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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.
Features
- The encrytion performance in kcptun is as fast as in openssl library(if not faster)
- kcptun has builtin snappy algorithms for compressing streams
- Low-level KCP configuration can be altered by using manual mode
- Increase the number of open files on your server
- You can also increase the per-socket buffer by adding parameters
- For slow processors, increasing buffers is CRITICAL to receive packets properly
Project Samples
