qiubrian/reliable-udp-sender

How qiubrian/reliable-udp-sender works

This is a Windows command-line UDP file-data transfer sender, not a general networking framework. The user supplies a host and link/window/loss parameters; main validates them, creates a DWORD payload, opens a sender session, sends chunks, closes the session, and compares a local CRC32 with the receiver-reported checksum. SenderSocket owns connection setup, packet transmission, ACK/retransmission handling, worker coordination, optional congestion control, and FIN-based shutdown. The excerpts establish the main calls and several worker/ACK relationships; unsampled method bodies limit finer-grained claims.

Main entry points: main.cpp CLI and validation · SenderSocket.cpp Send workers · CheckSum.cpp CRC32 calculator

Components 12

Command line

CLI and validation CSCE_463_HW_3_P3/main.cpp
DWORD payload CSCE_463_HW_3_P3/main.cpp

Sender protocol

Session setup CSCE_463_HW_3_P3/SenderSocket.cpp
SenderSocket CSCE_463_HW_3_P3/SenderSocket.cpp
Send workers CSCE_463_HW_3_P3/SenderSocket.cpp
ACK and recovery CSCE_463_HW_3_P3/SenderSocket.cpp
Congestion control CSCE_463_HW_3_P3/SenderSocket.cpp
FIN shutdown CSCE_463_HW_3_P3/SenderSocket.cpp

Integrity check

CRC32 calculator CSCE_463_HW_3_P3/CheckSum.cpp

Other components

Operator
UDP receiver
Windows sockets

Connections 17

Operator → CLI and validation: provides arguments CSCE_463_HW_3_P3/main.cpp
CLI and validation → DWORD payload: initializes CSCE_463_HW_3_P3/main.cpp
CLI and validation → Session setup: opens session CSCE_463_HW_3_P3/main.cpp
CLI and validation → SenderSocket: sends chunks CSCE_463_HW_3_P3/main.cpp
CLI and validation → FIN shutdown: closes session CSCE_463_HW_3_P3/main.cpp
CLI and validation → CRC32 calculator: computes CRC32 CSCE_463_HW_3_P3/main.cpp
CLI and validation → SenderSocket: reads receiver checksum CSCE_463_HW_3_P3/main.cpp
SenderSocket → Send workers: dispatches workers CSCE_463_HW_3_P3/SenderSocket.cpp
Send workers → SenderSocket: sends packets CSCE_463_HW_3_P3/SenderSocket.cpp
Send workers → ACK and recovery: receives ACKs CSCE_463_HW_3_P3/SenderSocket.cpp
ACK and recovery → SenderSocket: updates send state CSCE_463_HW_3_P3/SenderSocket.cpp
ACK and recovery → Congestion control: updates window CSCE_463_HW_3_P3/SenderSocket.cpp
ACK and recovery → Send workers: requests retransmit CSCE_463_HW_3_P3/SenderSocket.cpp
Session setup → Windows sockets: resolves UDP host CSCE_463_HW_3_P3/SenderSocket.cpp
Send workers → Windows sockets: sends and receives CSCE_463_HW_3_P3/SenderSocket.cpp
Windows sockets → UDP receiver: exchanges UDP packets
FIN shutdown → UDP receiver: sends FIN CSCE_463_HW_3_P3/SenderSocket.cpp

Drawn by GitDiagram on November 10, 2026 from the repository's file tree, README and source files. Read as Markdown ·