Socks5/UDP 协议请求服务器端口

[Xqing-hup]

Describe the bug

netch 在udp请求阶段端口的错误

In [1]: a = b'\x00\x00\x00\x01m\xa9@\xef\x92\x8b\xe5\x80x\xcd\x1f\xa6f\xda\n
...: \xaee\x00\x87\xe6n\xb7\x98\x9a\x1b\xe2\xd1X\xbc4?/\xfcl\x1es1\x96\x9
...: 6\xf9\xc9R[\xca\x0b\xab\x05\xbf\xe8\x0fAp\x8d8\x0c-'

To Reproduce

1. 在本地127.0.0.1 搭建socks5 端口同时支持tcp/udp协议
2. 创建自定义udp端口
3. 启动程序模式点击nat测试，最终OnUDP然而实际上并没有成功

Log

application.log

Environment

Windows 11
Python 11
netch1.9.7

Additional information

RSV FRAG ATYP DST.ADDR DST.PORT DATA
2 1 1 Variable 2 Variable
UDP 请求头中的字段分别为:

RSV 保留, 固定为 X'0000'
FRAG 当前的分段号
ATYP 随后的地址类型
IPv4 地址: X'01'
域名: X'03'
IPv6 地址: X'04'
DST.ADDR 目标地址
DST.PORT 目标端口, 网络字节序
DATA 用户数据

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