<p></p>
</div>
<h2>Constructors</h2>
<h3><a name="15329">SocketImpl</a> <img src="images/protected.gif" alt="protected" title="protected" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl"><a href="Poco.Net.SocketImpl.html" title="class Poco::Net::SocketImpl">SocketImpl</a>();</p>
<div class="description">
<p>Creates a <a href="Poco.Net.SocketImpl.html" title="class Poco::Net::SocketImpl">SocketImpl</a>. </p>
</div>
<h3><a name="15330">SocketImpl</a> <img src="images/protected.gif" alt="protected" title="protected" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl"><a href="Poco.Net.SocketImpl.html" title="class Poco::Net::SocketImpl">SocketImpl</a>(<br />&nbsp;&nbsp;&nbsp;&nbsp;int sockfd<br />);</p>
<div class="description">
<p>Creates a <a href="Poco.Net.SocketImpl.html" title="class Poco::Net::SocketImpl">SocketImpl</a> using the given native socket. </p>
</div>
<h2>Destructor</h2>
<h3><a name="15332">~SocketImpl</a> <img src="images/protected.gif" alt="protected" title="protected" style="vertical-align:baseline;" border="0" />  <img src="images/virtual.gif" alt="virtual" title="virtual" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">virtual ~<a href="Poco.Net.SocketImpl.html" title="class Poco::Net::SocketImpl">SocketImpl</a>();</p>
<div class="description">
<p>Destroys the <a href="Poco.Net.SocketImpl.html" title="class Poco::Net::SocketImpl">SocketImpl</a>. Closes the socket if it is still open. </p>
</div>
<h2>Member Functions</h2>
<h3><a name="15187">acceptConnection</a> <img src="images/virtual.gif" alt="virtual" title="virtual" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">virtual <a href="Poco.Net.SocketImpl.html" title="class Poco::Net::SocketImpl">SocketImpl</a> * acceptConnection(<br />&nbsp;&nbsp;&nbsp;&nbsp;<a href="Poco.Net.SocketAddress.html" title="class Poco::Net::SocketAddress">SocketAddress</a> &amp; clientAddr<br />);</p>
<div class="description">
<p>Get the next completed connection from the socket's completed connection queue. </p>
<p>If the queue is empty, waits until a connection request completes. </p>
<p>Returns a new TCP socket for the connection with the client. </p>
<p>The client socket's address is returned in clientAddr. </p>
</div>
<h3><a name="15241">address</a> <img src="images/virtual.gif" alt="virtual" title="virtual" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">virtual <a href="Poco.Net.SocketAddress.html" title="class Poco::Net::SocketAddress">SocketAddress</a> address();</p>
<div class="description">
<p>Returns the IP address and port number of the socket. </p>
</div>
<h3><a name="15225">available</a> <img src="images/virtual.gif" alt="virtual" title="virtual" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">virtual int available();</p>
<div class="description">
<p>Returns the number of bytes available that can be read without causing the socket to block. </p>
</div>
<h3><a name="15196">bind</a> <img src="images/virtual.gif" alt="virtual" title="virtual" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">virtual void bind(<br />&nbsp;&nbsp;&nbsp;&nbsp;const <a href="Poco.Net.SocketAddress.html" title="class Poco::Net::SocketAddress">SocketAddress</a> &amp; address,<br />&nbsp;&nbsp;&nbsp;&nbsp;bool reuseAddress = false<br />);</p>
<div class="description">
<p>Bind a local address to the socket. </p>
<p>This is usually only done when establishing a server socket. TCP clients should not bind a socket to a specific address. </p>
<p>If reuseAddress is true, sets the SO_REUSEADDR socket option. </p>
</div>
