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修订代码，注释，示例

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This commit is contained in:
hahahrfool
2022-03-29 21:58:23 +08:00
parent b63b90400a
commit 01d681f14f
7 changed files with 99 additions and 80 deletions
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10
proxy/socks5/client.go
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@@ -29,7 +29,7 @@ func Client_EstablishUDPAssociate(conn net.Conn) (port int, err error) {
return
}
if n != 2 || ba[0] != Version5 || ba[1] != 0 {
return 0, &utils.NumErr{Prefix: "EstablishUDPAssociate,protocol err", N: 1}
return 0, utils.NumErr{Prefix: "EstablishUDPAssociate,protocol err", N: 1}
}
//请求udp associate 阶段
@@ -45,6 +45,8 @@ func Client_EstablishUDPAssociate(conn net.Conn) (port int, err error) {
ba[8] = 0 //port
ba[9] = 0 //port
// 按理说要告诉服务端我们要用到的ip和端口，但是我们不知道，所以全填零
// 在内网中的话，我们是可以知道的，但是因为内网很安全所以无所谓；在NAT中我们肯定是不知道的。
// 如果是在纯外网中则是可以知道的，但是为啥非要socks5这么不安全的协议呢？所以还是不予考虑。
_, err = conn.Write(ba[:10])
if err != nil {
@@ -56,7 +58,7 @@ func Client_EstablishUDPAssociate(conn net.Conn) (port int, err error) {
return
}
if n != 10 || ba[0] != Version5 || ba[1] != 0 || ba[2] != 0 || ba[3] != 1 || ba[4] != 0 || ba[5] != 0 || ba[6] != 0 || ba[7] != 0 {
return 0, &utils.NumErr{Prefix: "EstablishUDPAssociate,protocol err", N: 2}
return 0, utils.NumErr{Prefix: "EstablishUDPAssociate,protocol err", N: 2}
}
port = int(ba[8])<<8 | int(ba[9])
@@ -126,7 +128,7 @@ func Client_ReadUDPResponse(udpConn *net.UDPConn, supposedServerAddr *net.UDPAdd
return
}
if buf[0] != 0 || buf[1] != 0 || buf[2] != 0 {
e = &utils.NumErr{Prefix: "EstablishUDPAssociate,protocol err", N: 1}
e = utils.NumErr{Prefix: "EstablishUDPAssociate,protocol err", N: 1}
return
}
atype := buf[3]
@@ -149,7 +151,7 @@ func Client_ReadUDPResponse(udpConn *net.UDPConn, supposedServerAddr *net.UDPAdd
target.Name = string(nameBuf)
default:
e = &utils.NumErr{Prefix: "EstablishUDPAssociate,protocol err", N: 2}
e = utils.NumErr{Prefix: "EstablishUDPAssociate,protocol err", N: 2}
return
}