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IrineSistiana / mosdns

一个 DNS 转发器

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[Bug] AAAA QTYPE 大量出现 context deadline exceeded

lonecale opened this issue · comments

commented

在提交之前，请确认

  • 我已经尝试搜索过 Issue ，但没有找到相关问题。
  • 我正在使用最新的 mosdns 版本(或者最新的 commit)，问题依旧存在。
  • 我仔细看过 wiki 后仍然无法自行解决该问题。
  • 我非常确定这是 mosdns 核心的问题。(如果是通过第三方衍生软件使用 mosdns 核心，不确定问题源头时，请先向衍生软件开发者提交问题。)

mosdns 版本

v5.3.1

操作系统

OpenWrt

Bug 描述和复现步骤

mosdns 满足条件的转发到 Openclash DNS端口 出现大量 context deadline exceeded
但是单独

使用的配置文件

- tag: forward_openclash
    type: forward
    args:
      concurrent: 1
      upstreams:
        - addr: "127.0.0.1:7874"

  - tag: forward_remote_upstream
    type: sequence
    args:
      - exec: query_summary forward
      - matches:
        - qtype 28
        exec: prefer_ipv4
      - exec: $forward_openclash

mosdns 的 log 记录

2023-11-26 22:35:33	WARN	forward_openclash	upstream error	{"uqid": 1686, "qname": "api.snapkit.com.", "qclass": 1, "qtype": 28, "upstream": "127.0.0.1:7874", "error": "context deadline exceeded"}
2023-11-26 22:35:33	WARN	forward_openclash	upstream error	{"uqid": 1707, "qname": "p16-sg.tiktokcdn.com.", "qclass": 1, "qtype": 28, "upstream": "127.0.0.1:7874", "error": "context deadline exceeded"}
2023-11-26 22:35:34	WARN	forward_openclash	upstream error	{"uqid": 1718, "qname": "mssdk22-normal-alisg.tiktokv.com.", "qclass": 1, "qtype": 28, "upstream": "127.0.0.1:7874", "error": "context deadline exceeded"}
2023-11-26 22:35:34	WARN	forward_openclash	upstream error	{"uqid": 1722, "qname": "libra22-normal-alisg.tiktokv.com.", "qclass": 1, "qtype": 28, "upstream": "127.0.0.1:7874", "error": "context deadline exceeded"}
2023-11-26 22:35:35	WARN	forward_openclash	upstream error	{"uqid": 1727, "qname": "api.service.sin2a.g.byteoversea.net.", "qclass": 1, "qtype": 28, "upstream": "127.0.0.1:7874", "error": "context deadline exceeded"}
2023-11-26 22:35:35	WARN	forward_openclash	upstream error	{"uqid": 1737, "qname": "p16-useast2a.tiktokcdn.com.", "qclass": 1, "qtype": 28, "upstream": "127.0.0.1:7874", "error": "context deadline exceeded"}
2023-11-26 22:35:36	WARN	forward_openclash	upstream error	{"uqid": 1742, "qname": "p16-sign-va.tiktokcdn.com.", "qclass": 1, "qtype": 28, "upstream": "127.0.0.1:7874", "error": "context deadline exceeded"}
2023-11-26 22:35:36	WARN	forward_openclash	upstream error	{"uqid": 1745, "qname": "p16-amd-va.tiktokcdn.com.", "qclass": 1, "qtype": 28, "upstream": "127.0.0.1:7874", "error": "context deadline exceeded"}
2023-11-26 22:35:36	WARN	forward_openclash	upstream error	{"uqid": 1748, "qname": "pitaya-sg.tiktokv.com.", "qclass": 1, "qtype": 28, "upstream": "127.0.0.1:7874", "error": "context deadline exceeded"}
2023-11-26 22:35:37	WARN	forward_openclash	upstream error	{"uqid": 1752, "qname": "frontier.tiktokv.com.", "qclass": 1, "qtype": 28, "upstream": "127.0.0.1:7874", "error": "context deadline exceeded"}
2023-11-26 22:35:37	WARN	forward_openclash	upstream error	{"uqid": 1761, "qname": "oec22-normal-alisg.tiktokv.com.", "qclass": 1, "qtype": 28, "upstream": "127.0.0.1:7874", "error": "context deadline exceeded"}
2023-11-26 22:35:37	WARN	forward_openclash	upstream error	{"uqid": 1767, "qname": "v.group.jp.g.byteoversea.net.", "qclass": 1, "qtype": 28, "upstream": "127.0.0.1:7874", "error": "context deadline exceeded"}
2023-11-26 22:35:37	WARN	forward_openclash	upstream error	{"uqid": 1769, "qname": "bsync-sg.tiktokv.com.", "qclass": 1, "qtype": 28, "upstream": "127.0.0.1:7874", "error": "context deadline exceeded"}
2023-11-26 22:35:38	WARN	forward_openclash	upstream error	{"uqid": 1771, "qname": "sf16-sg.tiktokcdn.com.", "qclass": 1, "qtype": 28, "upstream": "127.0.0.1:7874", "error": "context deadline exceeded"}
2023-11-26 22:35:38	WARN	forward_openclash	upstream error	{"uqid": 1773, "qname": "webcast22-ws-alisg.tiktokv.com.", "qclass": 1, "qtype": 28, "upstream": "127.0.0.1:7874", "error": "context deadline exceeded"}
2023-11-26 22:35:38	WARN	forward_openclash	upstream error	{"uqid": 1778, "qname": "webcast16-ws-alisg.tiktokv.com.", "qclass": 1, "qtype": 28, "upstream": "127.0.0.1:7874", "error": "context deadline exceeded"}
2023-11-26 22:35:38	WARN	forward_openclash	upstream error	{"uqid": 1782, "qname": "pitaya-task-sg.tiktokv.com.", "qclass": 1, "qtype": 28, "upstream": "127.0.0.1:7874", "error": "context deadline exceeded"}
2023-11-26 22:35:38	WARN	forward_openclash	upstream error	{"uqid": 1786, "qname": "pull-cmaf-f16-gcp01.ttlivecdn.com.", "qclass": 1, "qtype": 28, "upstream": "127.0.0.1:7874", "error": "context deadline exceeded"}
2023-11-26 22:35:38	WARN	forward_openclash	upstream error	{"uqid": 1787, "qname": "pull-w5-sg01.tiktokcdn.com.", "qclass": 1, "qtype": 28, "upstream": "127.0.0.1:7874", "error": "context deadline exceeded"}
2023-11-26 22:35:40	WARN	forward_openclash	upstream error	{"uqid": 1805, "qname": "api19-core-c-alisg.tiktokv.com.", "qclass": 1, "qtype": 28, "upstream": "127.0.0.1:7874", "error": "context deadline exceeded"}
2023-11-26 22:35:40	WARN	forward_openclash	upstream error	{"uqid": 1808, "qname": "api16-normal-c-useast1a.tiktokv.com.", "qclass": 1, "qtype": 28, "upstream": "127.0.0.1:7874", "error": "context deadline exceeded"}
2023-11-26 22:35:41	WARN	forward_openclash	upstream error	{"uqid": 1811, "qname": "p16-sign.tiktokcdn-us.com.", "qclass": 1, "qtype": 28, "upstream": "127.0.0.1:7874", "error": "context deadline exceeded"}
2023-11-26 22:35:41	WARN	forward_openclash	upstream error	{"uqid": 1814, "qname": "pull-fcdn-base6.s.bytefcdn-oversea.com.", "qclass": 1, "qtype": 28, "upstream": "127.0.0.1:7874", "error": "context deadline exceeded"}
2023-11-26 22:35:41	WARN	forward_openclash	upstream error	{"uqid": 1817, "qname": "pull-cmaf-l10-sg01.tiktokcdn.com.", "qclass": 1, "qtype": 28, "upstream": "127.0.0.1:7874", "error": "context deadline exceeded"}
2023-11-26 22:35:42	WARN	forward_openclash	upstream error	{"uqid": 1822, "qname": "api19-normal-c-alisg.tiktokv.com.", "qclass": 1, "qtype": 28, "upstream": "127.0.0.1:7874", "error": "context deadline exceeded"}
2023-11-26 22:35:42	WARN	forward_openclash	upstream error	{"uqid": 1827, "qname": "v16.tiktokcdn.com.", "qclass": 1, "qtype": 28, "upstream": "127.0.0.1:7874", "error": "context deadline exceeded"}
2023-11-26 22:35:43	WARN	forward_openclash	upstream error	{"uqid": 1833, "qname": "push-rtmp-f5-vr-sg01.tiktokcdn.com.", "qclass": 1, "qtype": 28, "upstream": "127.0.0.1:7874", "error": "context deadline exceeded"}
2023-11-26 22:35:46	WARN	forward_openclash	upstream error	{"uqid": 1851, "qname": "api.steampowered.com.", "qclass": 1, "qtype": 28, "upstream": "127.0.0.1:7874", "error": "context deadline exceeded"}
2023-11-26 22:35:46	WARN	forward_openclash	upstream error	{"uqid": 1862, "qname": "avatars.cloudflare.steamstatic.com.", "qclass": 1, "qtype": 28, "upstream": "127.0.0.1:7874", "error": "context deadline exceeded"}
2023-11-26 22:35:47	WARN	forward_openclash	upstream error	{"uqid": 1866, "qname": "store.steampowered.com.", "qclass": 1, "qtype": 28, "upstream": "127.0.0.1:7874", "error": "context deadline exceeded"}
2023-11-26 22:35:47	WARN	forward_openclash	upstream error	{"uqid": 1869, "qname": "steamcommunity.com.", "qclass": 1, "qtype": 28, "upstream": "127.0.0.1:7874", "error": "context deadline exceeded"}
2023-11-26 22:38:24	WARN	forward_openclash	upstream error	{"uqid": 1930, "qname": "github-cloud.s3.amazonaws.com.", "qclass": 1, "qtype": 28, "upstream": "127.0.0.1:7874", "error": "context deadline exceeded"}
commented

这只能说明你的127.0.0.1:7874不会响应AAAA记录。

commented

这只能说明你的127.0.0.1:7874不会响应AAAA记录。

这些地址我发现大多都是:
响应 AAAA 应答没有期望的ANSWER，只有CNAME记录
响应 A 应答是有期望的 ANSWER

因为forward_openclash 是最后一个工作流程。这样 我无法在forward_openclash后面匹配 has_wanted_ans 判断。
还有一个方式只能 如下

  • tag: forward_remote_upstream
    type: sequence
    args:
    • matches:
      • qtype 28
        exec: prefer_ipv4
    • exec: $forward_test
    • matches:
      • has_wanted_ans
      • exec: $forward_openclash

但是这样转给forward_openclash就是应答的ip了 而不是域名了有什么好的处理办法呢 ？希望的效果是如果是双栈 只用ipv4转发forward_openclash 如果是单独IPV4或者IPV6的就直接forward_openclash

这个context deadline exceeded错误 应该就是这样 prefer_ipv4 把目标 同时进行ipv4/6请求到后面的一个forward 如何ipv4/6一方没有返回就出现