<h3><a name="15201">close</a> <img src="images/virtual.gif" alt="virtual" title="virtual" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">virtual void close();</p>
<div class="description">
<p>Close the socket. </p>
</div>
<h3><a name="15189">connect</a> <img src="images/virtual.gif" alt="virtual" title="virtual" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">virtual void connect(<br />&nbsp;&nbsp;&nbsp;&nbsp;const <a href="Poco.Net.SocketAddress.html" title="class Poco::Net::SocketAddress">SocketAddress</a> &amp; address<br />);</p>
<div class="description">
<p>Initializes the socket and establishes a connection to  the TCP server at the given address. </p>
<p>Can also be used for UDP sockets. In this case, no connection is established. Instead, incoming and outgoing packets are restricted to the specified address. </p>
</div>
<h3><a name="15191">connect</a> <img src="images/virtual.gif" alt="virtual" title="virtual" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">virtual void connect(<br />&nbsp;&nbsp;&nbsp;&nbsp;const <a href="Poco.Net.SocketAddress.html" title="class Poco::Net::SocketAddress">SocketAddress</a> &amp; address,<br />&nbsp;&nbsp;&nbsp;&nbsp;const <a href="Poco.Timespan.html" title="class Poco::Timespan">Poco::Timespan</a> &amp; timeout<br />);</p>
<div class="description">
<p>Initializes the socket, sets the socket timeout and  establishes a connection to the TCP server at the given address. </p>
</div>
<h3><a name="15194">connectNB</a> <img src="images/virtual.gif" alt="virtual" title="virtual" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">virtual void connectNB(<br />&nbsp;&nbsp;&nbsp;&nbsp;const <a href="Poco.Net.SocketAddress.html" title="class Poco::Net::SocketAddress">SocketAddress</a> &amp; address<br />);</p>
<div class="description">
<p>Initializes the socket and establishes a connection to  the TCP server at the given address. Prior to opening the connection the socket is set to nonblocking mode. </p>
</div>
<h3><a name="15319">getBlocking</a> <img src="images/virtual.gif" alt="virtual" title="virtual" style="vertical-align:baseline;" border="0" />  <img src="images/inline.gif" alt="inline" title="inline" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">virtual bool getBlocking() const;</p>
<div class="description">
<p>Returns the blocking mode of the socket. This method will only work if the blocking modes of  the socket are changed via the setBlocking method! </p>
</div>
<h3><a name="15316">getBroadcast</a></h3>
<p class="decl">bool getBroadcast();</p>
<div class="description">
<p>Returns the value of the SO_BROADCAST socket option. </p>
</div>
<h3><a name="15304">getKeepAlive</a></h3>
<p class="decl">bool getKeepAlive();</p>
<div class="description">
<p>Returns the value of the SO_KEEPALIVE socket option. </p>
</div>
<h3><a name="15296">getLinger</a></h3>
<p class="decl">void getLinger(<br />&nbsp;&nbsp;&nbsp;&nbsp;bool &amp; on,<br />&nbsp;&nbsp;&nbsp;&nbsp;int &amp; seconds<br />);</p>
<div class="description">
<p>Returns the value of the SO_LINGER socket option. </p>
</div>
<h3><a name="15301">getNoDelay</a></h3>
<p class="decl">bool getNoDelay();</p>
<div class="description">
<p>Returns the value of the TCP_NODELAY socket option. </p>
</div>
<h3><a name="15313">getOOBInline</a></h3>
<p class="decl">bool getOOBInline();</p>
<div class="description">
<p>Returns the value of the SO_OOBINLINE socket option. </p>
</div>
<h3><a name="15268">getOption</a></h3>
<p class="decl">void getOption(<br />&nbsp;&nbsp;&nbsp;&nbsp;int level,<br />&nbsp;&nbsp;&nbsp;&nbsp;int option,<br />&nbsp;&nbsp;&nbsp;&nbsp;int &amp; value<br />);</p>
