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SRS is a simple, high-efficiency, real-time media server supporting RTMP, WebRTC, HLS, HTTP-FLV, HTTP-TS, SRT, MPEG-DASH, and GB28181, with codec support for H.264, H.265, AV1, VP9, AAC, Opus, and G.711.
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winlin f42921d7b1 Claude: Add SRT proxy seams and unit tests. 
Mirror the listener and backend dial seams already in place on rtc.go so
the SRT proxy is unit-testable without binding real UDP sockets:
- srsSRTProxyServer.listener: *net.UDPConn -> net.PacketConn, with a
  new listenUDP factory injected via functional option.
- SRTConnection.backendUDP: *net.UDPConn -> io.ReadWriteCloser, with a
  new dialBackendUDP factory; connectBackend uses it instead of
  building a net.UDPAddr and calling net.DialUDP directly.
- handleClientUDP / HandlePacket / handleHandshake take net.Addr
  instead of *net.UDPAddr; writes go through PacketConn.WriteTo.
- Fix a latent SA4001: v.handshake3 = &*handshake3p was no copy at
  all, so the subsequent SynCookie rewrite mutated the just-decoded
  backend packet. Replace with an explicit value copy.

Adds internal/proxy/srt_test.go covering SRTHandshakePacket marshal
roundtrip and stream-id parsing (100%), SRTConnection handshake-0,
handshake-2 full replay, and connectBackend error paths, plus
srsSRTProxyServer constructor/lifecycle and handleClientUDP routing.
Reuses fakeBackendUDP / fakePacketConn / blockingUDPListener from
rtc_test.go for consistency.

Verified with proxy-utest.sh and the full proxy-e2e suite (rtmp,
cluster, redis, transmux, srt, whip).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-16 20:30:22 -04:00
.claude Codex: Rename origin load balancer types. 2026-05-10 20:43:56 -04:00
.codex Codex: Rename origin load balancer types. 2026-05-10 20:43:56 -04:00
.github Enable default configure test. 2025-10-28 10:04:53 -04:00
.kiro Codex: Rename origin load balancer types. 2026-05-10 20:43:56 -04:00
.openclaw Codex: Rename origin load balancer types. 2026-05-10 20:43:56 -04:00
.run Heartbeat: Report ports for proxy server. v5.0.215 v6.0.156 v7.0.15 (#4171) 2024-09-09 10:37:41 +08:00
.vscode Proxy: restructure repo as Go project with proxy as first module (#4652) 2026-03-22 08:11:28 -04:00
cmake OpenClaw: add and refine ST knowledge-base and learning/review skills (#4643) 2026-03-05 09:57:08 -05:00
cmd/proxy Move build output to bin/, replace godotenv with custom .env parser, and update docs. v7.0.143 (#4661) 2026-04-12 14:26:33 -04:00
docs/proxy Codex: Rename origin load balancer types. 2026-05-10 20:43:56 -04:00
internal Claude: Add SRT proxy seams and unit tests. 2026-05-16 20:30:22 -04:00
memory Codex: Rename origin load balancer types. 2026-05-10 20:43:56 -04:00
skills Claude: Split lb interfaces, extract redisclient, drop race-prone globals. 2026-05-16 11:11:18 -04:00
trunk Proxy: Refactor server APIs and expand RTMP test coverage. v7.0.147 (#4672) 2026-05-02 09:36:55 -04:00
.clang-format AI: Add utest to cover process module 2025-10-15 07:52:46 -04:00
.codecov.yml AI: Improve converage for app rtc module. 2025-09-27 09:40:57 -04:00
.gitignore Codex: Remove global proxy load balancer. 2026-05-10 21:00:17 -04:00
CONTRIBUTING.md Update CHANGELOG for #4309. v7.0.31 2025-04-26 06:58:00 -04:00
Dockerfile AI: Add utest to cover listener module. 2025-10-10 09:50:19 -04:00
go.mod Proxy: Harden internal/env tests and add counterfeiter fakes. v7.0.144 (#4665) 2026-04-18 20:33:07 -04:00
go.sum Proxy: Harden internal/env tests and add counterfeiter fakes. v7.0.144 (#4665) 2026-04-18 20:33:07 -04:00
LICENSE update copyright to 2025. v5.0.218 v6.0.159 v7.0.21 (#4271) 2025-01-14 17:35:18 +08:00
Makefile Proxy: Harden internal/env tests and add counterfeiter fakes. v7.0.144 (#4665) 2026-04-18 20:33:07 -04:00
README.md Update README for 6.0 release 0. 2025-12-03 10:41:42 -05:00
SECURITY.md Update SECURITY policy. 2023-01-30 14:20:37 +08:00

README.md

SRS(Simple Realtime Server)

SRS/7.0 (Kai) is a simple, high-efficiency, and real-time video server, supporting RTMP/WebRTC/HLS/HTTP-FLV/SRT/MPEG-DASH/GB28181, Linux/macOS, X86_64/ARMv7/AARCH64/M1/RISCV/LOONGARCH/MIPS, with codec support for H.264, H.265, AV1, VP9, AAC, Opus, and G.711, and essential features.

