Reliable transport over UDP in Java: sliding window, congestion control, benchmarks, end-to-end SHA-256 integrity.

FRUL: A reliable transport protocol implemented in userspace C, featuring TCP-like connection state machine, sliding window flow control, selective acknowledgment, and timestamps. Runs over UDP.

Custom reliable UDP protocol with sliding window, three-way handshake, flow control, and packet loss handling in C

Secure TCP over UDP Protocol (Python): Reliable, TLS inspired transport layer over UDP using AES-GCM & X25519.

Reliable Transport Protocol over UDP with TCP Reno & CUBIC Congestion Control (Python, Mininet)