<div class="description">
<p>Returns the value of the socket option  specified by level and option. </p>
</div>
<h3><a name="15272">getOption</a></h3>
<p class="decl">void getOption(<br />&nbsp;&nbsp;&nbsp;&nbsp;int level,<br />&nbsp;&nbsp;&nbsp;&nbsp;int option,<br />&nbsp;&nbsp;&nbsp;&nbsp;unsigned &amp; value<br />);</p>
<div class="description">
<p>Returns the value of the socket option  specified by level and option. </p>
</div>
<h3><a name="15276">getOption</a></h3>
<p class="decl">void getOption(<br />&nbsp;&nbsp;&nbsp;&nbsp;int level,<br />&nbsp;&nbsp;&nbsp;&nbsp;int option,<br />&nbsp;&nbsp;&nbsp;&nbsp;unsigned char &amp; value<br />);</p>
<div class="description">
<p>Returns the value of the socket option  specified by level and option. </p>
</div>
<h3><a name="15280">getOption</a></h3>
<p class="decl">void getOption(<br />&nbsp;&nbsp;&nbsp;&nbsp;int level,<br />&nbsp;&nbsp;&nbsp;&nbsp;int option,<br />&nbsp;&nbsp;&nbsp;&nbsp;<a href="Poco.Timespan.html" title="class Poco::Timespan">Poco::Timespan</a> &amp; value<br />);</p>
<div class="description">
<p>Returns the value of the socket option  specified by level and option. </p>
</div>
<h3><a name="15284">getOption</a></h3>
<p class="decl">void getOption(<br />&nbsp;&nbsp;&nbsp;&nbsp;int level,<br />&nbsp;&nbsp;&nbsp;&nbsp;int option,<br />&nbsp;&nbsp;&nbsp;&nbsp;<a href="Poco.Net.IPAddress.html" title="class Poco::Net::IPAddress">IPAddress</a> &amp; value<br />);</p>
<div class="description">
<p>Returns the value of the socket option  specified by level and option. </p>
</div>
<h3><a name="15288">getRawOption</a> <img src="images/virtual.gif" alt="virtual" title="virtual" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">virtual void getRawOption(<br />&nbsp;&nbsp;&nbsp;&nbsp;int level,<br />&nbsp;&nbsp;&nbsp;&nbsp;int option,<br />&nbsp;&nbsp;&nbsp;&nbsp;void * value,<br />&nbsp;&nbsp;&nbsp;&nbsp;socklen_t &amp; length<br />);</p>
<div class="description">
<p>Returns the value of the socket option  specified by level and option.	 </p>
</div>
<h3><a name="15234">getReceiveBufferSize</a> <img src="images/virtual.gif" alt="virtual" title="virtual" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">virtual int getReceiveBufferSize();</p>
<div class="description">
<p>Returns the size of the receive buffer. </p>
<p>The returned value may be different than the value previously set with <a href="Poco.Net.SocketImpl.html#15232" title="Poco::Net::SocketImpl::setReceiveBufferSize()">setReceiveBufferSize</a>(), as the system is free to adjust the value. </p>
</div>
<h3><a name="15240">getReceiveTimeout</a> <img src="images/virtual.gif" alt="virtual" title="virtual" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">virtual <a href="Poco.Timespan.html" title="class Poco::Timespan">Poco::Timespan</a> getReceiveTimeout();</p>
<div class="description">
<p>Returns the receive timeout for the socket. </p>
<p>The returned timeout may be different than the timeout previously set with <a href="Poco.Net.SocketImpl.html#15238" title="Poco::Net::SocketImpl::setReceiveTimeout()">setReceiveTimeout</a>(), as the system is free to adjust the value. </p>
</div>
<h3><a name="15307">getReuseAddress</a></h3>
<p class="decl">bool getReuseAddress();</p>
<div class="description">
<p>Returns the value of the SO_REUSEADDR socket option. </p>
</div>
<h3><a name="15310">getReusePort</a></h3>
<p class="decl">bool getReusePort();</p>
<div class="description">
<p>Returns the value of the SO_REUSEPORT socket option. </p>
