[BUG] XDNS not work with sockopt.dialerProxy in outbound

[fanymagnet]

After merge PR #5872 outbound with sockopt.dialerProxy not working

{
  "protocol": "vless",
  "settings": {
    "address": "127.0.0.1",
    "port": 53,
    "id": "xxxxxxxx-xxxx-xxxx-xxxx-xxxx",
    "encryption": "none"
  },
  "streamSettings": {
    "network": "kcp",
    "kcpSettings": {
      "mtu": 130
    },
    "finalmask": {
      "udp": [
        {
          "type": "xdns",
          "settings": {
            "resolvers": ["domain.com+udp://<SERVER-IP>:53"]
          }
        }
      ]
    },
    "sockopt": {
      "dialerProxy": "direct-out"
    }
  },
  "tag": "vless-kcp-xdns-out"
}

...

{
  "protocol": "freedom",
  "settings": {
    "domainStrategy": "ForceIPv4"
  },
  "streamSettings": {
    "sockopt": {
      "mark": 5
    }
  },
  "tag": "direct-out"
}

[Fangliding]

应该已经修了 现在不自己dial了 烂pr

[fanymagnet]

@Fangliding I use build from current master and it not work

[LjhAUMEM]

"address": "127.0.0.1",
"port": 53,

emmm，如果你要 dialer proxy 的话就不能写 "address": "127.0.0.1"，且 mult resolver 会失效

[fanymagnet]

The value in "address" should be ignored; without dialerProxy, everything works with 127.0.0.1. I'm just trying to replicate my configuration before this PR #5872, but it doesn't work. Old configuration:

    {
      "protocol": "vless",
      "settings": {
        "vnext": [
          {
            "address": "<SERVER_IP>",
            "port": 53,
            "users": [
              {
                "id": "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
                "encryption": "none"
              }
            ]
          }
        ]
      },
      "streamSettings": {
        "network": "kcp",
        "kcpSettings": {
          "mtu": 130
        },
        "finalmask": {
          "udp": [
            {
              "type": "xdns",
              "settings": {
                "domain": ["domain.com"]
              }
            }
          ]
        },
        "sockopt": {
          "dialerProxy": "direct-out"
        }
      },
      "tag": "vless-kcp-xdns-out"
    }

[LjhAUMEM]

噢，昨晚忘记说了

    {
      "protocol": "vless",
      "settings": {
        "vnext": [
          {
            "address": "<SERVER_IP>",
            "port": 53,
            "users": [
              {
                "id": "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
                "encryption": "none"
              }
            ]
          }
        ]
      },
      "streamSettings": {
        "network": "kcp",
        "kcpSettings": {
          "mtu": 130
        },
        "finalmask": {
          "udp": [
            {
              "type": "xdns",
              "settings": {
                "resolvers": ["domain.com+udp://0.0.0.0:0"]
              }
            }
          ]
        },
        "sockopt": {
          "dialerProxy": "direct-out"
        }
      },
      "tag": "vless-kcp-xdns-out"
    }

这样就可以了，@fanymagnet ，愉快的使用 dialer p

[fanymagnet]

@LjhAUMEM 0.0.0.0:0 isn't working; I'm getting these errors

On v26.4.25

2026/05/03 01:31:30.851257 [Info] [242765280] app/proxyman/outbound: app/proxyman/outbound: failed to process outbound traffic > proxy/vless/outbound: failed to find an available destination > common/retry: [transport/internet/kcp: mask err > transport/internet/finalmask/xdns: invalid port] > common/retry: all retry attempts failed

