Java™ Network Programming and Distributed Computing

6.5. Creating a TCP Client

Having discussed the functionality of the Socket class, we will now examine a complete TCP client. The client we'll look at here is a daytime client, which, as its name suggests, connects to a daytime server to read the current day and time. Establishing a socket connection and reading from it is a fairly simple process, requiring very little code. By default, the daytime service runs on port 13. Not every machine has a daytime server running, but a Unix server would be a good system to run the client against. If you do not have access to a Unix server, code for a TCP daytime server is given in Section 6.7—the client can be run against it.

Code for DaytimeClient

 import java.net.* import java.io.*; // Chapter 6, Listing ...