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outbound为trojan协议时内置dns服务异常 #1795

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moetayuko opened this issue May 21, 2022 · 6 comments
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outbound为trojan协议时内置dns服务异常 #1795

moetayuko opened this issue May 21, 2022 · 6 comments

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@moetayuko
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What version of V2Ray are you using?

V2Ray 4.45.0 (V2Fly, a community-driven edition of V2Ray.) Custom (go1.18.1 linux/amd64)
A unified platform for anti-censorship.

What's your scenario of using V2Ray?

proxychains curl google.com

What problems have you encountered?

outbound为trojan协议时内置dns服务会返回context deadline exceeded错误（详见下面log），在配置了多个备选dns服务的情况下会一直retry到最后一个失败后再返回内容。vmess协议无此问题。

值得注意的时，context deadline exceeded错误发生在A记录返回成功之后，但与vmess的日志对比发现trojan的日志里完全没有AAAA记录的输出，所以猜测该报错是否实为AAAA解析失败？

What's your expectation?

outbound为trojan协议时能正常完成dns查询。

Please attach your configuration here

Server configuration:

使用机场，无法提供。

Client configuration:

基于https://github.com/v2fly/v2ray-core/blob/master/release/config/config.json 修改log level并分别增加如下两个outbound用于对比测试：

// config.json, dns解析异常的情况
{
    "protocol": "trojan",
    "settings":{
      "servers": [
        {
          "address": "xxxxxxxx",
          "port": xxxxx,
          "password": "xxxx"
        }
      ]
    },
    "streamSettings": {
      "network": "tcp",
      "security": "tls"
    },
    "tag": "proxy"
  }
// config_vmess.json, dns解析正常，仅用于与异常状态对比
{
    "protocol": "vmess",
    "settings": {
      "vnext": [
        {
          "address": "xxxxx",
          "port": 443,
          "users": [
            {
              "id": "xxxxx",
              "security": "none"
            }
          ]
        }
      ]
    },
    "streamSettings": {
      "network": "ws",
      "security": "tls",
      "wsSettings": {
        "path": "/foobar"
      }
    },
    "tag": "proxy"
  }

Please attach error logs here

Server error log:

使用机场，无法提供。

Client trojan log:

