Example of communication between multiple clients provided by one server in C.

This project represents a simple example of how to use the select method in C and in linux to performe a communication between multiple clients instances provided by one server.

First thing first, I used the port 8084 you can change this port and use any free port on your local machine in the Server.c:

srvAddr.sin_port = htons(8084);

and in the Client.c:

adrsrv.sin_port = htons(8084);

also you can change the ip address of the server:

inet_aton("127.0.0.1", &(adrsrv.sin_addr));

The server assert that the username provided is unique, and then register it. It can register up to 20 client. This is something provided in this implementation you can change the number of users to add. You can change this in the Server.c:

char *pseudonames[20];

To use this code on your linux machine you need just to run the Server.c first and then run as much as you need of instaces of the Client.c. Then each client can decide his or her name and communicate with the others.

You can find in the Assets directorie some pictures that will show you an example of execution of the code.

1. run the server:

2. run the first client:

3. run the second client:

4. run the third client: