A userspace TCP/IP stack written from scratch in C++17: Ethernet, ARP, IPv4, ICMP, UDP and TCP (Reno congestion control, RFC 6298 adaptive RTO, out-of-order reassembly) running over a TAP device or a raw NIC, with no kernel sockets in the data path.
linux networking tcp cpp cpp17 epoll raw-sockets from-scratch systems-programming congestion-control userspace-networking network-stack af-packet tcp-ip-stack tun-tap
-
Updated
Aug 5, 2026 - C++