On current master panic

May 03 01:32:56 dev xray[43538]: panic: interface conversion: net.Addr is *net.TCPAddr, not *net.UDPAddr
May 03 01:32:56 dev xray[43538]: goroutine 117 [running]:
May 03 01:32:56 dev xray[43538]: github.com/xtls/xray-core/transport/internet/kcp.DialKCP({0x1625490, 0x1397a1fa0170}, {{0x1625860, 0x1397a2456680}, 0x35, 0x3}, 0x1397a12122a0)
May 03 01:32:56 dev xray[43538]:         github.com/xtls/xray-core/transport/internet/kcp/dialer.go:61 +0xa45
May 03 01:32:56 dev xray[43538]: github.com/xtls/xray-core/transport/internet.Dial({0x1625490, 0x1397a1fa0170}, {{0x1625860?, 0x1397a2456680?}, 0x6680?, 0x1397?}, 0x0?)
May 03 01:32:56 dev xray[43538]:         github.com/xtls/xray-core/transport/internet/dialer.go:63 +0x168
May 03 01:32:56 dev xray[43538]: github.com/xtls/xray-core/app/proxyman/outbound.(*Handler).Dial(0x1397a119c3f0, {0x1625490, 0x1397a1fa0170}, {{0x1625860, 0x1397a2456680}, 0x35, 0x2})
May 03 01:32:56 dev xray[43538]:         github.com/xtls/xray-core/app/proxyman/outbound/handler.go:316 +0x971
May 03 01:32:56 dev xray[43538]: github.com/xtls/xray-core/proxy/vless/outbound.(*Handler).Process.func2()
May 03 01:32:56 dev xray[43538]:         github.com/xtls/xray-core/proxy/vless/outbound/outbound.go:194 +0x4c
May 03 01:32:56 dev xray[43538]: github.com/xtls/xray-core/common/retry.(*retryer).On(0x1397a1b4bd90, 0x1397a1b4be40)
May 03 01:32:56 dev xray[43538]:         github.com/xtls/xray-core/common/retry/retry.go:27 +0xc3
May 03 01:32:56 dev xray[43538]: github.com/xtls/xray-core/proxy/vless/outbound.(*Handler).Process(0x1397a1332d70, {0x1625490, 0x1397a1fa0170}, 0x1397a127ac80, {0x16227d8, 0x1397a119c3f0})
May 03 01:32:56 dev xray[43538]:         github.com/xtls/xray-core/proxy/vless/outbound/outbound.go:192 +0x385
May 03 01:32:56 dev xray[43538]: github.com/xtls/xray-core/app/proxyman/outbound.(*Handler).Dispatch(0x1397a119c3f0, {0x1625490, 0x1397a1fa0170}, 0x1397a127ac80)
May 03 01:32:56 dev xray[43538]:         github.com/xtls/xray-core/app/proxyman/outbound/handler.go:242 +0x930
May 03 01:32:56 dev xray[43538]: created by github.com/xtls/xray-core/transport/internet.redirect in goroutine 115
May 03 01:32:56 dev xray[43538]:         github.com/xtls/xray-core/transport/internet/dialer.go:123 +0x439

[LjhAUMEM]

@fanymagnet I see, fix it in #6063.

[Fangliding]

怎么这么乱

[LjhAUMEM]

怎么这么乱

指 0.0.0.0:0？因为 xdns 验证了返回地址，而 dialer p hijack 为了 0.0.0.0:0

[LjhAUMEM]

另外 xdns/kcp-udpmask 的 dialer proxy 应该也从未工作过，即使没加 multi resolvers，因为上层 kcp 接受不了 *net.UDPAddr 之外的地址，之前一直都是 tcpAddr

记错了，是入站接受不了 *net.UDPAddr 之外的，出站没事

[fanymagnet]

@LjhAUMEM 0.0.0.0:0 with dialerProxy will work if you don't return an error to port 0 in this location

Xray-core/transport/internet/finalmask/xdns/client.go

Lines 88 to 91 in 228f1e1

	port, _ := strconv.Atoi(p)
	if port == 0 {
	return nil, errors.New("invalid port")
	}

otherwise there is an error

2026/05/04 00:21:22.025707 [Info] [1719858076] app/proxyman/outbound: app/proxyman/outbound: failed to process outbound traffic > proxy/vless/outbound: failed to find an available destination > common/retry: [transport/internet/kcp: mask err > transport/internet/finalmask/xdns: invalid port] > common/retry: all retry attempts failed