ARQ-UDP

We are implementing ARQ on top of UDP sockets. We have used Stop and Wait algorithm.

To emulate network delay, on linux machine you can use:

sudo tc qdisc add dev lo root netem delay <Delay_in_miliseconds>

assuming lo is your loopback device but you should use ip addr to get yours.

to compile,

gcc sender.c -o sender
gcc receiver.c -o receiver

To run the program,

./sender <SenderPort> <ReceiverPort> <RetransmissionTimer> <NoOfPacketsToBeSent>
./receiver <ReceiverPort> <SenderPort> <PacketDropProbability>

Ex: ./sender 8080 4040 100 4 and ./receiver 8080 4040 0.6

Note that NoOfPacketsToBeSent < 99999 and RetransmissionTimer > 2*Delay_in_miliseconds

After execution, two files containing output, sender.txt and receiver.txt will be produced