The chat server/client applications
The intent of this section is to demonstrate how buffers and channels work together in more depth. We will use client and server applications that pass messages back and forth. Specifically, we will create a simple version of a chat server.
We will perform the following actions:
- Create a server and a client that send messages back and forth
- Demonstrate how to handle variable length messages
First, we will demonstrate using a fixed size message using the sendFixedLengthMessage
and receiveFixedLengthMessage
methods. Then we will use the sendMessage
and receiveMessage
methods to handle variable length messages. Fixed length messages are easier to handle but will not work if the length of a message exceeds the size of the buffer. Variable length messages require more careful handling than what we have seen in previous examples. These methods have been placed in a class called HelperMethods
to enable their use in multiple applications.
The chat server
Let's...