📜 Add implementation list

2022-4-shadowsocks-implementations.md

@@ -0,0 +1,52 @@
+# Shadowsocks 2022 Implementations
+
+This document tracks and compares implementations of Shadowsocks 2022 by feature and spec compliance, and showcases some benchmark and speedtest results.
+
+## 1. Implementations
+
+Reference implementations of Shadowsocks 2022 are fully spec-compliant, performance-optimized, and ready for production.
+
+|     | shadowsocks-rust | sing-shadowsocks |
+| --- | ---------------: | ---------------: |
+| Description | CLIs and libraries written in Rust. | CLIs and libraries written in Go. |
+| URL | https://github.com/shadowsocks/shadowsocks-rust | https://github.com/SagerNet/sing-shadowsocks, https://github.com/SagerNet/sing-tools |
+| Server | ✅ | ✅ |
+| Relay  | ❌ | ✅ |
+| Client | ✅ | ✅ |
+| [EIH (Extensible Identity Headers)](2022-2-shadowsocks-2022-extensible-identity-headers.md) | ❌ | ✅ |
+
+## 2. Benchmarks
+
+### 2.1. Header Benchmarks
+
+https://github.com/database64128/cubic-go-playground/blob/main/shadowsocks/udpheader/udpheader_test.go
+
+```
+BenchmarkGenSaltHkdfSha1-8          	  372712	      3283 ns/op	    1264 B/op	      18 allocs/op
+BenchmarkGenSaltBlake3-8            	  770426	      1554 ns/op	       0 B/op	       0 allocs/op
+BenchmarkAesEcbHeaderEncryption-8   	99224395	        12.84 ns/op	       0 B/op	       0 allocs/op
+BenchmarkAesEcbHeaderDecryption-8   	100000000	        11.79 ns/op	       0 B/op	       0 allocs/op
+```
+
+### 2.2. Full UDP Packet Construction Benchmarks
+
+https://github.com/database64128/cubic-go-playground/blob/main/shadowsocks/udp_test.go
+
+```
+BenchmarkShadowsocksAEADAes256GcmEncryption-8             	  252819	      4520 ns/op	    2160 B/op	      23 allocs/op
+BenchmarkShadowsocksAEADAes256GcmWithBlake3Encryption-8   	  320718	      3367 ns/op	     896 B/op	       5 allocs/op
+BenchmarkDraftSeparateHeaderAes256GcmEncryption-8         	 2059383	       590.5 ns/op	       0 B/op	       0 allocs/op
+BenchmarkDraftXChaCha20Poly1305Encryption-8               	  993336	      1266 ns/op	       0 B/op	       0 allocs/op
+```
+
+### 2.3. shadowsocks-rust Speed Tests
+
+|       shadowsocks-rust        |   TCP    |   UDP    |
+| ----------------------------- | -------: | -------: |
+| 2022-blake3-aes-128-gcm       | 12.2Gbps | 14.2Gbps |
+| 2022-blake3-aes-256-gcm       | 10.9Gbps | 12.5Gbps |
+| 2022-blake3-chacha20-poly1305 | 8.05Gbps | 2.35Gbps |
+| 2022-blake3-chacha8-poly1305  | 8.36Gbps | 2.60Gbps |
+| aes-128-gcm                   | 8.99Gbps | 13.5Gbps |
+| aes-256-gcm                   | 8.21Gbps | 11.9Gbps |
+| chacha20-poly1305             | 6.55Gbps | 8.66Gbps |

README.md

@@ -8,6 +8,8 @@ This repo contains specs of the Shadowsocks protocol family.
 
 1. [Shadowsocks 2022 Edition: Secure L4 Tunnel with Symmetric Encryption](2022-1-shadowsocks-2022-edition.md)
 2. [Shadowsocks 2022 Extensible Identity Headers](2022-2-shadowsocks-2022-extensible-identity-headers.md)
+3. [Shadowsocks Server Configuration URL](2022-3-shadowsocks-url.md)
+4. [Shadowsocks 2022 Implementations](2022-4-shadowsocks-implementations.md)
 
 ## How to Propose New Protocols