I'm trying to have a program handle multiple sockets in the same process. So for my convenience I use IO::Select, which is a beaut little module that handles sockets for me. I add sockets to be watched with $s->add($socket_handle). Then I wait and call  @ready = $s->can_read(0); which returns only the socket handles that have data waiting (so I don't block on reads - very important when I'm handling multiple sockets).

But of course I want to do different things with the data based on what socket it came from. I can't use a reference as a hash key unless I use Tie::RefHash, which is not a standard module. So far I have managed to only use standard modules, and just to prove a point I would like to continue (and because my program is more portable if I stick to core modules). What's the best way to deal with it. I could create a hash and then check every key value to see if it has been returned, but that's kludgy and I'm not even sure it works:

{  
 1 => $connection_handle_1,
 2 => $connection_handle_2,
 3 => $connection_handle_3

}

[download]

when I would rather have:

{
 $connection_handle_1 => 1,
 $connection_handle_2 => 2,
 $connection_handle_3 => 3,

}

[download]

The other option is to create an object for each socket (or rather, have the object create the socket) and then poll each object like $_->do_connection foreach @object. This doesn't sit very well with me because I'm wasting some of the power of IO::Select, but it's the solution I'm running with right now. Could someone set me straight please?

____________________
Jeremy
I didn't believe in evil until I dated it.

In reply to Non blocking multiple socket handles as hash keys by jepri

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