<p>Returns false if the socket implementation does not support SO_REUSEPORT. </p>
</div>
<h3><a name="15231">getSendBufferSize</a> <img src="images/virtual.gif" alt="virtual" title="virtual" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">virtual int getSendBufferSize();</p>
<div class="description">
<p>Returns the size of the send buffer. </p>
<p>The returned value may be different than the value previously set with <a href="Poco.Net.SocketImpl.html#15229" title="Poco::Net::SocketImpl::setSendBufferSize()">setSendBufferSize</a>(), as the system is free to adjust the value. </p>
</div>
<h3><a name="15237">getSendTimeout</a> <img src="images/virtual.gif" alt="virtual" title="virtual" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">virtual <a href="Poco.Timespan.html" title="class Poco::Timespan">Poco::Timespan</a> getSendTimeout();</p>
<div class="description">
<p>Returns the send timeout for the socket. </p>
<p>The returned timeout may be different than the timeout previously set with <a href="Poco.Net.SocketImpl.html#15235" title="Poco::Net::SocketImpl::setSendTimeout()">setSendTimeout</a>(), as the system is free to adjust the value. </p>
</div>
<h3><a name="15328">initialized</a> <img src="images/inline.gif" alt="inline" title="inline" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">bool initialized() const;</p>
<div class="description">
<p>Returns true if and only if the underlying socket is initialized. </p>
</div>
<h3><a name="15322">ioctl</a></h3>
<p class="decl">void ioctl(<br />&nbsp;&nbsp;&nbsp;&nbsp;int request,<br />&nbsp;&nbsp;&nbsp;&nbsp;int &amp; arg<br />);</p>
<div class="description">
<p>A wrapper for the ioctl system call. </p>
</div>
<h3><a name="15325">ioctl</a></h3>
<p class="decl">void ioctl(<br />&nbsp;&nbsp;&nbsp;&nbsp;int request,<br />&nbsp;&nbsp;&nbsp;&nbsp;void * arg<br />);</p>
<div class="description">
<p>A wrapper for the ioctl system call. </p>
</div>
<h3><a name="15199">listen</a> <img src="images/virtual.gif" alt="virtual" title="virtual" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">virtual void listen(<br />&nbsp;&nbsp;&nbsp;&nbsp;int backlog = 64<br />);</p>
<div class="description">
<p>Puts the socket into listening state. </p>
<p>The socket becomes a passive socket that can accept incoming connection requests. </p>
<p>The backlog argument specifies the maximum number of connections that can be queued for this socket. </p>
</div>
<h3><a name="15242">peerAddress</a> <img src="images/virtual.gif" alt="virtual" title="virtual" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">virtual <a href="Poco.Net.SocketAddress.html" title="class Poco::Net::SocketAddress">SocketAddress</a> peerAddress();</p>
<div class="description">
<p>Returns the IP address and port number of the peer socket. </p>
</div>
<h3><a name="15226">poll</a> <img src="images/virtual.gif" alt="virtual" title="virtual" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">virtual bool poll(<br />&nbsp;&nbsp;&nbsp;&nbsp;const <a href="Poco.Timespan.html" title="class Poco::Timespan">Poco::Timespan</a> &amp; timeout,<br />&nbsp;&nbsp;&nbsp;&nbsp;int mode<br />);</p>
<div class="description">
<p>Determines the status of the socket, using a  call to select(). </p>
<p>The mode argument is constructed by combining the values of the <a href="Poco.Net.SocketImpl.html#15183" title="enum  Poco::Net::SocketImpl::SelectMode">SelectMode</a> enumeration. </p>
<p>Returns true if the next operation corresponding to mode will not block, false otherwise. </p>
</div>
