TCP_simulation

Computer Network Project about TCP simulation by UDP socket programming.

Environment

Ubuntu 18.04

Usage

Compile and Clean

make all
make clean

Server process

./server
# or 
./server "your own ip address"
# i.g. ./server 140.117.178.203

Client process

./client "server ip" 21234 "client port" "video#1-4"
# i.g. ./client 127.0.0.1 21234 12345 1 3 4

Steps

step1

Create a server and a client. The server and client can both transmit packets and ACKs. The server must be able to handle multiple file requests from the client. The client would randomly request one to four video files at one time.

step2

The client process are increased to four clients at one time.

step3

Channels may have losses. The packet loss error rate is set to have a Poisson distribution with a mean of 10 for simulating the packet loss.

step4

Delayed ACKs are added to senders and receivers.

step5

The basic TCP congestion control. Implement the slow start mechanism and the congestion avoidance mechanism.

step6

The Tahoe TCP congestion control. Implement the fast retransmit machanism.

step7

The Reno TCP congestion control. Implement the Reno TCP with 3 duplicate ACKs.

step8

The SACK option is incorporated into the standard.

step9

Increase the number of clients to 30.

License

MIT