| Subject: | Module needs to override fhopen() |
As Net::Telnet::Cisco is a derived class of Net::Telnet then all
Net::Telnet methods may be called upon Net::Telnet::Cisco instances.
The Net::Telnet::fhopen() method breaks when called upon a
Net::Telnet::Cisco object, so it needs to be overridden to work properly.
The problem is that fhopen() "backs up" its object data before pivoting
its GLOB onto the new filehandle, then restores the data. It only backs
up the Net::Telnet object data so in this process the Net::Telnet::Cisco
object data (i.e. *$self->{net_telnet_cisco}) is lost!
The override is quite simple, and can be worked out by inspection of the
Net::Telnet::fhopen() code for the backup and restore procedure, which
can be called around $self->SUPER::fhopen().
There should also be a test for use of fhopen() in the
Net::Telnet::Cisco package.
This problem is not something that Net::Telnet can fix because it
doesn't know who its derived classes are or how they store object data,
e.g. *$self->{net_telnet_foo}.