<h3><a name="15209">receiveBytes</a> <img src="images/virtual.gif" alt="virtual" title="virtual" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">virtual int receiveBytes(<br />&nbsp;&nbsp;&nbsp;&nbsp;void * buffer,<br />&nbsp;&nbsp;&nbsp;&nbsp;int length,<br />&nbsp;&nbsp;&nbsp;&nbsp;int flags = 0<br />);</p>
<div class="description">
<p>Receives data from the socket and stores it in buffer. Up to length bytes are received. </p>
<p>Returns the number of bytes received. </p>
<p>Certain socket implementations may also return a negative value denoting a certain condition. </p>
</div>
<h3><a name="15218">receiveFrom</a> <img src="images/virtual.gif" alt="virtual" title="virtual" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">virtual int receiveFrom(<br />&nbsp;&nbsp;&nbsp;&nbsp;void * buffer,<br />&nbsp;&nbsp;&nbsp;&nbsp;int length,<br />&nbsp;&nbsp;&nbsp;&nbsp;<a href="Poco.Net.SocketAddress.html" title="class Poco::Net::SocketAddress">SocketAddress</a> &amp; address,<br />&nbsp;&nbsp;&nbsp;&nbsp;int flags = 0<br />);</p>
<div class="description">
<p>Receives data from the socket and stores it in buffer. Up to length bytes are received. Stores the address of the sender in address. </p>
<p>Returns the number of bytes received. </p>
</div>
<h3><a name="15205">sendBytes</a> <img src="images/virtual.gif" alt="virtual" title="virtual" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">virtual int sendBytes(<br />&nbsp;&nbsp;&nbsp;&nbsp;const void * buffer,<br />&nbsp;&nbsp;&nbsp;&nbsp;int length,<br />&nbsp;&nbsp;&nbsp;&nbsp;int flags = 0<br />);</p>
<div class="description">
<p>Sends the contents of the given buffer through the socket. </p>
<p>Returns the number of bytes sent, which may be less than the number of bytes specified. </p>
<p>Certain socket implementations may also return a negative value denoting a certain condition. </p>
</div>
<h3><a name="15213">sendTo</a> <img src="images/virtual.gif" alt="virtual" title="virtual" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">virtual int sendTo(<br />&nbsp;&nbsp;&nbsp;&nbsp;const void * buffer,<br />&nbsp;&nbsp;&nbsp;&nbsp;int length,<br />&nbsp;&nbsp;&nbsp;&nbsp;const <a href="Poco.Net.SocketAddress.html" title="class Poco::Net::SocketAddress">SocketAddress</a> &amp; address,<br />&nbsp;&nbsp;&nbsp;&nbsp;int flags = 0<br />);</p>
<div class="description">
<p>Sends the contents of the given buffer through the socket to the given address. </p>
<p>Returns the number of bytes sent, which may be less than the number of bytes specified. </p>
</div>
<h3><a name="15223">sendUrgent</a> <img src="images/virtual.gif" alt="virtual" title="virtual" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">virtual void sendUrgent(<br />&nbsp;&nbsp;&nbsp;&nbsp;unsigned char data<br />);</p>
<div class="description">
<p>Sends one byte of urgent data through the socket. </p>
<p>The data is sent with the MSG_OOB flag. </p>
<p>The preferred way for a socket to receive urgent data is by enabling the SO_OOBINLINE option. </p>
</div>
<h3><a name="15317">setBlocking</a> <img src="images/virtual.gif" alt="virtual" title="virtual" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">virtual void setBlocking(<br />&nbsp;&nbsp;&nbsp;&nbsp;bool flag<br />);</p>
<div class="description">
<p>Sets the socket in blocking mode if flag is true, disables blocking mode if flag is false. </p>
</div>
<h3><a name="15314">setBroadcast</a></h3>
<p class="decl">void setBroadcast(<br />&nbsp;&nbsp;&nbsp;&nbsp;bool flag<br />);</p>
<div class="description">
<p>Sets the value of the SO_BROADCAST socket option. </p>
</div>
<h3><a name="15302">setKeepAlive</a></h3>
