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| author | Timothy Pearson <kb9vqf@pearsoncomputing.net> | 2012-01-26 23:32:43 -0600 |
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| committer | Timothy Pearson <kb9vqf@pearsoncomputing.net> | 2012-01-26 23:32:43 -0600 |
| commit | ea318d1431c89e647598c510c4245c6571aa5f46 (patch) | |
| tree | 996d29b80c30d453dda86d1a23162d441628f169 /doc/html/qsocketdevice.html | |
| parent | aaf89d4b48f69c9293feb187db26362e550b5561 (diff) | |
| download | tqt3-ea318d1431c89e647598c510c4245c6571aa5f46.tar.gz tqt3-ea318d1431c89e647598c510c4245c6571aa5f46.zip | |
Update to latest tqt3 automated conversion
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diff --git a/doc/html/qsocketdevice.html b/doc/html/qsocketdevice.html deleted file mode 100644 index 571bee68f..000000000 --- a/doc/html/qsocketdevice.html +++ /dev/null @@ -1,419 +0,0 @@ -<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> -<!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/src/network/qsocketdevice.cpp:59 --> -<html> -<head> -<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> -<title>TQSocketDevice Class</title> -<style type="text/css"><!-- -fn { margin-left: 1cm; text-indent: -1cm; } -a:link { color: #004faf; text-decoration: none } -a:visited { color: #672967; text-decoration: none } -body { background: #ffffff; color: black; } ---></style> -</head> -<body> - -<table border="0" cellpadding="0" cellspacing="0" width="100%"> -<tr bgcolor="#E5E5E5"> -<td valign=center> - <a href="index.html"> -<font color="#004faf">Home</font></a> - | <a href="classes.html"> -<font color="#004faf">All Classes</font></a> - | <a href="mainclasses.html"> -<font color="#004faf">Main Classes</font></a> - | <a href="annotated.html"> -<font color="#004faf">Annotated</font></a> - | <a href="groups.html"> -<font color="#004faf">Grouped Classes</font></a> - | <a href="functions.html"> -<font color="#004faf">Functions</font></a> -</td> -<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>TQSocketDevice Class Reference<br><small>[<a href="network.html">network module</a>]</small></h1> - -<p>The TQSocketDevice class provides a platform-independent low-level socket API. -<a href="#details">More...</a> -<p><tt>#include <<a href="qsocketdevice-h.html">qsocketdevice.h</a>></tt> -<p>Inherits <a href="qiodevice.html">TQIODevice</a>. -<p><a href="qsocketdevice-members.html">List of all member functions.</a> -<h2>Public Members</h2> -<ul> -<li class=fn>enum <a href="#Type-enum"><b>Type</b></a> { Stream, Datagram }</li> -<li class=fn>enum <a href="#Protocol-enum"><b>Protocol</b></a> { IPv4, IPv6, Unknown }</li> -<li class=fn><a href="#TQSocketDevice"><b>TQSocketDevice</b></a> ( Type type = Stream )</li> -<li class=fn><a href="#TQSocketDevice-2"><b>TQSocketDevice</b></a> ( Type type, Protocol protocol, int dummy )</li> -<li class=fn><a href="#TQSocketDevice-3"><b>TQSocketDevice</b></a> ( int socket, Type type )</li> -<li class=fn>virtual <a href="#~TQSocketDevice"><b>~TQSocketDevice</b></a> ()</li> -<li class=fn>bool <a href="#isValid"><b>isValid</b></a> () const</li> -<li class=fn>Type <a href="#type"><b>type</b></a> () const</li> -<li class=fn>Protocol <a href="#protocol"><b>protocol</b></a> () const</li> -<li class=fn>int <a href="#socket"><b>socket</b></a> () const</li> -<li class=fn>virtual void <a href="#setSocket"><b>setSocket</b></a> ( int socket, Type type )</li> -<li class=fn>bool <a href="#blocking"><b>blocking</b></a> () const</li> -<li class=fn>virtual void <a