Visual Basic 2005 for Programmers: Deitel Developer Series, Second Edition

23.8. Client/Server Tic-Tac-Toe Using a Multithreaded Server

We now present a networked version of the popular game Tic-Tac-Toe, implemented with stream sockets and client/server techniques. The program consists of a FrmTicTac-ToeServer application (Fig. 23.5) and a FrmTicTacToeClient application (Fig. 23.6). The FrmTicTacToeServer allows two FrmTicTacToeClients to connect to the server and play Tic-Tac-Toe against each other. Sample outputs appear in Fig. 23.6. When the server receives a client connection, lines 70–79 of Fig. 23.5 create instances of class Player to process each client in a separate thread of execution. This enables the server to handle requests from both clients. The server assigns value "X" to the first client that connects ...