❯ v2ray -c config.json
V2Ray 4.45.0 (V2Fly, a community-driven edition of V2Ray.) Custom (go1.18.1 linux/amd64)
A unified platform for anti-censorship.
2022/05/21 15:49:41 [Info] main/jsonem: Reading config: config.json
2022/05/21 15:49:41 [Debug] app/log: Logger started
2022/05/21 15:49:41 [Info] app/dns: DNS: created UDP client initialized for 1.1.1.1:53
2022/05/21 15:49:41 [Info] app/dns: DNS: created UDP client initialized for 114.114.114.114:53
2022/05/21 15:49:41 [Info] app/dns: DNS: created UDP client initialized for 8.8.8.8:53
2022/05/21 15:49:41 [Info] app/dns: DNS: created localhost client
2022/05/21 15:49:41 [Debug] app/proxyman/inbound: creating stream worker on 127.0.0.1:1080
2022/05/21 15:49:41 [Info] transport/internet/tcp: listening TCP on 127.0.0.1:1080
2022/05/21 15:49:41 [Warning] V2Ray 4.45.0 started
2022/05/21 15:49:53 [Info] [1747427106] proxy/socks: TCP Connect request to tcp:[2404:6800:4005:801::200e]:80
2022/05/21 15:49:53 [Info] [1747427106] app/dispatcher: sniffed domain: google.com
2022/05/21 15:49:53 [Debug] app/dns: domain google.com will use DNS in order: [UDP:1.1.1.1:53 UDP:114.114.114.114:53 UDP:8.8.8.8:53 localhost]
2022/05/21 15:49:53 [Debug] app/dns: UDP:1.1.1.1:53 querying DNS for: google.com.
2022/05/21 15:49:53 [Debug] transport/internet/udp: dispatch request to: udp:1.1.1.1:53
2022/05/21 15:49:53 [Info] transport/internet/udp: establishing new connection for udp:1.1.1.1:53
2022/05/21 15:49:53 [Debug] transport/internet/udp: dispatch request to: udp:1.1.1.1:53
2022/05/21 15:49:53 [Info] app/dispatcher: default route for udp:1.1.1.1:53
2022/05/21 15:49:53 [Info] transport/internet/tcp: dialing TCP to tcp:xxxxxxxxxxxxxxx
2022/05/21 15:49:53 [Info] proxy/trojan: tunneling request to udp:1.1.1.1:53 via tcp:xxxxxxxxxxxxxxx
2022/05/21 15:49:54 [Info] app/dns: UDP:1.1.1.1:53 got answer: google.com. TypeA -> [172.217.25.14] 203.649313ms
2022/05/21 15:49:54 [Debug] app/dns: UDP:1.1.1.1:53 updating IP records for domain:google.com.
2022/05/21 15:49:57 [Info] app/dns: failed to lookup ip for domain google.com at server UDP:1.1.1.1:53 > context deadline exceeded
2022/05/21 15:49:57 [Debug] app/dns: UDP:114.114.114.114:53 querying DNS for: google.com.
2022/05/21 15:49:57 [Debug] transport/internet/udp: dispatch request to: udp:114.114.114.114:53
2022/05/21 15:49:57 [Info] transport/internet/udp: establishing new connection for udp:114.114.114.114:53
2022/05/21 15:49:57 [Debug] transport/internet/udp: dispatch request to: udp:114.114.114.114:53
2022/05/21 15:49:57 [Info] app/dispatcher: default route for udp:114.114.114.114:53
2022/05/21 15:49:57 [Info] transport/internet/tcp: dialing TCP to tcp:xxxxxxxxxxxxxxx
2022/05/21 15:49:57 [Info] proxy/trojan: tunneling request to udp:114.114.114.114:53 via tcp:xxxxxxxxxxxxxxx
2022/05/21 15:50:01 [Info] app/dns: failed to lookup ip for domain google.com at server UDP:114.114.114.114:53 > context deadline exceeded
2022/05/21 15:50:01 [Debug] app/dns: UDP:8.8.8.8:53 querying DNS for: google.com.
2022/05/21 15:50:01 [Debug] transport/internet/udp: dispatch request to: udp:8.8.8.8:53
2022/05/21 15:50:01 [Info] transport/internet/udp: establishing new connection for udp:8.8.8.8:53
2022/05/21 15:50:01 [Debug] transport/internet/udp: dispatch request to: udp:8.8.8.8:53
2022/05/21 15:50:01 [Info] app/proxyman/outbound: failed to process outbound traffic > proxy/trojan: connection ends > context canceled
2022/05/21 15:50:01 [Info] app/dispatcher: default route for udp:8.8.8.8:53
2022/05/21 15:50:01 [Info] transport/internet/udp: failed to handle UDP input > io: read/write on closed pipe
2022/05/21 15:50:01 [Info] transport/internet/tcp: dialing TCP to tcp:xxxxxxxxxxxxxxx
2022/05/21 15:50:01 [Info] app/proxyman/outbound: failed to process outbound traffic > proxy/trojan: connection ends > context canceled
2022/05/21 15:50:01 [Info] transport/internet/udp: failed to handle UDP input > io: read/write on closed pipe
2022/05/21 15:50:01 [Info] proxy/trojan: tunneling request to udp:8.8.8.8:53 via tcp:xxxxxxxxxxxxxxx
2022/05/21 15:50:02 [Info] app/dns: UDP:8.8.8.8:53 got answer: google.com. TypeA -> [142.250.66.110] 154.079553ms
2022/05/21 15:50:02 [Debug] app/dns: UDP:8.8.8.8:53 updating IP records for domain:google.com.
2022/05/21 15:50:05 [Info] app/dns: failed to lookup ip for domain google.com at server UDP:8.8.8.8:53 > context deadline exceeded
2022/05/21 15:50:05 [Info] app/dns: Localhost got answer: google.com -> [2404:6800:4005:801::200e 142.250.204.78]
2022/05/21 15:50:05 [Info] [1747427106] app/dispatcher: default route for tcp:google.com:80
2022/05/21 15:50:05 tcp:127.0.0.1:35036 accepted tcp:[2404:6800:4005:801::200e]:80
2022/05/21 15:50:05 [Info] [1747427106] transport/internet/tcp: dialing TCP to tcp:xxxxxxxxxxxxxxx
2022/05/21 15:50:05 [Info] [1747427106] proxy/trojan: tunneling request to tcp:google.com:80 via tcp:xxxxxxxxxxxxxxx
2022/05/21 15:50:06 [Info] [1747427106] app/proxyman/inbound: connection ends > proxy/socks: connection ends > context canceled
2022/05/21 15:50:06 [Info] [1747427106] app/proxyman/outbound: failed to process outbound traffic > proxy/trojan: connection ends > context canceled
2022/05/21 15:50:09 [Info] app/proxyman/outbound: failed to process outbound traffic > proxy/trojan: connection ends > context canceled
2022/05/21 15:50:09 [Info] transport/internet/udp: failed to handle UDP input > io: read/write on closed pipe