href="#setBlocking"><b>setBlocking</b></a> ( bool enable )</li> -<li class=fn>bool <a href="#addressReusable"><b>addressReusable</b></a> () const</li> -<li class=fn>virtual void <a href="#setAddressReusable"><b>setAddressReusable</b></a> ( bool enable )</li> -<li class=fn>int <a href="#receiveBufferSize"><b>receiveBufferSize</b></a> () const</li> -<li class=fn>virtual void <a href="#setReceiveBufferSize"><b>setReceiveBufferSize</b></a> ( uint size )</li> -<li class=fn>int <a href="#sendBufferSize"><b>sendBufferSize</b></a> () const</li> -<li class=fn>virtual void <a href="#setSendBufferSize"><b>setSendBufferSize</b></a> ( uint size )</li> -<li class=fn>virtual bool <a href="#connect"><b>connect</b></a> ( const TQHostAddress & addr, Q_UINT16 port )</li> -<li class=fn>virtual bool <a href="#bind"><b>bind</b></a> ( const TQHostAddress & address, Q_UINT16 port )</li> -<li class=fn>virtual bool <a href="#listen"><b>listen</b></a> ( int backlog )</li> -<li class=fn>virtual int <a href="#accept"><b>accept</b></a> ()</li> -<li class=fn>Q_LONG <a href="#bytesAvailable"><b>bytesAvailable</b></a> () const</li> -<li class=fn>Q_LONG <a href="#waitForMore"><b>waitForMore</b></a> ( int msecs, bool * timeout = 0 ) const</li> -<li class=fn>virtual Q_LONG <a href="#readBlock"><b>readBlock</b></a> ( char * data, Q_ULONG maxlen )</li> -<li class=fn>virtual Q_LONG <a href="#writeBlock"><b>writeBlock</b></a> ( const char * data, Q_ULONG len )</li> -<li class=fn>virtual Q_LONG <a href="#writeBlock-2"><b>writeBlock</b></a> ( const char * data, Q_ULONG len, const TQHostAddress & host, Q_UINT16 port )</li> -<li class=fn>Q_UINT16 <a href="#port"><b>port</b></a> () const</li> -<li class=fn>Q_UINT16 <a href="#peerPort"><b>peerPort</b></a> () const</li> -<li class=fn>TQHostAddress <a href="#address"><b>address</b></a> () const</li> -<li class=fn>TQHostAddress <a href="#peerAddress"><b>peerAddress</b></a> () const</li> -<li class=fn>enum <a href="#Error-enum"><b>Error</b></a> { NoError, AlreadyBound, Inaccessible, NoResources, InternalError, Bug = InternalError, Impossible, NoFiles, ConnectionRefused, NetworkFailure, UnknownError }</li> -<li class=fn>Error <a href="#error"><b>error</b></a> () const</li> -</ul> -<h2>Protected Members</h2> -<ul> -<li class=fn>void <a href="#setError"><b>setError</b></a> ( Error err )</li> -</ul> -<hr><a name="details"></a><h2>Detailed Description</h2> - - -The TQSocketDevice class provides a platform-independent low-level socket API. - -<p> - -<p> This class provides a low level API for working with sockets. Users of -this class are assumed to have networking experience. For most users the -<a href="qsocket.html">TQSocket</a> class provides a much easier and high level alternative, but -certain things (like UDP) can't be done with TQSocket and if you need a -platform-independent API for those, TQSocketDevice is the right choice. -<p> The essential purpose of the class is to provide a <a href="qiodevice.html">TQIODevice</a> that -works on sockets, wrapped in a platform-independent API. -<p> When calling <a href="#connect">connect</a>() or <a href="#bind">bind</a>(), TQSocketDevice detects the -protocol family (IPv4, IPv6) automatically. Passing the protocol -family to TQSocketDevice's constructor or to <a href="#setSocket">setSocket</a>() forces -creation of a socket device of a specific protocol. If not set, the -protocol will be detected at the first call to connect() or bind(). -<p> <p>See also <a href="qsocket.html">TQSocket</a>, <a href="qsocketnotifier.html">TQSocketNotifier</a>, <a