Open Source Go Reliable-UDP Libraries

Hysteria is a high-performance, censorship-resistant proxy and VPN-like networking tool designed to deliver fast, reliable connectivity over unstable or lossy networks by leveraging a custom UDP/QUIC-based transport layer that can masquerade as standard HTTP/3 traffic to evade detection. It supports a wide range of use cases including SOCKS5 and HTTP proxying, TCP/UDP forwarding, Linux TProxy for network redirection, and even tunneling via TUN interfaces, making it a flexible choice for developers and network engineers needing robust remote access or traffic obfuscation. Because it’s implemented in Go and MIT-licensed, the project provides cross-platform builds for major operating systems and architectures, letting users deploy servers and clients for both personal and infrastructural purposes.

kcptun is a stable and secure tunnel based on KCP with N:M multiplexing and FEC. Available for ARM, MIPS, 386 and AMD64. kcptun is shipped with builtin packet encryption powered by various block encryption algorithms and works in Cipher Feedback Mode, for each packet to be sent, the encryption process will start from encrypting a nonce from the system entropy, so encryption to same plaintexts never leads to a same ciphertexts thereafter. kcptun made use of ReedSolomon-Codes to recover lost packets, which requires massive amount of computation, a low-end ARM device cannot satisfy kcptun well. To unleash the full potential of kcptun, a multi-core x86 homeserver CPU like AMD Opteron is recommended. If you insist on running under some ARM routers, you'd better turn off FEC and use salsa20 as the encryption method.

Supported protocol: TCP, UDP, RUDP (Reliable UDP), RICMP (Reliable ICMP), RHTTP (Reliable HTTP), KCP, Quic. Support type: forward proxy, reverse agent, SOCKS5 forward agent, SOCKS5 reverse agent. Agreement and type can be freely combined. External agent agreement and internal forwarding protocols can freely combine. Support Shadowsocks plug-in, spp-shadowsocks-plugin, spp-shadowsocks-plugin-android.