i cant really help with the socket issue (or whether sockets are suitable for your case), but you might next time want to include a
link to the protocol specification. it might help those who are trying to assist you.
Update: I think Fletch hit it on the head, it doesnt seem to end its messages with newlines, but rather with null characters (\0).
Update 2: Also, my (limited) experience with game servers makes me curious...are you sure you have the right port? The game port (where you connect to play) is often different from the query port (where you connect to get server info).
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Systems development is like banging your head against a wall...
It's usually very painful, but if you're persistent, you'll get through it.