<p class="decl">void setKeepAlive(<br />&nbsp;&nbsp;&nbsp;&nbsp;bool flag<br />);</p>
<div class="description">
<p>Sets the value of the SO_KEEPALIVE socket option. </p>
</div>
<h3><a name="15293">setLinger</a></h3>
<p class="decl">void setLinger(<br />&nbsp;&nbsp;&nbsp;&nbsp;bool on,<br />&nbsp;&nbsp;&nbsp;&nbsp;int seconds<br />);</p>
<div class="description">
<p>Sets the value of the SO_LINGER socket option. </p>
</div>
<h3><a name="15299">setNoDelay</a></h3>
<p class="decl">void setNoDelay(<br />&nbsp;&nbsp;&nbsp;&nbsp;bool flag<br />);</p>
<div class="description">
<p>Sets the value of the TCP_NODELAY socket option. </p>
</div>
<h3><a name="15311">setOOBInline</a></h3>
<p class="decl">void setOOBInline(<br />&nbsp;&nbsp;&nbsp;&nbsp;bool flag<br />);</p>
<div class="description">
<p>Sets the value of the SO_OOBINLINE socket option. </p>
</div>
<h3><a name="15243">setOption</a></h3>
<p class="decl">void setOption(<br />&nbsp;&nbsp;&nbsp;&nbsp;int level,<br />&nbsp;&nbsp;&nbsp;&nbsp;int option,<br />&nbsp;&nbsp;&nbsp;&nbsp;int value<br />);</p>
<div class="description">
<p>Sets the socket option specified by level and option to the given integer value. </p>
</div>
<h3><a name="15247">setOption</a></h3>
<p class="decl">void setOption(<br />&nbsp;&nbsp;&nbsp;&nbsp;int level,<br />&nbsp;&nbsp;&nbsp;&nbsp;int option,<br />&nbsp;&nbsp;&nbsp;&nbsp;unsigned value<br />);</p>
<div class="description">
<p>Sets the socket option specified by level and option to the given integer value. </p>
</div>
<h3><a name="15251">setOption</a></h3>
<p class="decl">void setOption(<br />&nbsp;&nbsp;&nbsp;&nbsp;int level,<br />&nbsp;&nbsp;&nbsp;&nbsp;int option,<br />&nbsp;&nbsp;&nbsp;&nbsp;unsigned char value<br />);</p>
<div class="description">
<p>Sets the socket option specified by level and option to the given integer value. </p>
</div>
<h3><a name="15255">setOption</a></h3>
<p class="decl">void setOption(<br />&nbsp;&nbsp;&nbsp;&nbsp;int level,<br />&nbsp;&nbsp;&nbsp;&nbsp;int option,<br />&nbsp;&nbsp;&nbsp;&nbsp;const <a href="Poco.Timespan.html" title="class Poco::Timespan">Poco::Timespan</a> &amp; value<br />);</p>
<div class="description">
<p>Sets the socket option specified by level and option to the given time value. </p>
</div>
<h3><a name="15259">setOption</a></h3>
<p class="decl">void setOption(<br />&nbsp;&nbsp;&nbsp;&nbsp;int level,<br />&nbsp;&nbsp;&nbsp;&nbsp;int option,<br />&nbsp;&nbsp;&nbsp;&nbsp;const <a href="Poco.Net.IPAddress.html" title="class Poco::Net::IPAddress">IPAddress</a> &amp; value<br />);</p>
<div class="description">
<p>Sets the socket option specified by level and option to the given time value. </p>
</div>
<h3><a name="15263">setRawOption</a> <img src="images/virtual.gif" alt="virtual" title="virtual" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">virtual void setRawOption(<br />&nbsp;&nbsp;&nbsp;&nbsp;int level,<br />&nbsp;&nbsp;&nbsp;&nbsp;int option,<br />&nbsp;&nbsp;&nbsp;&nbsp;const void * value,<br />&nbsp;&nbsp;&nbsp;&nbsp;socklen_t length<br />);</p>
<div class="description">
<p>Sets the socket option specified by level and option to the given time value. </p>
</div>
<h3><a name="15232">setReceiveBufferSize</a> <img src="images/virtual.gif" alt="virtual" title="virtual" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">virtual void setReceiveBufferSize(<br />&nbsp;&nbsp;&nbsp;&nbsp;int size<br />);</p>
<div class="description">
<p>Sets the size of the receive buffer. </p>
</div>