Please attach access log here

Client vmess log:

// Please attach your server access log here.
❯ v2ray -c config_vmess.json
V2Ray 4.45.0 (V2Fly, a community-driven edition of V2Ray.) Custom (go1.18.1 linux/amd64)
A unified platform for anti-censorship.
2022/05/21 15:57:06 [Info] main/jsonem: Reading config: config_vmess.json
2022/05/21 15:57:06 [Debug] app/log: Logger started
2022/05/21 15:57:06 [Info] app/dns: DNS: created UDP client initialized for 1.1.1.1:53
2022/05/21 15:57:06 [Info] app/dns: DNS: created UDP client initialized for 114.114.114.114:53
2022/05/21 15:57:06 [Info] app/dns: DNS: created UDP client initialized for 8.8.8.8:53
2022/05/21 15:57:06 [Info] app/dns: DNS: created localhost client
2022/05/21 15:57:06 [Debug] app/proxyman/inbound: creating stream worker on 127.0.0.1:1080
2022/05/21 15:57:06 [Info] transport/internet/tcp: listening TCP on 127.0.0.1:1080
2022/05/21 15:57:06 [Warning] V2Ray 4.45.0 started
2022/05/21 15:57:13 [Info] [4260222460] proxy/socks: TCP Connect request to tcp:[2404:6800:4005:801::200e]:80
2022/05/21 15:57:13 [Info] [4260222460] app/dispatcher: sniffed domain: google.com
2022/05/21 15:57:13 [Debug] app/dns: domain google.com will use DNS in order: [UDP:1.1.1.1:53 UDP:114.114.114.114:53 UDP:8.8.8.8:53 localhost]
2022/05/21 15:57:13 [Debug] app/dns: UDP:1.1.1.1:53 querying DNS for: google.com.
2022/05/21 15:57:13 [Debug] transport/internet/udp: dispatch request to: udp:1.1.1.1:53
2022/05/21 15:57:13 [Info] transport/internet/udp: establishing new connection for udp:1.1.1.1:53
2022/05/21 15:57:13 [Debug] transport/internet/udp: dispatch request to: udp:1.1.1.1:53
2022/05/21 15:57:13 [Info] app/dispatcher: default route for udp:1.1.1.1:53
2022/05/21 15:57:13 [Info] transport/internet/websocket: creating connection to tcp:xxxxxxxxxxxxxxx
2022/05/21 15:57:14 [Info] proxy/vmess/outbound: tunneling request to udp:1.1.1.1:53 via tcp:xxxxxxxxxxxxxxx
2022/05/21 15:57:14 [Info] app/dns: UDP:1.1.1.1:53 got answer: google.com. TypeA -> [172.217.161.46] 1.142444333s
2022/05/21 15:57:14 [Debug] app/dns: UDP:1.1.1.1:53 updating IP records for domain:google.com.
2022/05/21 15:57:14 tcp:127.0.0.1:35040 accepted tcp:[2404:6800:4005:801::200e]:80 [proxy]
2022/05/21 15:57:14 [Info] app/dns: UDP:1.1.1.1:53 got answer: google.com. TypeAAAA -> [[2404:6800:4004:80a::200e]] 1.142466659s
2022/05/21 15:57:14 [Debug] app/dns: UDP:1.1.1.1:53 updating IP records for domain:google.com.
2022/05/21 15:57:14 [Info] [4260222460] app/dispatcher: default route for tcp:google.com:80
2022/05/21 15:57:14 [Info] [4260222460] transport/internet/websocket: creating connection to tcp:xxxxxxxxxxxxxxx
2022/05/21 15:57:14 [Info] [4260222460] proxy/vmess/outbound: tunneling request to tcp:google.com:80 via tcp:xxxxxxxxxxxxxxx
2022/05/21 15:57:15 [Info] [4260222460] app/proxyman/inbound: connection ends > proxy/socks: connection ends > context canceled
2022/05/21 15:57:15 [Info] [4260222460] app/proxyman/outbound: failed to process outbound traffic > proxy/vmess/outbound: connection ends > context canceled

