Various client-server programs made in C as part of CN assignment (Socket Programming).

├── Sequential
│   ├── Client.c
│   ├── Server.c
│   ├── Results.txt
│   ├── Makefile
├── Concurrent
│   ├── Client.c
│   ├── forkServer.c
│   ├── pthreadServer.c
│   ├── selectServer.c
│   ├── pollServer.c
│   ├── ePollServer.c
│   ├── resultsThread.txt
│   ├── resultsFork.txt
│   ├── resultsSelect.txt
│   ├── resultsPoll.txt
│   ├── resultsEPoll.txt
│   ├── Makefile
└── README.md

The sequential client sends 20 sequential requests to the server, each being a number (1-20). The sequential server connects to the clients in queue and handles them one by one. As soon as it connects with one client, it reads the number from the client, calculates its factorial and sends the result back to the client. This goes on until all the clients in the queue are disconnected. The makefile compiles the code and runs the server object first and 10 clients at once (one in each terminal).

To run the code, run:

make sequential

Note: You need to install xterm first.

The concurrent client creates 10 threads where each thread represents an individual client (each one sending 20 requests). Multithreading implemented using pthread. There are 5 types of concurrent servers used: Server using fork, server using pthread, server using select, server using poll and server using epoll. All these servers handle the concurrent client program (essentially multiple clients in concurrency). To run the code, run:

make fork

make thread

make select

make poll

make epoll

Note: You need to install xterm first.