GoBackN-Protocol

Go-Back-N is a specific instance of the automated repeat request (ARQ) and a special case of the general sliding window protocol.

How this works?

The network topology used for this projects is as follows:

Sender A, reads content from test/francais.txt and sends them to the router R in chunks of size 1500 bytes (specified in defs.hpp). Router R, either buffers or drops the received chunk. After some simulated processing time, it forwards them to B. Upon receival (:-?), receiver B sends an acknowledgment (ACK) for each packet received. Sender A, detects if a packet is dropped by the router using some mechanism, and re-transmits as specified in the Go-Back-N protocol.

How to run?

Make sure you are in the main directory of the repository.

Sender

$ make run_sender

Router

$ make run_router

Receiver

$ make run_receiver

In order to start the sending process, you have to enter an arbitrary string in the sender's terminal.

A report in full details can be found in doc/.