Other configurations (such as Nginx) and logs here

If V2Ray cannot start up, please attach output from --test command

If V2Ray service is abnormal, please attach journal log here
@dream-hack
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请问楼主，为啥我日志中没有dns记录？
比如类似你上面的：
...
[Debug] app/dns: domain google.com will use DNS in order: [UDP:1.1.1.1:53 UDP:114.114.114.114:53 UDP:8.8.8.8:53 localhost]
[Debug] app/dns: UDP:1.1.1.1:53 querying DNS for: google.com.
...

我的日志级别也是debug，不管v2rayN还是命令行中运行都看不到dns的记录，请问该如何设置？

@simplerick-simplefun
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simplerick-simplefun commented Jul 4, 2022 •
edited
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看起来是个bug。
逻辑上，应该是trojan模块获得的信息传递给dns模块，dns模块识别认为出错。
这两个模块都要检查，才能搞清楚问题在哪里。我倾向于认为trojan模块可能没问题，而是dns模块处理返还的数据没处理好。
要解决的话可能要搞出来一个test版本的v2ray给题主运行，把trojan和dns处理的数据都log下来。因为这个问题不是普遍的。

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github-actions bot commented Nov 2, 2022

This issue is stale because it has been open 120 days with no activity. Remove stale label or comment or this will be closed in 5 days

@github-actions github-actions bot added the Stale label Nov 2, 2022
@moetayuko
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5.1.0仍可复现

@github-actions github-actions bot removed the Stale label Nov 3, 2022
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github-actions bot commented Mar 3, 2023

This issue is stale because it has been open 120 days with no activity. Remove stale label or comment or this will be closed in 5 days

@github-actions github-actions bot added the Stale label Mar 3, 2023
@moetayuko
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bump

@github-actions github-actions bot removed the Stale label Mar 4, 2023
@dyhkwong dyhkwong mentioned this issue Mar 31, 2023
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dyhkwong added a commit to dyhkwong/v2ray-core that referenced this issue Apr 1, 2023
@dyhkwong
proxy/trojan: fix writing UDP packet
b42f436 
close v2fly#2440, close v2fly#1795
@dyhkwong dyhkwong mentioned this issue Apr 1, 2023
Merged
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3 participants
@moetayuko @simplerick-simplefun @dream-hack