So my goal is to have a server that executes some external code/program and while that is happening all normal STDOUT output from that execution would be sent across an existing socket connection to a waiting client. All is working well except that when I'm done, the socket will now hang on syswrite. Printing to the socket still seems to work fine, however (which is how I let the other side know to stop listening for logging output).

It seems that redirecting STDOUT to a socket changes that socket in some way, but I don't know how, or how to change it back.

Some code:

sub start_logging {
   my $socket = shift;

   # send_data uses syswrite()
   send_data($socket, "__LOG_START__");
   
   $Saveout = IO::File->new(">&STDOUT");
   open(*STDOUT, '>&', $socket);
}

sub stop_logging {
   my $socket = shift;

   open (*STDOUT, '>&', $Saveout);
  
   print $socket "__LOG_STOP__\n";

   $send_data($socket, "Random Message"); #Hangs!!
}
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Thoughts?