How to connect j2me game to another j2me game via gprs

Question

i create a simple game like tic tac toe, but i still confuse how can i play with my friend via gprs. need help in server configuration, and what connection should i use http connection or socket connection. if anyone know the script for my j2me and server please tell me.

Answer 1

If you're using MIDP 1, which is what you need if you plan on deploying the game on an available phone, then the only protocol that you can count on being supported is Http. So if you're looking for portability across a large number of devices then that's what you should use (HttpConnection specifically). Also, since there is no push architecture in MIDP 1, you'll need to use the technique called "polling", which means you're clients are going to have to send requests to the server every few seconds to check for updates in the game.
I actually did a little 2 player tic tac toe to teach myself MIDP, and the code is available at planet source code:
http://www.planetsourcecode.com/vb/scripts/ShowCode.asp?txtCodeId=3398&lngWId=2
(If the link doesn't work just make a search for MIDP under the Java section).
You have to add a line to the JAD file that has the URL of the servlet, or you can replace:
String url = getAppProperty("TicTacToe.URL");in sendMessage() with a hard-coded string.
The servlet is very very crude, since I have little experience using Java on the server side and I was more interested in doing the client, and it just links the first two available players and automatically starts a game. But I think it might serve as good starting point for you. And of course, if you are more comfortable with other server-side technologies then you should use them instead of a servlet.