Issue on ServerSocket

[Larry Peng]

Hi,
I am newer of blackberry and I am trying to run up a server socket port on simulator 8210 and trying to connect it from a Java application side with new socket("IP",1234), on Java application side, I can get the remote Server Ip address and port number, but stop on read from inputstream, on Simulator(Server) side, there is no any response at all, code is: ServerSocketConnection scn = (ServerSocketConnection) Connector.open("socket://:1234;deviceside=true); scs = (SocketConnection) scn.acceptAndOpen(); it stop on scn.acceptAndOpen(); wont go further step. Also I tried to add APN with Connector.open like this ServerSocketConnection scn = (ServerSocketConnection) Connector.open("socket://:1234;deviceside=true;apn=blackberry.net"); it does not help either.
Can anybody help me this? what is wrong with it? do I need to set any others? I appreciate very much.