Protocol::Connection

Section: User Contributed Perl Documentation (3pm)
Updated: 2003-01-27
Index Return to Main Contents
 

NAME

X11::Protocol::Connection - Perl module abstract base class for X11 client to server connections  

SYNOPSIS

  # 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 { ... }
  ...

  # In program
  $connection = X11::Protocol::Connection::CarrierPigeon
    ->open($host, $display_number);
  $x = X11::Protocol->new($connection);

  $connection->give($data);

  $reply = unpack("I", $connection->get(4));

  use IO::Select;
  $sel = IO::select->new($connection->fh);
  if ($sel->can_read == $connection->fh) ...

 

DESCRIPTION

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:  

open

  $conn = X11::Protocol::Connection::Foo->open($host, $display_num)

Open a connection to the specified display (numbered from 0) on the specified $host.  

give

  $conn->give($data)

Send the given data to the server. Normally, this method is used only by the protocol module itself.  

get

  $data = $conn->get($n)

Read $n bytes of data from the server. Normally, this method is used only by the protocol module itself.  

fh

  $filehandle = $conn->fh

Return an object suitable for use as a filehandle. This is mainly useful for doing select() and other such system calls.  

AUTHOR

Stephen McCamant <SMCCAM@cpan.org>.  

SEE ALSO

perl(1), X11::Protocol, X11::Protocol::Connection::Socket, X11::Protocol::Connection::FileHandle, X11::Protocol::Connection::INETSocket, X11::Protocol::Connection::UNIXSocket, X11::Protocol::Connection::INETFH, X11::Protocol::Connection::UNIXFH.


 

Index

NAME
SYNOPSIS
DESCRIPTION
open
give
get
fh
AUTHOR
SEE ALSO