SRS Overview

Note: For more details on the single-node architecture for SRS, please visit the following link.

SRS is licenced under MIT, and some third-party libraries are distributed under their licenses.

Usage

Please check the Getting Started guide in English or Chinese. We highly recommend using SRS with docker:

docker run --rm -it -p 1935:1935 -p 1985:1985 -p 8080:8080 \
    -p 8000:8000/udp -p 10080:10080/udp ossrs/srs:6

Tips: If you're in China, use this image registry.cn-hangzhou.aliyuncs.com/ossrs/srs:6 for faster speed.

Open http://localhost:8080/ to verify, and then stream using the following FFmpeg command:

ffmpeg -re -i ./doc/source.flv -c copy -f flv -y rtmp://localhost/live/livestream

Alternatively, stream by OBS using the following configuration:

  • Service: Custom
  • Server: rtmp://localhost/live
  • Stream Key: livestream

Play the following streams using media players:

If you'd like to use WebRTC, convert RTMP to WebRTC, or convert WebRTC to RTMP, please check out the wiki documentation in either English or Chinese.

To learn more about RTMP, HLS, HTTP-FLV, SRT, MPEG-DASH, WebRTC protocols, clustering, HTTP API, DVR, and transcoding, please check the documents in English or Chinese.

If you want to use an IDE, VSCode is recommended. VSCode supports macOS, and Linux platforms. The settings are ready. All you need to do is open the folder with VSCode and enjoy the efficiency brought by the IDE. See VSCode README for details.

Sponsor

Would you like additional assistance from us? By becoming a sponsor or backer of SRS, we can provide you with the support you need:

  • Backer: $5 per month, online text chat support through Discord.
  • Sponsor: $100 per month, online text chat plus online meeting support.

Please visit OpenCollective to become a backer or sponsor, and send us a direct message on Discord. We are currently providing support to the developers listed below:

At SRS, our goal is to create a free, open-source community that helps developers all over the world build high-quality streaming and RTC platforms for their businesses.

Contributing

The maintainers, and contributors are listed here. The maintainers who made significant contributions and maintained parts of SRS are listed below, ranked by the number of commits:

  • Winlin: Founder of the project, focusing on ST and Issues/PR. Responsible for architecture and maintenance.
  • XiaoZhihong: Concentrates on WebRTC/QUIC and SRT, with expertise in network QoS. Contributed to ARM on ST and was the original contributor for WebRTC.
  • ChenHaibo: Specializes in GB28181 and HTTP API, contributing to patches for FFmpeg with WHIP.
  • ZhangJunqin: Focused on H.265, Prometheus Exporter, and API module.
  • XiaLixin: Specializes in GB28181, with expertise in live streaming and WebRTC.
  • Jacob Su: Jacob Su has contributed to various modules of SRS.
  • ShiWei: Specializes in SRT and H.265, maintaining SRT and FLV patches for FFmpeg. An expert in codecs and FFmpeg.
  • ChenGuanghua: Focused on WebRTC/QoS and introduced the Asan toolchain to SRS.
  • LiPeng: Concentrates on WebRTC and contributes to memory management and smart pointers.
  • ZhaoWenjie: One of the earliest contributors, focusing on HDS. Has expertise in client technology.
  • WuPengqiang: Focused on H.265, initially contributed to the FFmpeg module in SRS for transcoding AAC with OPUS for WebRTC.

A huge THANK YOU goes out to:

We're really thankful to everyone in the community for helping us find bugs and improve the project. To stay in touch and keep helping our community, please check out this guide.

LICENSE

SRS is licenced under MIT, and some third-party libraries are distributed under their licenses.

Releases

Features

Please read FEATURES.

Changelog

Please read CHANGELOG.

Performance

Please read PERFORMANCE.

Architecture

Please read ARCHITECTURE.

Ports

Please read PORTS.

APIs

Please read APIS.

Mirrors

Please read MIRRORS.

Dockers

Please read DOCKERS.

Beijing, 2013.10
Winlin