TCP Implementation over a UDP proxy or emulator which simulates a network mimicking congestion, corruption of bits, delay and packet loss based on percentage specified. (Not included in this repository since it is proprietary)
Command to run UDPL proxy:
It is of the form newudpl -p receive_port:send_port -i input_host_address -o output_host_address -L loss-percentage. 1234 has been hard coded/configured in the TCP client code as the sending port.
./newudpl -p 2222:3333 -i 127.0.0.1:1234 -o 127.0.0.1:4444 -vv -L 50
Order of commands to run:
- UDPL
- TCP server
- TCP client
List of files: 1. tcpserver.py:
Command to run:
It is of the form tcpserver file listening_port address_for_acks port_for_acks where file is the input file from which data is to be read
python tcpserver.py result.txt 4444 127.0.0.1 8888
Description: Contains the implementation of the TCP server
2. tcpclient.py:
Command to run:
It is of the form tcpclient file address_of_udpl port_number_of_udpl windowsize ack_port_number where file is the output file to which serve writes. The window size is measured in bytes.
python tcpclient.py input.txt 127.0.0.1 2222 1563 8888
Description: Contains the implementation of the TCP client
3. tcpheader.py:
Description: Contains the implementation of the 20-byte TCP header, used by the TCP server and client without implementing push (PSH flag), urgent data (URG), reset (RST), or TCP options.