how to write bytes to server socket

Question

I\'m writing a java socket program to read data from server, I\'ve no control to server, below is protocol agreed,

• 2-bytes: magic number
• 2-bytes: data l

Answer 1

Use a DataOutputStream around a BufferedOutputStream around the `Socket.getOutputStream(). Then you can use:

• writeShort() for the magic number
• writeShort() for the length word
• write() for the payload.

Similarly you can use DataInputStream and the corresponding readXXX() methods to read the response.

NB You are writing to a socket here, not a server socket.