href="qhostaddress.html">TQHostAddress</a>, and <a href="io.html">Input/Output and Networking</a>. - -<hr><h2>Member Type Documentation</h2> -<h3 class=fn><a name="Error-enum"></a>TQSocketDevice::Error</h3> - -<p> This enum type describes the error states of TQSocketDevice. -<ul> -<li><tt>TQSocketDevice::NoError</tt> - No error has occurred. -<li><tt>TQSocketDevice::AlreadyBound</tt> - The device is already bound, according to <a href="#bind">bind</a>(). -<li><tt>TQSocketDevice::Inaccessible</tt> - The operating system or firewall prohibited -the action. -<li><tt>TQSocketDevice::NoResources</tt> - The operating system ran out of a resource. -<li><tt>TQSocketDevice::InternalError</tt> - An internal error occurred in TQSocketDevice. -<li><tt>TQSocketDevice::Impossible</tt> - An attempt was made to do something which makes -no sense. For example: -<pre> - ::close( sd->socket() ); - sd->writeBlock( someData, 42 ); - </pre> - -The libc ::close() closes the socket, but TQSocketDevice is not aware -of this. So when you call <a href="#writeBlock">writeBlock</a>(), the impossible happens. -<li><tt>TQSocketDevice::NoFiles</tt> - The operating system will not let TQSocketDevice open -another file. -<li><tt>TQSocketDevice::ConnectionRefused</tt> - A connection attempt was rejected by the -peer. -<li><tt>TQSocketDevice::NetworkFailure</tt> - There is a network failure. -<li><tt>TQSocketDevice::UnknownError</tt> - The operating system did something -unexpected. -</ul> -<h3 class=fn><a name="Protocol-enum"></a>TQSocketDevice::Protocol</h3> - -<p> This enum type describes the protocol family of the socket. Possible values -are: -<ul> -<li><tt>TQSocketDevice::IPv4</tt> - The socket is an IPv4 socket. -<li><tt>TQSocketDevice::IPv6</tt> - The socket is an IPv6 socket. -<li><tt>TQSocketDevice::Unknown</tt> - The protocol family of the socket is not known. This can -happen if you use TQSocketDevice with an already existing socket; it -tries to determine the protocol family, but this can fail if the -protocol family is not known to TQSocketDevice. -</ul><p> <p>See also <a href="#protocol">protocol</a>() and <a href="#setSocket">setSocket</a>(). - -<h3 class=fn><a name="Type-enum"></a>TQSocketDevice::Type</h3> - -<p> This enum type describes the type of the socket: -<ul> -<li><tt>TQSocketDevice::Stream</tt> - a stream socket (TCP, usually) -<li><tt>TQSocketDevice::Datagram</tt> - a datagram socket (UDP, usually) -</ul> -<hr><h2>Member Function Documentation</h2> -<h3 class=fn><a name="TQSocketDevice"></a>TQSocketDevice::TQSocketDevice ( <a href="qsocketdevice.html#Type-enum">Type</a> type = Stream ) -</h3> -Creates a TQSocketDevice object for a stream or datagram socket. -<p> The <em>type</em> argument must be either <a href="#Type-enum">TQSocketDevice::Stream</a> for a -reliable, connection-oriented TCP socket, or <a href="#Type-enum">TQSocketDevice::Datagram</a> for an unreliable UDP socket. -<p> The socket is created as an IPv4 socket. -<p> <p>See also <a href="#blocking">blocking</a>() and <a href="#protocol">protocol</a>(). - -<h3 class=fn><a name="TQSocketDevice-2"></a>TQSocketDevice::TQSocketDevice ( <a href="qsocketdevice.html#Type-enum">Type</a> type, <a href="qsocketdevice.html#Protocol-enum">Protocol</a> protocol, int dummy ) -</h3> -Creates a TQSocketDevice object for a stream or datagram socket. -<p> The <em>type</em> argument must be either <a href="#Type-enum">TQSocketDevice::Stream</a> for a -reliable, connection-oriented TCP socket, or <a href="#Type-enum">TQSocketDevice::Datagram</a> for an unreliable