xtaci/kcp-go
Kcp Go
kcp-go is a Go library implementing the KCP protocol for reliable data transmission over UDP. It provides a stream-based transport layer and an automatic repeat request network protocol to ensure ordered delivery while reducing network tail latency.
The project differentiates itself through the use of forward error correction via Reed-Solomon codes to reconstruct lost packets without retransmissions. It also implements secure UDP tunneling by using block ciphers to encrypt both packet headers and payloads.
The library includes capabilities for high-throughput networking through batch system call processing and memory recycling. It further optimizes performance with congestion tuning to prioritize immediate data recovery and a two-stage task scheduling system for parallel CPU distribution.
The implementation includes observability tools for tracking network metrics and tracing protocol events.
Features
- Reliable UDP Layers - Implements a reliable UDP layer using an ARQ protocol to ensure ordered delivery and low latency.
- ARQ Protocols - Implements an ARQ-based protocol to ensure reliable data delivery and fast recovery from packet loss.
- Forward Error Correction - Implements forward error correction using Reed-Solomon codes to reconstruct lost packets without retransmission.
- Low-Latency Data Transmission - Reduces network tail latency by optimizing retransmission timers and bypassing standard congestion control.
- UDP Tunneling - Implements a secure UDP tunnel that encrypts both headers and payloads for anonymity.
- UDP Transport Implementations - Provides a full Go implementation of the KCP protocol for reliable, low-latency UDP transport.
- Packet Encryption - Provides encryption of individual network packets to secure both headers and payloads during transmission.
- Encrypted Tunneling - Provides secure encrypted tunneling for UDP traffic to protect data privacy and anonymity.
- Slab-Based Pre-allocation - Employs slab-based pre-allocation and buffer recycling to minimize garbage collection overhead during packet processing.
- Connection Managers - Includes connection managers that handle thousands of simultaneous network socket connections using a fixed worker pool.
- High-Throughput Network Engineering - Optimizes for high-throughput networking through batch processing and efficient memory management.
- Buffer Recycling - Recycles memory slices for packet operations to reduce the frequency of high-overhead memory allocations.
- Packet Batching Engines - Implements packet batching engines to reduce system call overhead and increase network throughput.
- Nodelay Tuning - Provides congestion tuning to prioritize immediate data recovery and reduce tail latency.
- Network - Increases transmission speeds using immediate acknowledgement triggers and a pacing mechanism to prevent burst congestion.
- Networking Libraries - Fast and reliable ARQ protocol implementation.
- Networking - Reliable ARQ protocol implementation.
- Networking Libraries - Implementation of the KCP reliable ARQ protocol.
- Networking - Reliable-UDP library with FEC.
Star history
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