<h3><a name="15238">setReceiveTimeout</a> <img src="images/virtual.gif" alt="virtual" title="virtual" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">virtual void setReceiveTimeout(<br />&nbsp;&nbsp;&nbsp;&nbsp;const <a href="Poco.Timespan.html" title="class Poco::Timespan">Poco::Timespan</a> &amp; timeout<br />);</p>
<div class="description">
<p>Sets the send timeout for the socket. </p>
<p>On systems that do not support SO_RCVTIMEO, a workaround using <a href="Poco.Net.SocketImpl.html#15226" title="Poco::Net::SocketImpl::poll()">poll</a>() is provided. </p>
</div>
<h3><a name="15305">setReuseAddress</a></h3>
<p class="decl">void setReuseAddress(<br />&nbsp;&nbsp;&nbsp;&nbsp;bool flag<br />);</p>
<div class="description">
<p>Sets the value of the SO_REUSEADDR socket option. </p>
</div>
<h3><a name="15308">setReusePort</a></h3>
<p class="decl">void setReusePort(<br />&nbsp;&nbsp;&nbsp;&nbsp;bool flag<br />);</p>
<div class="description">
<p>Sets the value of the SO_REUSEPORT socket option. Does nothing if the socket implementation does not support SO_REUSEPORT. </p>
</div>
<h3><a name="15229">setSendBufferSize</a> <img src="images/virtual.gif" alt="virtual" title="virtual" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">virtual void setSendBufferSize(<br />&nbsp;&nbsp;&nbsp;&nbsp;int size<br />);</p>
<div class="description">
<p>Sets the size of the send buffer. </p>
</div>
<h3><a name="15235">setSendTimeout</a> <img src="images/virtual.gif" alt="virtual" title="virtual" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">virtual void setSendTimeout(<br />&nbsp;&nbsp;&nbsp;&nbsp;const <a href="Poco.Timespan.html" title="class Poco::Timespan">Poco::Timespan</a> &amp; timeout<br />);</p>
<div class="description">
<p>Sets the send timeout for the socket. </p>
</div>
<h3><a name="15204">shutdown</a> <img src="images/virtual.gif" alt="virtual" title="virtual" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">virtual void shutdown();</p>
<div class="description">
<p>Shuts down both the receiving and the sending part of the socket connection. </p>
</div>
<h3><a name="15202">shutdownReceive</a> <img src="images/virtual.gif" alt="virtual" title="virtual" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">virtual void shutdownReceive();</p>
<div class="description">
<p>Shuts down the receiving part of the socket connection. </p>
</div>
<h3><a name="15203">shutdownSend</a> <img src="images/virtual.gif" alt="virtual" title="virtual" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">virtual void shutdownSend();</p>
<div class="description">
<p>Shuts down the sending part of the socket connection. </p>
</div>
<h3><a name="15320">socketError</a></h3>
<p class="decl">int socketError();</p>
<div class="description">
<p>Returns the value of the SO_ERROR socket option. </p>
</div>
<h3><a name="15321">sockfd</a> <img src="images/inline.gif" alt="inline" title="inline" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">int sockfd() const;</p>
<div class="description">
<p>Returns the socket descriptor for the  underlying native socket. </p>
</div>
<h3><a name="15342">error</a> <img src="images/protected.gif" alt="protected" title="protected" style="vertical-align:baseline;" border="0" />  <img src="images/static.gif" alt="static" title="static" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">static void error();</p>
<div class="description">
<p>Throws an appropriate exception for the last error. </p>
</div>
<h3><a name="15343">error</a> <img src="images/protected.gif" alt="protected" title="protected" style="vertical-align:baseline;" border="0" />  <img src="images/static.gif" alt="static" title="static" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">static void error(<br />&nbsp;&nbsp;&nbsp;&nbsp;const std::string &amp; arg<br />);</p>
