Net::SSH::Perl::SubsysUser:Contributed PerNet::SSH::Perl::Subsystem::Client(3)NAMENet::SSH::Perl::Subsystem::Client - Subsystem client base class
SYNOPSIS
package My::Subsystem;
use Net::SSH::Perl::Subsystem::Client;
@ISA = qw( Net::SSH::Perl::Subsystem::Client );
use constant MSG_HELLO => 1;
sub init {
my $system = shift;
$system->SUPER::init(@_);
my $msg = $system->new_msg(MSG_HELLO);
$msg->put_str("Hello, subsystem server.");
$msg->send;
}
sub subsystem { "mysubsystem" }
DESCRIPTIONNet::SSH::Perl::Subsystem::Client simplifies the process of writing a
client for an SSH-2 subsystem. A subsystem is generally a networking
protocol that is built on top of an SSH channel--the channel provides
transport, connection, encryption, authentication, message integrity,
etc. The subsystem client and server communicate over this encrypted,
secure channel (a channel built over an insecure network). SSH provides
the encrypted transport, and the subsystem is then free to act like a
standard networking protocol.
Subsystem::Client is built on top of Net::SSH::Perl, which provides the
client end of the services described above (encryption, message
integrity checking, authentication, etc.). It is designed to be used
with a subsystem server, working with respect to an agreed-upon
networking protocol.
SFTP is an example of a subsystem: the underlying transport is set up
by Net::SSH::Perl, and on top of that layer, files can be transferred
and filesystems managed without knowledge of the secure tunnel.
USAGENet::SSH::Perl::Subsystem::Client is intended to be used as a base
class for your protocol-specific client. It handles all interaction
with Net::SSH::Perl so that your focus can be on sending commands to
the subsystem server, etc.
Your subclass will probably be most interested in using and/or
overriding the following methods:
$sc->init(%args)
Initializes a new Subsystem::Client object: builds the SSH tunnel using
Net::SSH::Perl, then opens up a channel along which the subsystem
traffic will be sent. It then opens a connection to the subsystem
server.
You can override this method to provide any additional functionality
that your client might need; for example, you might wish to use it to
send an 'init' message to the subsystem server.
perl v5.14.12001-07-Net::SSH::Perl::Subsystem::Client(3)
