How to Handle \'Use of Closed Network Connection\' Errors in Go\'s `net/http`?

"Net/http" with "Use of Closed Network Connection" Error

When encountering a high volume of connections, issues like "use of closed network connection" and "connection reset by peer" can arise. Fortunately, there are measures to mitigate this problem.

Retry Logic with Backoff

Due to the unpredictable nature of internet connections, introducing retry logic is crucial. Instead of relying on specific error messages, consider matching "use of closed network connection" or "connection reset by peer." Implement exponential backoff to prevent overloading servers.

Increase Idle Connections

Adjust the Transport.MaxIdleConnsPerHost value to reduce the number of new connections created. The optimal setting depends on the number of remote hosts.

Go 1.5 Beta Optimization

Consider upgrading to Go 1.5 beta. Enhancements to keep-alive connections may reduce these errors.

Additional Tips

• Adjust system settings using sysctl -p. Consider optimizing tcp_max_tw_buckets and net.ipv4.tcp_keepalive_* settings.
• Monitor netstat output to identify connection status and adjust accordingly.

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