go network_error ai_generated true

Get "http://example.com": dial tcp: lookup example.com: no such host

ID: go/http-client-do-error

Also available as: JSON · Markdown · 中文
80%Fix Rate
83%Confidence
0Evidence
2025-02-20First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
1.20 active — — —

Root Cause

DNS resolution failed; the hostname does not exist or DNS server unreachable.

generic

中文

DNS 解析失败；主机名不存在或无法访问 DNS 服务器。

Workarounds

  1. 80% success 
    Use custom DNS resolver: net.Resolver{PreferGo: true, Dial: ...}
  2. 90% success 
    Check error type: if dnsErr, ok := err.(*net.DNSError); ok { handle }

Dead Ends

Common approaches that don't work:

  1. 50% fail

    May not be static; breaks if IP changes.

  2. 60% fail

    DNS issue persists; retries fail.