UDP socket. -<p> The <em>protocol</em> indicates whether the socket should be of type IPv4 -or IPv6. Passing <a href="#Protocol-enum">Unknown</a> is not meaningful in this context and you -should avoid using (it creates an IPv4 socket, but your code is not easily -readable). -<p> The argument <em>dummy</em> is necessary for compatibility with some -compilers. -<p> <p>See also <a href="#blocking">blocking</a>() and <a href="#protocol">protocol</a>(). - -<h3 class=fn><a name="TQSocketDevice-3"></a>TQSocketDevice::TQSocketDevice ( int socket, <a href="qsocketdevice.html#Type-enum">Type</a> type ) -</h3> -Creates a TQSocketDevice object for the existing socket <em>socket</em>. -<p> The <em>type</em> argument must match the actual socket type; use <a href="#Type-enum">TQSocketDevice::Stream</a> for a reliable, connection-oriented TCP -socket, or <a href="#Type-enum">TQSocketDevice::Datagram</a> for an unreliable, -connectionless UDP socket. - -<h3 class=fn><a name="~TQSocketDevice"></a>TQSocketDevice::~TQSocketDevice ()<tt> [virtual]</tt> -</h3> -Destroys the socket device and closes the socket if it is open. - -<h3 class=fn>int <a name="accept"></a>TQSocketDevice::accept ()<tt> [virtual]</tt> -</h3> -Extracts the first connection from the queue of pending -connections for this socket and returns a new socket identifier. -Returns -1 if the operation failed. -<p> <p>See also <a href="#bind">bind</a>() and <a href="#listen">listen</a>(). - -<h3 class=fn><a href="qhostaddress.html">TQHostAddress</a> <a name="address"></a>TQSocketDevice::address () const -</h3> -Returns the address of this socket device. This may be 0.0.0.0 for -a while, but is set to something sensible as soon as a sensible -value is available. - -<h3 class=fn>bool <a name="addressReusable"></a>TQSocketDevice::addressReusable () const -</h3> -Returns TRUE if the address of this socket can be used by other -sockets at the same time, and FALSE if this socket claims -exclusive ownership. -<p> <p>See also <a href="#setAddressReusable">setAddressReusable</a>(). - -<h3 class=fn>bool <a name="bind"></a>TQSocketDevice::bind ( const <a href="qhostaddress.html">TQHostAddress</a> & address, Q_UINT16 port )<tt> [virtual]</tt> -</h3> -Assigns a name to an unnamed socket. The name is the host address -<em>address</em> and the port number <em>port</em>. If the operation succeeds, -<a href="#bind">bind</a>() returns TRUE; otherwise it returns FALSE without changing -what <a href="#port">port</a>() and <a href="#address">address</a>() return. -<p> bind() is used by servers for setting up incoming connections. -Call bind() before <a href="#listen">listen</a>(). - -<h3 class=fn>bool <a name="blocking"></a>TQSocketDevice::blocking () const -</h3> -Returns TRUE if the socket is valid and in blocking mode; -otherwise returns FALSE. -<p> Note that this function does not set <a href="#error">error</a>(). -<p> <b>Warning:</b> On Windows, this function always returns TRUE since the -ioctlsocket() function is broken. -<p> <p>See also <a href="#setBlocking">setBlocking</a>() and <a href="#isValid">isValid</a>(). - -<h3 class=fn>Q_LONG <a name="bytesAvailable"></a>TQSocketDevice::bytesAvailable () const -</h3> -Returns the number of bytes available for reading, or -1 if an -error occurred. -<p> <b>Warning:</b> On Microsoft Windows, we use the ioctlsocket() function -to determine the number of bytes queued on the socket. According -to Microsoft (KB Q125486), ioctlsocket() sometimes returns an -incorrect number. The only safe way to determine the