[Bug] i/o timeout

[AndyLin2020]

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

v5.3.4-0-g525c394

操作系统

Debian 12

Bug 描述和复现步骤

Debian 12为旁路由，部署了AdguardHome（：53）+上游DNS服务器mosdns（：5335），AdguardHome三分钟就会出现以下三条日志，但是解析都正常，不知道哪里设置有问题？

2025/02/21 14:23:51.591288 ERROR response received addr=127.0.0.1:5335 proto=udp status="exchanging with 127.0.0.1:5335 over udp: read udp 127.0.0.1:34728->127.0.0.1:5335: i/o timeout"
2025/02/21 14:23:56.661629 ERROR response received addr=127.0.0.1:5335 proto=udp status="exchanging with 127.0.0.1:5335 over udp: read udp 127.0.0.1:30589->127.0.0.1:5335: i/o timeout"
2025/02/21 14:24:01.741718 ERROR response received addr=127.0.0.1:5335 proto=udp status="exchanging with 127.0.0.1:5335 over udp: read udp 127.0.0.1:64952->127.0.0.1:5335: i/o timeout"

使用的配置文件

log:
  level: error
  file: "/var/log/mosdns.log"

plugins:
  - tag: geosite_cn
    type: domain_set
    args:
      files:
        - "/var/mosdns/geosite_cn.txt"

  - tag: geoip_cn
    type: ip_set
    args:
      files:
        - "/var/mosdns/geoip_cn.txt"

  - tag: geosite_no_cn
    type: domain_set
    args:
      files:
        - "/var/mosdns/geosite_geolocation-!cn.txt"

  - tag: hosts
    type: hosts
    args:
      files:
        - "/var/mosdns/hosts.txt"

  - tag: lazy_cache
    type: cache
    args:
      size: 51200 
      lazy_cache_ttl: 432000  
      dump_file: "/etc/mosdns/cache.dump"
      dump_interval: 1200  

  - tag: forward_local
    type: forward
    args:
      concurrent: 4
      upstreams:
        - addr: https://223.6.6.6/dns-query
          enable_pipeline: true
          insecure_skip_verify: false
          idle_timeout: 30
        - addr: https://sm2.doh.pub/dns-query
          enable_pipeline: true
          insecure_skip_verify: false
          idle_timeout: 30
        - addr: https://1.12.12.12/dns-query
          enable_pipeline: true
          insecure_skip_verify: false
          idle_timeout: 30
        - addr: https://120.53.53.53/dns-query
          enable_pipeline: true
          insecure_skip_verify: false
          idle_timeout: 30 

 
  - tag: forward_remote
    type: forward
    args:
      concurrent: 4
      upstreams:
        - addr: https://8.8.8.8/dns-query
          bootstrap: 8.8.8.8
          enable_pipeline: true
          insecure_skip_verify: false
          idle_timeout: 30
        - addr: https://8.8.4.4/dns-query
          bootstrap: 8.8.8.8
          enable_pipeline: true
          insecure_skip_verify: false
          idle_timeout: 30

        - addr: "tls://1.1.1.1:853"   
          enable_pipeline: true
          insecure_skip_verify: false
        - addr: "tls://1.0.0.1:853"
          enable_pipeline: true
          insecure_skip_verify: false
 
  - tag: local_sequence
    type: sequence
    args:
      - exec: $forward_local
  
  - tag: remote_sequence
    type: sequence
    args:
      - exec: prefer_ipv4
      - exec: $forward_remote

  - tag: has_resp_sequence
    type: sequence
    args:
      - matches: has_resp
        exec: accept

  - tag: query_is_local_ip
    type: sequence
    args:
      - exec: $local_sequence
      - matches: "!resp_ip $geoip_cn"
        exec: drop_resp

  - tag: query_is_remote
    type: sequence
    args:
      - exec: $remote_sequence

  - tag: fallback
    type: fallback
    args:
      primary: query_is_remote
      secondary: query_is_remote  
      threshold: 300  
      always_standby: true

  - tag: query_is_local_domain
    type: sequence
    args:
      - matches: qname $geosite_cn
        exec: $local_sequence

  - tag: query_is_no_local_domain
    type: sequence
    args:
      - matches: qname $geosite_no_cn
        exec: $remote_sequence

  - tag: main_sequence
    type: sequence
    args:
      - exec: $hosts
      - exec: jump has_resp_sequence
      - exec: $lazy_cache
      - matches: qname & /var/mosdns/direct-list.txt
        exec: $forward_local
      - exec: jump has_resp_sequence
      - exec: $query_is_local_domain
      - exec: jump has_resp_sequence
      - exec: $query_is_no_local_domain
      - exec: jump has_resp_sequence
      - exec: $fallback

  - tag: udp_server
    type: udp_server
    args:
      entry: main_sequence
      listen: "0.0.0.0:5335"

  - tag: tcp_server
    type: tcp_server
    args:
      entry: main_sequence
      listen: "0.0.0.0:5335"

mosdns 的 log 记录

[yyysuo]

Adguard Home中用mosdns的tcp呗。

[AndyLin2020]

Adguard Home中用mosdns的tcp呗。

改用tcp后就没那烦人的日志了