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Breadcrumbs go here --> <li><a href="modules.html">Modules</a></li> <li><a href="qt3support.html">Qt3Support</a></li> <li>Q3ServerSocket</li> </ul> </div> <div class="toolbuttons toolblock"> <ul> <li id="smallA" class="t_button">A</li> <li id="medA" class="t_button active">A</li> <li id="bigA" class="t_button">A</li> <li id="print" class="t_button"><a href="javascript:this.print();"> <span>Print</span></a></li> </ul> </div> </div> <div class="content mainContent"> <div class="toc"> <h3><a name="toc">Contents</a></h3> <ul> <li class="level1"><a href="#public-functions">Public Functions</a></li> <li class="level1"><a href="#protected-functions">Protected Functions</a></li> <li class="level1"><a href="#details">Detailed Description</a></li> </ul> </div> <h1 class="title">Q3ServerSocket Class Reference</h1> <!-- $$$Q3ServerSocket-brief --> <p>The Q3ServerSocket class provides a TCP-based server. <a href="#details">More...</a></p> <!-- @@@Q3ServerSocket --> <pre class="cpp"> <span class="preprocessor">#include <Q3ServerSocket></span></pre><p><b>This class is part of the Qt 3 support library.</b> It is provided to keep old source code working. We strongly advise against using it in new code. See <a href="porting4.html#qserversocket">Porting to Qt 4</a> for more information.</p> <p><b>Inherits: </b><a href="qobject.html">QObject</a>.</p> <ul> <li><a href="q3serversocket-members.html">List of all members, including inherited members</a></li> </ul> <a name="public-functions"></a> <h2>Public Functions</h2> <table class="alignedsummary"> <tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="q3serversocket.html#Q3ServerSocket">Q3ServerSocket</a></b> ( Q_UINT16 <i>port</i>, int <i>backlog</i> = 1, QObject * <i>parent</i> = 0, const char * <i>name</i> = 0 )</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="q3serversocket.html#Q3ServerSocket-2">Q3ServerSocket</a></b> ( const QHostAddress & <i>address</i>, Q_UINT16 <i>port</i>, int <i>backlog</i> = 1, QObject * <i>parent</i> = 0, const char * <i>name</i> = 0 )</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="q3serversocket.html#Q3ServerSocket-3">Q3ServerSocket</a></b> ( QObject * <i>parent</i> = 0, const char * <i>name</i> = 0 )</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> virtual </td><td class="memItemRight bottomAlign"><b><a href="q3serversocket.html#dtor.Q3ServerSocket">~Q3ServerSocket</a></b> ()</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> QHostAddress </td><td class="memItemRight bottomAlign"><b><a href="q3serversocket.html#address">address</a></b> () const</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> virtual void </td><td class="memItemRight bottomAlign"><b><a href="q3serversocket.html#newConnection">newConnection</a></b> ( int <i>socket</i> ) = 0</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> bool </td><td class="memItemRight bottomAlign"><b><a href="q3serversocket.html#ok">ok</a></b> () const</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> Q_UINT16 </td><td class="memItemRight bottomAlign"><b><a href="q3serversocket.html#port">port</a></b> () const</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> virtual void </td><td class="memItemRight bottomAlign"><b><a href="q3serversocket.html#setSocket">setSocket</a></b> ( int <i>socket</i> )</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> int </td><td class="memItemRight bottomAlign"><b><a href="q3serversocket.html#socket">socket</a></b> () const</td></tr> </table> <ul> <li class="fn">29 public functions inherited from <a href="qobject.html#public-functions">QObject</a></li> </ul> <a name="protected-functions"></a> <h2>Protected Functions</h2> <table class="alignedsummary"> <tr><td class="memItemLeft rightAlign topAlign"> Q3SocketDevice * </td><td class="memItemRight bottomAlign"><b><a href="q3serversocket.html#socketDevice">socketDevice</a></b> ()</td></tr> </table> <ul> <li class="fn">8 protected functions inherited from <a href="qobject.html#protected-functions">QObject</a></li> </ul> <h3>Additional Inherited Members</h3> <ul> <li class="fn">1 property inherited from <a href="qobject.html#properties">QObject</a></li> <li class="fn">1 public slot inherited from <a href="qobject.html#public-slots">QObject</a></li> <li class="fn">1 signal inherited from <a href="qobject.html#signals">QObject</a></li> <li class="fn">7 static public members inherited from <a href="qobject.html#static-public-members">QObject</a></li> </ul> <a name="details"></a> <!