amount of -data on the socket is to read it using <a href="#readBlock">readBlock</a>(). <a href="qsocket.html">TQSocket</a> has -workarounds to deal with this problem. - -<h3 class=fn>bool <a name="connect"></a>TQSocketDevice::connect ( const <a href="qhostaddress.html">TQHostAddress</a> & addr, Q_UINT16 port )<tt> [virtual]</tt> -</h3> -Connects to the IP address and port specified by <em>addr</em> and <em>port</em>. Returns TRUE if it establishes a connection; otherwise returns FALSE. -If it returns FALSE, <a href="#error">error</a>() explains why. -<p> Note that error() commonly returns NoError for non-blocking -sockets; this just means that you can call <a href="#connect">connect</a>() again in a -little while and it'll probably succeed. - -<h3 class=fn><a href="qsocketdevice.html#Error-enum">Error</a> <a name="error"></a>TQSocketDevice::error () const -</h3> -Returns the first error seen. - -<h3 class=fn>bool <a name="isValid"></a>TQSocketDevice::isValid () const -</h3> -Returns TRUE if this is a valid socket; otherwise returns FALSE. -<p> <p>See also <a href="#socket">socket</a>(). - -<h3 class=fn>bool <a name="listen"></a>TQSocketDevice::listen ( int backlog )<tt> [virtual]</tt> -</h3> -Specifies how many pending connections a server socket can have. -Returns TRUE if the operation was successful; otherwise returns -FALSE. A <em>backlog</em> value of 50 is quite common. -<p> The <a href="#listen">listen</a>() call only applies to sockets where <a href="#type">type</a>() is <a href="#Type-enum">Stream</a>, i.e. not to <a href="#Type-enum">Datagram</a> sockets. listen() must not be -called before <a href="#bind">bind</a>() or after <a href="#accept">accept</a>(). -<p> <p>See also <a href="#bind">bind</a>() and <a href="#accept">accept</a>(). - -<h3 class=fn><a href="qhostaddress.html">TQHostAddress</a> <a name="peerAddress"></a>TQSocketDevice::peerAddress () const -</h3> -Returns the address of the port this socket device is connected -to. This may be 0.0.0.0 for a while, but is set to something -sensible as soon as a sensible value is available. -<p> Note that for Datagram sockets, this is the source port of the -last packet received. - -<h3 class=fn>Q_UINT16 <a name="peerPort"></a>TQSocketDevice::peerPort () const -</h3> -Returns the port number of the port this socket device is -connected to. This may be 0 for a while, but is set to something -sensible as soon as a sensible value is available. -<p> Note that for Datagram sockets, this is the source port of the -last packet received, and that it is in native byte order. - -<h3 class=fn>Q_UINT16 <a name="port"></a>TQSocketDevice::port () const -</h3> -Returns the port number of this socket device. This may be 0 for a -while, but is set to something sensible as soon as a sensible -value is available. -<p> Note that TQt always uses native byte order, i.e. 67 is 67 in TQt; -there is no need to call htons(). - -<h3 class=fn><a href="qsocketdevice.html#Protocol-enum">Protocol</a> <a name="protocol"></a>TQSocketDevice::protocol () const -</h3> -Returns the socket's protocol family, which is one of <a href="#Protocol-enum">Unknown</a>, <a href="#Protocol-enum">IPv4</a>, -or <a href="#Protocol-enum">IPv6</a>. -<p> TQSocketDevice either creates a socket with a well known protocol family or -it uses an already existing socket. In the first case, this function -returns the protocol family it was constructed with. In the second case, it -tries to determine the protocol family of the socket; if this fails, it -returns <a