UDP Reliable File Transfer

The program is a implementation of effective UDP Reliable File Transfer.

Tech

• Custom protocol with Packet Type and Timestamp
• Using socket timeout to detect and implement the re-transmission mechanism

Specification

• Packet Type
  • ACK (Acknowledgement)
  • NACK (Negative Acknowledgement)
  • RTS (Request To Send)
  • SYN (Synchronize)
  • RNACK (Request a feedback of non-arrival packets)
  • RST (Reset)
  • FIN (Finished a file transfer)
  • DATA

Usage

make
./sender <receiver IP> <receiver port> <file name>
./receiver <port>