搭配另一個 Server 程式, 可以用來測試網路通訊是否正常! 執行順序是 server先 run, 再 run 本程式! 這兩支程式, 必須在同一台電腦上執行!-Server with other programs, can be used to test whether the normal network communications! Server implementation of the order is first run, and then run the program! These two programs, must be on the same computer implementation!