https://github.com/l42111996/java-kcp

基于java的netty实现的可靠udp网络库(kcp算法)，包含fec实现，可用于游戏，视频，加速等业务
https://github.com/l42111996/java-kcp

arq fec java kcp moba netty reedsolomon reliable-udp udp

Last synced: 4 days ago
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基于java的netty实现的可靠udp网络库(kcp算法)，包含fec实现，可用于游戏，视频，加速等业务

• Host: GitHub
• URL: https://github.com/l42111996/java-kcp
• Owner: l42111996
• License: apache-2.0
• Created: 2018-09-26T06:53:57.000Z (about 6 years ago)
• Default Branch: master
• Last Pushed: 2024-05-07T11:59:13.000Z (8 months ago)
• Last Synced: 2024-12-18T00:06:03.259Z (4 days ago)
• Topics: arq, fec, java, kcp, moba, netty, reedsolomon, reliable-udp, udp
• Language: Java
• Homepage:
• Size: 452 KB
• Stars: 474
• Watchers: 15
• Forks: 144
• Open Issues: 6
• Metadata Files:
  • Readme: README.en.md
  • License: LICENSE

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README

        
# java-Kcp

[![Powered][2]][1]

[1]: https://github.com/skywind3000/kcp

[2]: http://skywind3000.github.io/word/images/kcp.svg

Kcp based on netty version (including implementation of fec function)

KCP is a udp-based fast and reliable protocol (rudp), which can reduce the average delay by 30% -40% at the cost of wasting 10% -20% of bandwidth over TCP, and reduce the maximum delay by three times the transmission effect.

# maven repository:

```xml

  com.github.l42111996

  kcp-base

  1.6

```

# Using method and parameters

1. [Server-side example](https://github.com/l42111996/java-Kcp/blob/master/kcp-example/src/main/java/test/KcpRttExampleServer.java)

2. [Client Example](https://github.com/l42111996/java-Kcp/blob/master/kcp-example/src/main/java/test/KcpRttExampleClient.java)

3. [Best Practices](https://github.com/skywind3000/kcp/wiki/KCP-Best-Practice)

4. [A lot of information](https://github.com/skywind3000/kcp)

5. Compatible with C #, [java server](https://github.com/l42111996/java-Kcp/blob/master/kcp-example/src/main/java/test/Kcp4sharpExampleServer.java), [c #Client](https://github.com/l42111996/csharp-kcp/blob/master/example-Kcp/KcpRttExampleClient.cs)

6. [Encountered problems](https://github.com/l42111996/java-Kcp/blob/master/QA.md)

7. [Performance test results](https://github.com/l42111996/java-Kcp/blob/master/Benchmark.md)

8. [Compatible with kcp-go, including fec compatible](https://github.com/l42111996/java-Kcp/blob/master/kcp-example/src/main/java/test/Kcp4GoExampleClient.java)

# compatibility:

1. Compatible with c version of kcp

2. fec implementation based on https://github.com/Backblaze/JavaReedSolomon

3. Perfectly compatible C# version, https://github.com/l42111996/csharp-kcp, quickly build the network library before the game

# optimization:

1. Based on event-driven, make full use of multi-core

2. Optimize fastack logic and reduce traffic by 10%

3. Optimize the check function.

4. Optimize collection iterators.

5. Include fec to reduce latency

6. With crc32 check

7. Use the time wheel to optimize the CPU usage of a large number of connections

8. Use directbuf and object pool, no gc pressure

9. Increase the use of conv or ip + port to determine the uniqueness of the channel. The game is recommended to use conv and tcp configuration. [Related information](https://github.com/skywind3000/kcp/wiki/Cooperate-With-Tcp-Server)

10. Changes in export ip such as 4G switching wifi when adding games will not cause disconnection

# Relevant information

1. https://github.com/skywind3000/kcp The original ccp version of kcp

2. https://github.com/xtaci/kcp-go go version kcp, with a lot of optimization

3. https://github.com/Backblaze/JavaReedSolomon java version fec

4. https://github.com/LMAX-Exchange/disruptor High-performance inter-thread messaging library

5. https://github.com/JCTools/JCTools efficient concurrent library

6. https://github.com/szhnet/kcp-netty A kcp for java version

7. https://github.com/l42111996/csharp-kcp C# version of kcp based on dotNetty, perfectly compatible

# communicate with

QQ: 526167774