href="#Protocol-enum">Unknown</a>. -<p> <p>See also <a href="#Protocol-enum">Protocol</a> and <a href="#setSocket">setSocket</a>(). - -<h3 class=fn>Q_LONG <a name="readBlock"></a>TQSocketDevice::readBlock ( char * data, Q_ULONG maxlen )<tt> [virtual]</tt> -</h3> -Reads <em>maxlen</em> bytes from the socket into <em>data</em> and returns the -number of bytes read. Returns -1 if an error occurred. Returning 0 -is not an error. For Stream sockets, 0 is returned when the remote -host closes the connection. For Datagram sockets, 0 is a valid -datagram size. - -<p>Reimplemented from <a href="qiodevice.html#readBlock">TQIODevice</a>. -<h3 class=fn>int <a name="receiveBufferSize"></a>TQSocketDevice::receiveBufferSize () const -</h3> -Returns the size of the operating system receive buffer. -<p> <p>See also <a href="#setReceiveBufferSize">setReceiveBufferSize</a>(). - -<h3 class=fn>int <a name="sendBufferSize"></a>TQSocketDevice::sendBufferSize () const -</h3> -Returns the size of the operating system send buffer. -<p> <p>See also <a href="#setSendBufferSize">setSendBufferSize</a>(). - -<h3 class=fn>void <a name="setAddressReusable"></a>TQSocketDevice::setAddressReusable ( bool enable )<tt> [virtual]</tt> -</h3> -Sets the address of this socket to be usable by other sockets too -if <em>enable</em> is TRUE, and to be used exclusively by this socket if -<em>enable</em> is FALSE. -<p> When a socket is reusable, other sockets can use the same port -number (and IP address), which is generally useful. Of course -other sockets cannot use the same -(address,port,peer-address,peer-port) 4-tuple as this socket, so -there is no risk of confusing the two TCP connections. -<p> <p>See also <a href="#addressReusable">addressReusable</a>(). - -<h3 class=fn>void <a name="setBlocking"></a>TQSocketDevice::setBlocking ( bool enable )<tt> [virtual]</tt> -</h3> -Makes the socket blocking if <em>enable</em> is TRUE or nonblocking if -<em>enable</em> is FALSE. -<p> Sockets are blocking by default, but we recommend using -nonblocking socket operations, especially for GUI programs that -need to be responsive. -<p> <b>Warning:</b> On Windows, this function should be used with care since -whenever you use a <a href="qsocketnotifier.html">TQSocketNotifier</a> on Windows, the socket is -immediately made nonblocking. -<p> <p>See also <a href="#blocking">blocking</a>() and <a href="#isValid">isValid</a>(). - -<h3 class=fn>void <a name="setError"></a>TQSocketDevice::setError ( <a href="qsocketdevice.html#Error-enum">Error</a> err )<tt> [protected]</tt> -</h3> -Allows subclasses to set the error state to <em>err</em>. - -<h3 class=fn>void <a name="setReceiveBufferSize"></a>TQSocketDevice::setReceiveBufferSize ( uint size )<tt> [virtual]</tt> -</h3> -Sets the size of the operating system receive buffer to <em>size</em>. -<p> The operating system receive buffer size effectively limits two -things: how much data can be in transit at any one moment, and how -much data can be received in one iteration of the main event loop. -<p> The default is operating system-dependent. A socket that receives -large amounts of data is probably best with a buffer size of -49152. - -<h3 class=fn>void <a name="setSendBufferSize"></a>TQSocketDevice::setSendBufferSize ( uint size )<tt> [virtual]</tt> -</h3> -Sets the size of the operating system send buffer to <em>size</em>. -<p> The operating system send buffer size effectively limits how much -data can be in transit at any one moment. -<p> The default is operating system-dependent. A socket that sends -large amounts of