Net::SIP::Dropper(3pm)					User Contributed Perl Documentation				    Net::SIP::Dropper(3pm)

NAME

       Net::SIP::Dropper - drops SIP messages based on callback

SYNOPSIS

	       use Net::SIP::Dropper::ByIPPort;
	       my $drop_by_ipport = Net::SIP::Dropper::ByIPPort->new(
		       database => '/path/to/database.drop',
		       methods => [ 'REGISTER', '...', '' ],
		       attempts => 10,
		       interval => 60,
	       );

	       use Net::SIP::Dropper::ByField;
	       my $drop_by_field = Net::SIP::Dropper::ByField->new(
		       methods => [ 'REGISTER', '...', '' ],
		       'From' => qr/sip(?:vicious|sscuser)/,
		       'User-Agent' => qr/^friendly-scanner$/,
	       );

	       my $drop_subscribe = sub {
		       my ($packet,$leg,$from) = @_;
		       # drop all subscribe requests and responses
		       return $packet->method eq 'SUBSCRIBE' ? 1:0;
	       };

	       my $dropper = Net::SIP::Dropper->new(
		       cbs => [ $drop_by_ipport, $drop_by_field, $drop_subscribe ]);

	       my $chain = Net::SIP::ReceiveChain->new(
		       [ $dropper, ... ]
	       );

DESCRIPTION

       Drops messages. This means, does no further processing in the Net::SIP chain and does not send something back if the incoming message match
       the settings.

       Some useful droppers are defined in Net::SIP::Dropper::ByIpPort and Net::SIP::Dropper::ByField.

CONSTRUCTOR

       new ( ARGS )
	   ARGS is a hash with key "cb" or "cbs". "cb" is a single callback to be processed, "cbs" is an arrayref with callbacks. If one of the
	   callbacks returns true the message will be dropped. If all callbacks return false the message will be forwarded in the chain.

	   Returns a new dropper object to be used in the chain.

perl v5.14.2							    2011-02-03						    Net::SIP::Dropper(3pm)