Hi! I've been looking for UDP exampels as well, and i finally found it here! Thanks! But i'm having some problems with your send/receive script:( In my case i'm trying to query a game server (TF2). It runs on port 27015, so i changed PeerPort to 27015 and PeerAddr to my server ip. To get A2S_INFO (number of players, map, server name etc) i have to send a request UDP packet with the following info: FF FF FF FF 54 53 6F 75 72 63 65 20 45 6E 67 69 6E 65 20 51 75 65 72 79 00 Source Engine Query . When the server gets this packet is should respond by sending this server info back. However, when i run the script nothing happens. It doesn't print anything:( I'm not sure about the LocalPort.. Nevertheless, i've been stuck with this for a long time now, and no one can help me out. Therefore i seek the wisdom of the monks. Thanks in advance! Url to the query protocol for those who are interested: http://developer.valvesoftware.com/wiki/Server_Queries