IMHO working with DOS packets is not the easiest way and using an external handler makes you dependent of the user having it installed. Especially the pipe handler is one which is often replaced by other ones which might react different on your packets.
Why don't you just start a thread which does the I/O with standard dos.library functions and uses PutMsg/GetMsg to communicate with the main task. This way you have the total control over what is going on and use standard functions which are available on all Amiga systems.
Bye,
Thomas
