Twitter-like client-server

This is a twitter-like client-server project. There are two applications in this repository (client and server).

The communication between client and server is done through a protocol defined by ourselves above TCP sockets. This was developed as the final project of the Operating Systems 2 class at UFRGS and uses many concepts of distributed systems and parallel programming.

Client - General architecture

• Main thread: starts "To server" and "From server" threads and waits until they exit.
• "To server" thread: read from the input and send messages to the server, until EOF or the connection gets closed.
• "From server" thread: read from connection and print to output until the connection gets closed.
• SIGINT listener: triggered when the user types Ctrl+c. Close TCP connection.

Server - General architecture

It's a TCP server that listens on the main thread. Whenever a client gets connected, a new thread is created to handle this communication. Because of multithreading, many concepts of parallel programming were used, such as critical sessions, mutexes, semaphores, etc.

How to build and run

1. Build:

make

2. Start server:

./server/server 

3. Start client:

./client/client @profile 127.0.0.1 4242