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|
use strict;
use warnings;
package IO::Socket::Telnet::HalfDuplex;
use base 'IO::Socket::Telnet';
=head1 NAME
=head1 SYNOPSIS
=head1 DESCRIPTION
=cut
=head1 CONSTRUCTOR
=head2 new(PARAMHASH)
=cut
sub new {
my $class = shift;
my %args = @_;
my $ping = delete $args{ping_option} || 99;
my $self = $class->SUPER::new(@_);
${*{$self}}{ping_option} = $ping;
$self->IO::Socket::Telnet::telnet_simple_callback(\&_telnet_negotiation);
return $self;
}
sub telnet_simple_callback {
my $self = shift;
${*$self}{halfduplex_simple_cb} = $_[0] if @_;
${*$self}{halfduplex_simple_cb};
}
=head1 METHODS
=cut
=head2 read()
=cut
sub read {
my $self = shift;
my $buffer;
$self->do(chr(${*{$self}}{ping_option}));
${*{$self}}{got_pong} = 0;
eval {
local $SIG{__DIE__};
while (1) {
my $b;
defined $self->recv($b, 4096, 0) and do {
$buffer .= $b;
die "got pong\n" if ${*{$self}}{got_pong};
next;
};
die "Disconnected from server: $!" unless $!{EINTR};
}
};
die $@ if $@ !~ /^got pong\n/;
return $buffer;
}
sub _telnet_negotiation {
my $self = shift;
my $option = shift;
my $external_callback = ${*{$self}}{halfduplex_simple_cb};
my $ping = ${*{$self}}{ping_option};
if ($option =~ / $ping$/) {
${*{$self}}{got_pong} = 1;
return '' unless $external_callback;
return $self->$external_callback($option);
}
return unless $external_callback;
return $self->$external_callback($option);
}
=head1 BUGS
No known bugs.
Please report any bugs through RT: email
C<bug-io-socket-telnet-halfduplex at rt.cpan.org>, or browse to
L<http://rt.cpan.org/NoAuth/ReportBug.html?Queue=IO-Socket-Telnet-HalfDuplex>.
=head1 TODO
=head1 SEE ALSO
=head1 SUPPORT
You can find this documentation for this module with the perldoc command.
perldoc IO::Socket::Telnet::HalfDuplex
You can also look for information at:
=over 4
=item * AnnoCPAN: Annotated CPAN documentation
L<http://annocpan.org/dist/IO-Socket-Telnet-HalfDuplex>
=item * CPAN Ratings
L<http://cpanratings.perl.org/d/IO-Socket-Telnet-HalfDuplex>
=item * RT: CPAN's request tracker
L<http://rt.cpan.org/NoAuth/Bugs.html?Dist=IO-Socket-Telnet-HalfDuplex>
=item * Search CPAN
L<http://search.cpan.org/dist/IO-Socket-Telnet-HalfDuplex>
=back
=head1 AUTHOR
Jesse Luehrs <doy at tozt dot net>
=head1 COPYRIGHT AND LICENSE
This software is copyright (c) 2009 by Jesse Luehrs.
This is free software; you can redistribute it and/or modify it under
the same terms as perl itself.
=cut
1;
|
