This document discusses code for sockets in Java that allows communication between a client and server. The code shows how to create a server socket that listens on a specific port for connections and how to accept incoming connections. It also demonstrates how to send and receive messages between the client and server by creating input and output streams. The client code connects to the server, sends a message, and then closes the connection, while the server receives messages and prints them out. The key aspects are creating sockets to establish connections, using input/output streams to send and receive data, and closing connections once a message has been exchanged.

1. Sockets Codec in java is example

2. The sockets are programs that facilitate to us and realize the connection between users of algun program d chat or algun computing porel which realizen the transmission of information.

3. This one is a program on sockets that was helping us to demonstrate the managing message between a servant and a client and pieces of code appear, this code is a part of a project of a young person of a web page.

4. This is code the servidor.

5. sc = new ServerSocket(PUERTO );/* crea socket servidor que escuchara en puerto 5000*/

6. so=new Socket();

7. System.out.println("Esperando una conexión:");

8. so = sc.accept();

9. //Inicia el socket, ahora esta esperando una conexión por parte del cliente

10. System.out.println("Un cliente se ha conectado.");

11. //Canales de entrada y salida de datos

12. entrada = new BufferedReader(new InputStreamReader(so.getInputStream()));

13. salida = new DataOutputStream(so.getOutputStream());

14. System.out.println("Confirmando conexion al cliente....");

15. salida.writeUTF("Conexión exitosa...\n envia un mensaje :D");

16. //Recepcion de mensaje

17. mensajeRecibido = entrada.readLine();

18. System.out.println(mensajeRecibido);

19. These two functions take charge realizing so much the exit of the information likewise as the connection of the chain of information to sending the client.

20. entrada = new BufferedReader(new InputStreamReader(so.getInputStream()));

21. salida = new DataOutputStream(so.getOutputStream());

22. This is code the client

23. sc = new Socket( HOST , PUERTO ); /*conectar a un servidor en localhost con puerto 5000*/

24. //creamos el flujo de datos por el que se enviara un mensaje

25. mensaje = new DataOutputStream(sc.getOutputStream());

26. //enviamos el mensaje

27. mensaje.writeUTF("hola que tal!!");

28. //cerramos la conexión

29. sc.close();

30. }catch(Exception e )

31. {

32. System.out.println("Error: "+e.getMessage());

33. This function does the same thing that the previous one only that now the connection is with the servant, but the function close () takes charge closing the route atraves of which the message is transmitted.

34. mensaje = new DataOutputStream(sc.getOutputStream());

35. sc.close();

36. Here what is important to stand out is that the program does connection or rather the connection simulates between a client and a servant atraves of a definite port, if we quisieramos to do a connection between computers is realized across the protocols of IP address and realizing connections across an area of local network.