I have the following piece of code doing select(). 
my $extsock = socket connected to some server...
my @ready;
while(@ready = $select->can_read) {
  my $socket;
  for $socket (@ready) {
    if($socket == $listen) {
      my $new_socket = $listen->accept;
      Server->new($new_socket, $select, \@clients);
    } else {
      my $client = $clients[$socket->fileno];
      if(defined $client) {
        &{$client->nextsub}();
      } else {
        # unknown data???
      }
    }
  }
}

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I am writing a server that listens on a socket and also connects to another server and sends/receives data on that socket. I want to be able to do this select() loop and have it handle both sockets, the server and the client. I connect $extsock to a client during a server request, so after I create a new Server object, that is when I connect to another server, and add that socket to select by doing: 
$main::extsock = new IO::Handle;
$main::extsock = IO::Socket::INET->new(.......);
$self->select->add($main::extsock);

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How do I figure out if the "unknown data" is coming from $extsock? Since right now, when data comes in on the client socket, $client is not defined!?

Thanks a lot,
Amir

In reply to select() on a client and server socket by amir

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