HTTP::Proxy::Engine(3)User Contributed Perl DocumentatioHTTP::Proxy::Engine(3)NAMEHTTP::Proxy::Engine - Generic child process manager engine for
HTTP::Proxy
SYNOPSIS
use HTTP::Proxy;
# use the default engine for your system
my $proxy = HTTP::Proxy->new();
# choose one
my $proxy = HTTP::Proxy->new( engine => 'Old' );
DESCRIPTION
The HTTP::Proxy::Engine class is a front-end to actual proxy engine
classes.
The role of an engine is to implement the main fork+serve loop with all
the required bookkeeping. This is also a good way to test various
implementation and/or try out new algorithms without too much
difficulties.
METHODSnew()
Create a new engine. The parameter "engine" is used to decide which
kind of engine will be created. Other parameters are passed to the
underlying engine.
This method also implement the subclasses constructor (they
obviously do not need the "engine" parameter).
CREATING YOUR OWN ENGINE
It is possible to create one's own engine, by creating a simple
subclass of HTTP::Proxy::Engine with the following methods:
start()
This method should handle any initialisation required when the
engine starts.
run()
This method is the main loop of the master process. It defines how
child processes are forked, checked and killed.
The engine MUST have a run() method, and it will be called again
and again until the proxy exits.
$self->proxy->daemon returns the listening socket that can accept()
connections. The child must call $self->proxy->serve_connections()
on the returned socket to handle actual TCP connections.
stop()
This optional method should handle any cleanup procedures when the
engine stops (typically when the main proxy process is killed).
A subclass may also define a %defaults hash (with "our") that contains
the default values for the fields used internaly.
METHODS PROVIDED TO SUBCLASSESHTTP::Proxy::Engine provides the following methods to its subclasses:
proxy()
Return the HTTP::Proxy object that runs the engine.
max_clients()
Get or set the maximum number of TCP clients, that is to say the
maximum number of forked child process.
Some engines may understand a value of 0 as do not fork at all.
This is what HTTP::Proxy::Engine::Legacy does.
make_accessors( @names )
Create accessors named after @names in the subclass package. All
accessors are read/write. This is a utility method.
This is a class method.
AUTHOR
Philippe "BooK" Bruhat, "<book@cpan.org>".
COPYRIGHT
Copyright 2005, Philippe Bruhat.
LICENSE
This module is free software; you can redistribute it or modify it
under the same terms as Perl itself.
perl v5.14.1 2011-07-20 HTTP::Proxy::Engine(3)
