T. H. MOK, question about your p2p chat program

Question

Mok, I have had some issues while running your program.... First, I was able to "test" the program with 2 instances on the same machine with one problem: the client's message would display 3 times for every message sent. why? Secondly, I have been unable to run the program on two separate machines. Upon trying to connect, I get a "Remote Close" message. Listening is set up properly on both machines as well as Connecting. PLEASE HELP ASAP!!!! Thank you in advance!