go network_error ai_generated partial

dial tcp 10.0.0.1:5432: i/o timeout

ID: go/net-dial-timeout

Also available as: JSON · Markdown
80%Fix Rate
85%Confidence
50Evidence
2023-01-01First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
1 active — — —

Root Cause

TCP connection attempt timed out. The remote host is unreachable — firewall blocking, wrong IP/port, service not running, or network routing issues.

generic

Workarounds

  1. 88% success Verify the target host and port are correct and reachable 
    Use 'nc -zv host port' or 'telnet host port' from the same machine to verify connectivity independently of Go.
  2. 82% success Use net.Dialer with a reasonable timeout and retry logic 
    dialer := &net.Dialer{Timeout: 5 * time.Second}
conn, err := dialer.DialContext(ctx, "tcp", "host:port")

    Sources: https://pkg.go.dev/net#Dialer

Dead Ends

Common approaches that don't work:

  1. Set an extremely long dial timeout 80% fail

    If the host is truly unreachable (firewall, wrong IP), no timeout duration will help — the connection will never succeed

Error Chain

Leads to:
Preceded by:
Frequently confused with: