Client, use the Socket on e server on the network a port for a connection request, once the connection is successful, open the session session is complete, close the Socket. Clients do not need to specify the port to open, usually temporary, dynamically allocate a port above 1024. Server, use ServerSocket listen on the specified port, the port can specify (usually because ports below 1024 are reserved ports, in some operating systems can not be free to use, it is recommended to use a port greater than 1024), waiting for client connection request, the client connection, the session produced in the session is finished, close the connection.

Client.java
Server.java
client1.java
Server1.java

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