TCP

Implementation of the TCP protocol to send files between client - server. This project was a part of the Computer Networks class in my junior year. The code runs on top of the unreliable UDP network. Incorporates the following features of the TCP protocol

Reliability (with appropriate re-transmissions) - implements the variant of Go-Back-N protocol

Data Integrity (with checksums)

Connection Management

Optimizations like fast retransmit etc

Implements sliding window algoirhtm to prevent buffer overflows

To execute the code, run the Makefile first to compile the Sender and Receiver files. Then, the commnad line arguments for the client side is java TCPend -p [port] -s [remote-IP] -a [remote-port] –f [file name] -m [mtu] -c [sws]. Where

port: Port number at which the client will run

remote-IP : IP address of the remote process (Receiver)

remote-port: port at which the remote process/ transmission is running

file name: name of the file to be transferred

mtu : Maximum transmission unit

sws: Sliding window size

Similarly, for the Sender side, command line arguments are java TCPend -p [port] -m [mtu] -c [sws]