-- $$$Q3ServerSocket-description --> <div class="descr"> <h2>Detailed Description</h2> <p>The Q3ServerSocket class provides a TCP-based server.</p> <p>This class is a convenience class for accepting incoming TCP connections. You can specify the port or have Q3ServerSocket pick one, and listen on just one address or on all the machine's addresses.</p> <p>Using the API is very simple: subclass Q3ServerSocket, call the constructor of your choice, and implement <a href="q3serversocket.html#newConnection">newConnection</a>() to handle new incoming connections. There is nothing more to do.</p> <p>(Note that due to lack of support in the underlying APIs, Q3ServerSocket cannot accept or reject connections conditionally.)</p> </div> <p><b>See also </b><a href="q3socket.html">Q3Socket</a>, <a href="q3socketdevice.html">Q3SocketDevice</a>, <a href="qhostaddress.html">QHostAddress</a>, and <a href="qsocketnotifier.html">QSocketNotifier</a>.</p> <!-- @@@Q3ServerSocket --> <div class="func"> <h2>Member Function Documentation</h2> <!-- $$$Q3ServerSocket[overload1]$$$Q3ServerSocketQ_UINT16intQObject*constchar* --> <h3 class="fn"><a name="Q3ServerSocket"></a>Q3ServerSocket::<span class="name">Q3ServerSocket</span> ( <span class="type"><a href="qtglobal-qt3.html#Q_UINT16-typedef">Q_UINT16</a></span> <i>port</i>, <span class="type">int</span> <i>backlog</i> = 1, <span class="type"><a href="qobject.html">QObject</a></span> * <i>parent</i> = 0, const <span class="type">char</span> * <i>name</i> = 0 )</h3> <p>Creates a server socket object, that will serve the given <i>port</i> on all the addresses of this host. If <i>port</i> is 0, <a href="q3serversocket.html" class="compat">Q3ServerSocket</a> will pick a suitable port in a system-dependent manner. Use <i>backlog</i> to specify how many pending connections the server can have.</p> <p>The <i>parent</i> and <i>name</i> arguments are passed on to the <a href="qobject.html">QObject</a> constructor.</p> <p><b>Warning:</b> On Tru64 Unix systems a value of 0 for <i>backlog</i> means that you don't accept any connections at all; you should specify a value larger than 0.</p> <!-- @@@Q3ServerSocket --> <!-- $$$Q3ServerSocket$$$Q3ServerSocketconstQHostAddress&Q_UINT16intQObject*constchar* --> <h3 class="fn"><a name="Q3ServerSocket-2"></a>Q3ServerSocket::<span class="name">Q3ServerSocket</span> ( const <span class="type"><a href="qhostaddress.html">QHostAddress</a></span> & <i>address</i>, <span class="type"><a href="qtglobal-qt3.html#Q_UINT16-typedef">Q_UINT16</a></span> <i>port</i>, <span class="type">int</span> <i>backlog</i> = 1, <span class="type"><a href="qobject.html">QObject</a></span> * <i>parent</i> = 0, const <span class="type">char</span> * <i>name</i> = 0 )</h3> <p>Creates a server socket object, that will serve the given <i>port</i> only on the given <i>address</i>. Use <i>backlog</i> to specify how many pending connections the server can have.</p> <p>The <i>parent</i> and <i>name</i> arguments are passed on to the <a href="qobject.html">QObject</a> constructor.</p> <p><b>Warning:</b> On Tru64 Unix systems a value of 0 for <i>backlog</i> means that you don't accept any connections at all; you should specify a value larger than 0.</p> <!-- @@@Q3ServerSocket --> <!-- $$$Q3ServerSocket$$$Q3ServerSocketQObject*constchar* --> <h3 class="fn"><a name="Q3ServerSocket-3"></a>Q3ServerSocket::<span class="name">Q3ServerSocket</span> ( <span class="type"><a href="qobject.html">QObject</a></span> * <i>parent</i> = 0, const <span class="type">char</span> * <i>name</i> = 0 )</h3> <p>Construct an empty server socket.</p> <p>This constructor, in combination with <a href="q3serversocket.html#setSocket">setSocket</a>(), allows us to use the <a href="q3serversocket.html" class="compat">Q3ServerSocket</a> class as a wrapper for other socket types (e.g. Unix Domain Sockets under Unix).</p> <p>The <i>parent</i> and <i>name</i> arguments are passed on to the <a href="qobject.html">QObject</a> constructor.</p> <p><b>See also </b><a href="q3serversocket.html#setSocket">setSocket</a>().</p> <!-- @@@Q3ServerSocket --> <!-- $$$~Q3ServerSocket[overload1]$$$~Q3ServerSocket --> <h3 class="fn"><a name="dtor.Q3ServerSocket"></a>Q3ServerSocket::<span class="name">~Q3ServerSocket</span> ()<tt> [virtual]</tt></h3> <p>Destroys the socket.</p> <p>This causes any backlogged connections (connections that have reached the host, but not yet been completely set up by calling <a href="q3socketdevice.html#accept">Q3SocketDevice::accept</a>()) to be severed.