1.Server supports multi-client access the use of a TCP connection between 2.C and S direct communication between 3.C and C (not passing through S). Direct communication between 4.C and C using either TCP, you can also use UDP. You can use the Socket, you can also use TcpClient/UdpClient the like

weChat\.classpath
......\.project
......\.settings\org.eclipse.jdt.core.prefs
......\bin\com\wtt\Client$1.class
......\...\...\...\Client$2.class
......\...\...\...\Client$3.class
......\...\...\...\Client$4.class
......\...\...\...\Client$5.class
......\...\...\...\Client$6.class
......\...\...\...\Client$7.class
......\...\...\...\Client$MessageThread.class
......\...\...\...\Client$udpClientThread.class
......\...\...\...\Client$udpServerThread.class
......\...\...\...\Client.class
......\...\...\...\Server$1.class
......\...\...\...\Server$2.class
......\...\...\...\Server$3.class
......\...\...\...\Server$4.class
......\...\...\...\Server$5.class
......\...\...\...\Server$6.class
......\...\...\...\Server$7.class
......\...\...\...\Server$ClientThread.class
......\...\...\...\Server$ServerThread.class
......\...\...\...\Server.class
......\...\...\...\User.class
......\src\com\wtt\Client.java
......\...\...\...\Server.java
......\...\...\...\User.java
......\bin\com\wtt
......\src\com\wtt
......\bin\com
......\src\com
......\.settings
......\bin
......\src
weChat

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