<div class="description">
<p>Throws an appropriate exception for the last error. </p>
</div>
<h3><a name="15345">error</a> <img src="images/protected.gif" alt="protected" title="protected" style="vertical-align:baseline;" border="0" />  <img src="images/static.gif" alt="static" title="static" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">static void error(<br />&nbsp;&nbsp;&nbsp;&nbsp;int code<br />);</p>
<div class="description">
<p>Throws an appropriate exception for the given error code. </p>
</div>
<h3><a name="15347">error</a> <img src="images/protected.gif" alt="protected" title="protected" style="vertical-align:baseline;" border="0" />  <img src="images/static.gif" alt="static" title="static" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">static void error(<br />&nbsp;&nbsp;&nbsp;&nbsp;int code,<br />&nbsp;&nbsp;&nbsp;&nbsp;const std::string &amp; arg<br />);</p>
<div class="description">
<p>Throws an appropriate exception for the given error code. </p>
</div>
<h3><a name="15333">init</a> <img src="images/protected.gif" alt="protected" title="protected" style="vertical-align:baseline;" border="0" />  <img src="images/virtual.gif" alt="virtual" title="virtual" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">virtual void init(<br />&nbsp;&nbsp;&nbsp;&nbsp;int af<br />);</p>
<div class="description">
<p>Creates the underlying native socket. </p>
<p>Subclasses must implement this method so that it calls <a href="Poco.Net.SocketImpl.html#15335" title="Poco::Net::SocketImpl::initSocket()">initSocket</a>() with the appropriate arguments. </p>
<p>The default implementation creates a stream socket. </p>
</div>
<h3><a name="15335">initSocket</a> <img src="images/protected.gif" alt="protected" title="protected" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">void initSocket(<br />&nbsp;&nbsp;&nbsp;&nbsp;int af,<br />&nbsp;&nbsp;&nbsp;&nbsp;int type,<br />&nbsp;&nbsp;&nbsp;&nbsp;int proto = 0<br />);</p>
<div class="description">
<p>Creates the underlying native socket. </p>
<p>The first argument, af, specifies the address family used by the socket, which should be either AF_INET or AF_INET6. </p>
<p>The second argument, type, specifies the type of the socket, which can be one of SOCK_STREAM, SOCK_DGRAM or SOCK_RAW. </p>
<p>The third argument, proto, is normally set to 0, except for raw sockets. </p>
</div>
<h3><a name="15341">lastError</a> <img src="images/protected.gif" alt="protected" title="protected" style="vertical-align:baseline;" border="0" />  <img src="images/static.gif" alt="static" title="static" style="vertical-align:baseline;" border="0" />  <img src="images/inline.gif" alt="inline" title="inline" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">static int lastError();</p>
<div class="description">
<p>Returns the last error code. </p>
</div>
<h3><a name="15339">reset</a> <img src="images/protected.gif" alt="protected" title="protected" style="vertical-align:baseline;" border="0" /> </h3>
<p class="decl">void reset(<br />&nbsp;&nbsp;&nbsp;&nbsp;int fd = - 1<br />);</p>
<div class="description">
<p>Allows subclasses to set the socket manually, if and only if no valid socket is set yet! </p>
</div>
<p class="footer">POCO C++ Libraries 1.3.6-all<br />
Copyright &copy; 2009, <a href="http://pocoproject.org/" target="_blank">Applied Informatics Software Engineering GmbH and Contributors</a></p>

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