我在使用贵项目做http代理时，中间使用tcp协议可以通，但是使用kcp协议就失败了，提示decoder err，我想解决这个问题。

[jzbg]

Expected Behavior

我在使用贵项目做http代理时，中间使用tcp协议可以通，但是使用kcp协议就失败了，提示decoder err，我想解决这个问题。

Current Behavior

一级代理日志如下，提示 released [192.168.1.32:80]
C:\Users\Administrator\Desktop\proxy-windows-amd64>proxy http -t kcp -p "0.0.0.0
:38080" --kcp-key mypassword
2023/01/10 09:58:14.251976 INFO kcp http(s) proxy on 0.0.0.0:38080
2023/01/10 10:00:20.676777 INFO GET:http://192.168.1.32/?user/login.html
2023/01/10 10:00:20.676777 INFO use parent : false, 192.168.1.32:80
2023/01/10 10:00:20.677777 INFO conn 192.168.1.31:65084 - 0.0.0.0:38080 <-> 192.
168.1.32:53461 - 192.168.1.32:80 connected [192.168.1.32:80]
2023/01/10 10:00:20.697777 INFO conn 192.168.1.31:65084 - 0.0.0.0:38080 <-> 192.
168.1.32:53461- 192.168.1.32:80 released [192.168.1.32:80]
2023/01/10 10:00:23.409177 INFO CONNECT:sug.so.360.cn:443
2023/01/10 10:00:23.409177 INFO use parent : false, sug.so.360.cn:443
2023/01/10 10:00:25.798377 INFO CONNECT:sug.so.360.cn:443
2023/01/10 10:00:25.798377 INFO use parent : false, sug.so.360.cn:443
2023/01/10 10:00:26.161377 INFO GET:http://192.168.1.112/
2023/01/10 10:00:26.161377 INFO use parent : false, 192.168.1.112:80
2023/01/10 10:00:26.163377 INFO conn 192.168.1.31:65087 - 0.0.0.0:38080 <-> 192.
168.1.32:53462 - 192.168.1.112:80 connected [192.168.1.112:80]
2023/01/10 10:00:26.189377 INFO conn 192.168.1.31:65087 - 0.0.0.0:38080 <-> 192.
168.1.32:53462- 192.168.1.112:80 released [192.168.1.112:80]

二级代理日志如下，提示http decoder read err:
C:\Users\Administrator\Desktop\proxy-windows-amd64>proxy http -t tcp -p "0.0.0.0
:8083" -T kcp -P "192.168.1.32:38080" --kcp-key mypassword
2022/01/10 09:59:30.986955 INFO use kcp parent [192.168.1.32:38080] [ ROUNDROBIN
]
2022/01/10 09:59:31.009555 INFO tcp http(s) proxy on [::]:8083
2022/01/10 10:00:22.503755 INFO GET:http://192.168.1.32/?user/login.html
2022/01/10 10:00:22.503755 INFO use parent : true, 192.168.1.32:80
2022/01/10 10:00:22.503755 INFO conn 192.168.1.111:59477 - 192.168.1.31:8083 <->
0.0.0.0:65084 - 192.168.1.32:38080 connected [192.168.1.32:80]
2022/01/10 10:00:23.503955 WARN decoder error , from 192.168.1.111:59478, ERR:ht
tp decoder read err: http decoder read err: read tcp 192.168.1.31:8083->192.168.
1.111:59478: i/o timeout
2022/01/10 10:00:25.285955 INFO CONNECT:sug.so.360.cn:443
2022/01/10 10:00:25.285955 INFO use parent : true, sug.so.360.cn:443
2022/01/10 10:00:25.286955 INFO conn 192.168.1.111:59481 - 192.168.1.31:8083 <->
0.0.0.0:65085 - 192.168.1.32:38080 connected [sug.so.360.cn:443]
2022/01/10 10:00:27.668955 INFO CONNECT:sug.so.360.cn:443
2022/01/10 10:00:27.669955 INFO use parent : true, sug.so.360.cn:443
2022/01/10 10:00:27.669955 INFO conn 192.168.1.111:59484 - 192.168.1.31:8083 <->
0.0.0.0:65086 - 192.168.1.32:38080 connected [sug.so.360.cn:443]
2022/01/10 10:00:28.001955 INFO GET:http://192.168.1.112/
2022/01/10 10:00:28.001955 INFO use parent : true, 192.168.1.112:80
2022/01/10 10:00:28.002955 INFO conn 192.168.1.111:59485 - 192.168.1.31:8083 <->
0.0.0.0:65087 - 192.168.1.32:38080 connected [192.168.1.112:80]
2022/01/10 10:00:28.995955 WARN decoder error , from 192.168.1.111:59486, ERR:ht
tp decoder read err: http decoder read err: read tcp 192.168.1.31:8083->192.168.
1.111:59486: i/o timeout

Possible Solution

Steps to Reproduce

首先启动一级代理
然后启动二级代理
浏览器设置代理
发现问题，代理失败

Context (Environment)

1. proxy version is : 12.3
2. full command is :proxy http -t tcp -p "0.0.0.0:8083" -T kcp -P "192.168.1.32:38080" --kcp-key mypassword
3. proxy http -t kcp -p "0.0.0.0:38080" --kcp-key mypassword
4. system is :win7
5. full log is: 上边已提交
6. 浏览器用的360极速浏览器21.0.1180

Detailed Description

通过kcp协议代理http，代理失败，提示http decoder err

Possible Implementation

无法推测原因

[snail007]

fixed in v12.4 latest release, update: proxy update -f

[jzbg]

fixed in v12.4 latest release, update: proxy update -f

发现v12.4 版本kcp在socket5中使用时有问题，无法支撑ftp传输。