</p> <p>Existing connections continue to exist; this only affects the acceptance of new connections.</p> <!-- @@@~Q3ServerSocket --> <!-- $$$address[overload1]$$$address --> <h3 class="fn"><a name="address"></a><span class="type"><a href="qhostaddress.html">QHostAddress</a></span> Q3ServerSocket::<span class="name">address</span> () const</h3> <p>Returns the address on which this object listens, or 0.0.0.0 if this object listens on more than one address. <a href="q3serversocket.html#ok">ok</a>() must be true before calling this function.</p> <p><b>See also </b><a href="q3serversocket.html#port">port</a>() and <a href="q3socketdevice.html#address">Q3SocketDevice::address</a>().</p> <!-- @@@address --> <!-- $$$newConnection[overload1]$$$newConnectionint --> <h3 class="fn"><a name="newConnection"></a><span class="type">void</span> Q3ServerSocket::<span class="name">newConnection</span> ( <span class="type">int</span> <i>socket</i> )<tt> [pure virtual]</tt></h3> <p>This pure virtual function is responsible for setting up a new incoming connection. <i>socket</i> is the fd (file descriptor) for the newly accepted connection.</p> <!-- @@@newConnection --> <!-- $$$ok[overload1]$$$ok --> <h3 class="fn"><a name="ok"></a><span class="type">bool</span> Q3ServerSocket::<span class="name">ok</span> () const</h3> <p>Returns true if the construction succeeded; otherwise returns false.</p> <!-- @@@ok --> <!-- $$$port[overload1]$$$port --> <h3 class="fn"><a name="port"></a><span class="type"><a href="qtglobal-qt3.html#Q_UINT16-typedef">Q_UINT16</a></span> Q3ServerSocket::<span class="name">port</span> () const</h3> <p>Returns the port number on which this server socket listens. This is always non-zero; if you specify 0 in the constructor, <a href="q3serversocket.html" class="compat">Q3ServerSocket</a> will pick a non-zero port itself. <a href="q3serversocket.html#ok">ok</a>() must be true before calling this function.</p> <p><b>See also </b><a href="q3serversocket.html#address">address</a>() and <a href="q3socketdevice.html#port">Q3SocketDevice::port</a>().</p> <!-- @@@port --> <!-- $$$setSocket[overload1]$$$setSocketint --> <h3 class="fn"><a name="setSocket"></a><span class="type">void</span> Q3ServerSocket::<span class="name">setSocket</span> ( <span class="type">int</span> <i>socket</i> )<tt> [virtual]</tt></h3> <p>Sets the socket to use <i>socket</i>. bind() and listen() should already have been called for <i>socket</i>.</p> <p>This allows us to use the <a href="q3serversocket.html" class="compat">Q3ServerSocket</a> class as a wrapper for other socket types (e.g. Unix Domain Sockets).</p> <p><b>See also </b><a href="q3serversocket.html#socket">socket</a>().</p> <!-- @@@setSocket --> <!-- $$$socket[overload1]$$$socket --> <h3 class="fn"><a name="socket"></a><span class="type">int</span> Q3ServerSocket::<span class="name">socket</span> () const</h3> <p>Returns the operating system socket.</p> <p><b>See also </b><a href="q3serversocket.html#setSocket">setSocket</a>().</p> <!-- @@@socket --> <!-- $$$socketDevice[overload1]$$$socketDevice --> <h3 class="fn"><a name="socketDevice"></a><span class="type"><a href="q3socketdevice.html">Q3SocketDevice</a></span> * Q3ServerSocket::<span class="name">socketDevice</span> ()<tt> [protected]</tt></h3> <p>Returns a pointer to the internal socket device. The returned pointer is 0 if there is no connection or pending connection.</p> <p>There is normally no need to manipulate the socket device directly since this class does all the necessary setup for most client or server socket applications.</p> <!-- @@@socketDevice --> </div> </div> </div> </div> <div class="ft"> <span></span> </div> </div> <div class="footer"> <p> <acronym title="Copyright">©</acronym> 2013 Digia Plc and/or its subsidiaries. Documentation contributions included herein are the copyrights of their respective owners.</p> <br /> <p> The documentation provided herein is licensed under the terms of the <a href="http://www.gnu.org/licenses/fdl.html">GNU Free Documentation License version 1.3</a> as published by the Free Software Foundation.</p> <p> Documentation sources may be obtained from <a href="http://www.qt-project.org"> www.qt-project.org</a>.</p> <br /> <p> Digia, Qt and their respective logos are trademarks of Digia Plc in Finland and/or other countries worldwide. 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