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<HTML>
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<TITLE>X11::Protocol::Connection - Perl module abstract base class for X11 client to server connections</TITLE>
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<LINK REV="made" HREF="mailto:">
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<TR><TD CLASS=block VALIGN=MIDDLE WIDTH=100% BGCOLOR="#cccccc">
<STRONG><P CLASS=block> X11::Protocol::Connection - Perl module abstract base class for X11 client to server connections</P></STRONG>
</TD></TR>
</TABLE>
<A NAME="__index__"></A>
<!-- INDEX BEGIN -->
<UL>
<LI><A HREF="#name">NAME</A></LI><LI><A HREF="#supportedplatforms">SUPPORTED PLATFORMS</A></LI>
<LI><A HREF="#synopsis">SYNOPSIS</A></LI>
<LI><A HREF="#description">DESCRIPTION</A></LI>
<UL>
<LI><A HREF="#open">open</A></LI>
<LI><A HREF="#give">give</A></LI>
<LI><A HREF="#get">get</A></LI>
<LI><A HREF="#fh">fh</A></LI>
</UL>
<LI><A HREF="#author">AUTHOR</A></LI>
<LI><A HREF="#see also">SEE ALSO</A></LI>
</UL>
<!-- INDEX END -->
<HR>
<P>
<H1><A NAME="name">NAME</A></H1>
<P>X11::Protocol::Connection - Perl module abstract base class for X11 client to server connections</P>
<P>
<HR>
<H1><A NAME="supportedplatforms">SUPPORTED PLATFORMS</A></H1>
<UL>
<LI>Linux</LI>
<LI>Solaris</LI>
</UL>
<HR>
<H1><A NAME="synopsis">SYNOPSIS</A></H1>
<PRE>
# In connection object module
package X11::Protocol::Connection::CarrierPigeon;
use X11::Protocol::Connection;
@ISA = ('X11::Protocol::Connection');
sub open { ... }
sub give { ... }
sub get { ... }
sub fh { ... }
...</PRE>
<PRE>
# In program
$connection = X11::Protocol::Connection::CarrierPigeon
->open($host, $display_number);
$x = X11::Protocol->new($connection);</PRE>
<PRE>
$connection->give($data);</PRE>
<PRE>
$reply = unpack("I", $connection->get(4));</PRE>
<PRE>
use IO::Select;
$sel = IO::select->new($connection->fh);
if ($sel->can_read == $connection->fh) ...</PRE>
<P>
<HR>
<H1><A NAME="description">DESCRIPTION</A></H1>
<P>This module is an abstract base class for the various
X11::Protocol::Connection::* modules that provide connections to X
servers for the X11::Protocol module. It provides stubs for the
following methods:</P>
<P>
<H2><A NAME="open">open</A></H2>
<PRE>
$conn = X11::Protocol::Connection::Foo->open($host, $display_num)</PRE>
<P>Open a connection to the specified display (numbered from 0) on the
specified $host.</P>
<P>
<H2><A NAME="give">give</A></H2>
<PRE>
$conn->give($data)</PRE>
<P>Send the given data to the server. Normally, this method is used only
by the protocol module itself.</P>
<P>
<H2><A NAME="get">get</A></H2>
<PRE>
$data = $conn->get($n)</PRE>
<P>Read $n bytes of data from the server. Normally, this method is used
only by the protocol module itself.</P>
<P>
<H2><A NAME="fh">fh</A></H2>
<PRE>
$filehandle = $conn->fh</PRE>
<P>Return an object suitable for use as a filehandle. This is mainly
useful for doing <A HREF="../../../../lib/Pod/perlfunc.html#item_select"><CODE>select()</CODE></A> and other such system calls.</P>
<P>
<HR>
<H1><A NAME="author">AUTHOR</A></H1>
<P>Stephen McCamant <<A HREF="mailto:alias@mcs.com">alias@mcs.com</A>>.</P>
<P>
<HR>
<H1><A NAME="see also">SEE ALSO</A></H1>
<P><EM>perl(1)</EM>,
<A HREF="../../../../site/lib/X11/Protocol.html">the X11::Protocol manpage</A>,
<A HREF="../../../../site/lib/X11/Protocol/Connection/Socket.html">the X11::Protocol::Connection::Socket manpage</A>,
<A HREF="../../../../site/lib/X11/Protocol/Connection/FileHandle.html">the X11::Protocol::Connection::FileHandle manpage</A>,
<A HREF="../../../../site/lib/X11/Protocol/Connection/INETSocket.html">the X11::Protocol::Connection::INETSocket manpage</A>,
<A HREF="../../../../site/lib/X11/Protocol/Connection/UNIXSocket.html">the X11::Protocol::Connection::UNIXSocket manpage</A>,
<A HREF="../../../../site/lib/X11/Protocol/Connection/INETFH.html">the X11::Protocol::Connection::INETFH manpage</A>,
<A HREF="../../../../site/lib/X11/Protocol/Connection/UNIXFH.html">the X11::Protocol::Connection::UNIXFH manpage</A>.</P>
<TABLE BORDER=0 CELLPADDING=0 CELLSPACING=0 WIDTH=100%>
<TR><TD CLASS=block VALIGN=MIDDLE WIDTH=100% BGCOLOR="#cccccc">
<STRONG><P CLASS=block> X11::Protocol::Connection - Perl module abstract base class for X11 client to server connections</P></STRONG>
</TD></TR>
</TABLE>
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