HTTP headers
Keep-Alive HTTP Header Meaning
Keep-Alive carries connection persistence parameters for legacy HTTP/1.x connections.
Meaning
The sender is describing timeout or max request hints for a persistent connection.
Where it appears
It appears with older connection management flows and some proxies.
What to check
Check whether Connection handling, proxy behavior, and HTTP version make this header relevant.
Example
Keep-Alive: timeout=5, max=1000References
- Registry
- IANA HTTP Field Name Registry
- Guide
- MDN Keep-Alive