data is probably best with a buffer size of -49152. - -<h3 class=fn>void <a name="setSocket"></a>TQSocketDevice::setSocket ( int socket, <a href="qsocketdevice.html#Type-enum">Type</a> type )<tt> [virtual]</tt> -</h3> -Sets the socket device to operate on the existing socket <em>socket</em>. -<p> The <em>type</em> argument must match the actual socket type; use <a href="#Type-enum">TQSocketDevice::Stream</a> for a reliable, connection-oriented TCP -socket, or <a href="#Type-enum">TQSocketDevice::Datagram</a> for an unreliable, -connectionless UDP socket. -<p> Any existing socket is closed. -<p> <p>See also <a href="#isValid">isValid</a>() and <a href="qiodevice.html#close">close</a>(). - -<h3 class=fn>int <a name="socket"></a>TQSocketDevice::socket () const -</h3> -Returns the socket number, or -1 if it is an invalid socket. -<p> <p>See also <a href="#isValid">isValid</a>() and <a href="#type">type</a>(). - -<h3 class=fn><a href="qsocketdevice.html#Type-enum">Type</a> <a name="type"></a>TQSocketDevice::type () const -</h3> - -<p> Returns the socket type which is either <a href="#Type-enum">TQSocketDevice::Stream</a> -or <a href="#Type-enum">TQSocketDevice::Datagram</a>. -<p> <p>See also <a href="#socket">socket</a>(). - -<h3 class=fn>Q_LONG <a name="waitForMore"></a>TQSocketDevice::waitForMore ( int msecs, bool * timeout = 0 ) const -</h3> -Wait up to <em>msecs</em> milliseconds for more data to be available. If -<em>msecs</em> is -1 the call will block indefinitely. -<p> Returns the number of bytes available for reading, or -1 if an -error occurred. -<p> If <em>timeout</em> is non-null and no error occurred (i.e. it does not -return -1): this function sets <em>*timeout</em> to TRUE, if the reason -for returning was that the timeout was reached; otherwise it sets -<em>*timeout</em> to FALSE. This is useful to find out if the peer -closed the connection. -<p> <b>Warning:</b> This is a blocking call and should be avoided in event -driven applications. -<p> <p>See also <a href="#bytesAvailable">bytesAvailable</a>(). - -<h3 class=fn>Q_LONG <a name="writeBlock"></a>TQSocketDevice::writeBlock ( const char * data, Q_ULONG len )<tt> [virtual]</tt> -</h3> -Writes <em>len</em> bytes to the socket from <em>data</em> and returns the -number of bytes written. Returns -1 if an error occurred. -<p> This is used for <a href="#Type-enum">TQSocketDevice::Stream</a> sockets. - -<p>Reimplemented from <a href="qiodevice.html#writeBlock">TQIODevice</a>. -<h3 class=fn>Q_LONG <a name="writeBlock-2"></a>TQSocketDevice::writeBlock ( const char * data, Q_ULONG len, const <a href="qhostaddress.html">TQHostAddress</a> & host, Q_UINT16 port )<tt> [virtual]</tt> -</h3> -This is an overloaded member function, provided for convenience. It behaves essentially like the above function. -<p> Writes <em>len</em> bytes to the socket from <em>data</em> and returns the -number of bytes written. Returns -1 if an error occurred. -<p> This is used for <a href="#Type-enum">TQSocketDevice::Datagram</a> sockets. You must -specify the <em>host</em> and <em>port</em> of the destination of the data. - -<!-- eof --> -<hr><p> -This file is part of the <a href="index.html">TQt toolkit</a>. -Copyright © 1995-2007 -<a href="http://www.trolltech.com/">Trolltech</a>. All Rights Reserved.<p><address><hr><div align=center> -<table width=100% cellspacing=0 border=0><tr> -<td>Copyright © 2007 -<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a> -<td align=right><div align=right>TQt 3.3.8</div> -</table></div></address></body> -</html> |