NAME

       Net::SIP::NATHelper::Server - server for Net::SIP::NATHelper::Client

DESCRIPTION

       This module is a wrapper around Net::SIP::NATHelper::Base and will receive it's instructions from
       Net::SIP::NATHelper::Client using RPC via sockets.

CONSTRUCTOR

       new ( [ HELPER ], @FDS )
           Will create an object which listens on all file descriptors given in FDS for RPC from clients.

           If  HELPER  is given and a Net::SIP::NATHelper::Base object or derived it will be used, otherwise the
           helper will be created.

METHODS

       do_command ( FD )
           Called when FD is available for reading.  Calls accept on FD  and  reads  the  RPC  packet  from  the
           resulting file descriptor, executes it and returns result back.

           Currently  implemented  commands  are  "allocate","activate"  and "close" which will map to the local
           methods allocate_sockets, activate_session and close_session.

           One might redefine or add commands by changing "$self->{commands}".  The key of this  hash  reference
           is the command name and the value is the callback.

           Unknown commands will be ignored, e.g nothing returned.

       loop
           This  will loop over all file descriptors it gets from callbacks in Net::SIP::NATHelper::Base and the
           file descriptors for the RPC sockets.

           When file descriptors gets available for reading it will execute the callbacks, e.g. forward the  RTP
           data  or call do_command.  In regular intervals it will call expire from Net::SIP::NATHelper::Base to
           expire the RTP sockets and sessions.

       allocate_sockets ( ... )
           Calls allocate_sockets of the local Net::SIP::NATHelper::Base object.  Takes  and  returns  the  same
           arguments.

       activate_session ( ... )
           Calls  activate_session  of  the local Net::SIP::NATHelper::Base object. Takes the same arguments and
           returns 1 if the session was newly activated, -1 if it was activated before and false  if  activation
           failed.  Updates callbacks into the event loop.

       close_session ( ... )
           Calls  activate_session  of  the local Net::SIP::NATHelper::Base object. Takes the same arguments and
           returns the number of closed sessions.  Updates callbacks into the event loop.

       expire ( ... )
           Calls expire of the local Net::SIP::NATHelper::Base object. Takes the same arguments and returns  the
           number of expired sessions.  Updates callbacks into the event loop if necessary.

BUGS

       The  local  event loop should be pluggable, so that other implementations could be used. Right now it's a
       hard coded loop using select.

perl v5.36.0                                       2023-09-29                   Net::SIP::NATHelper::Server(3pm)