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HTTP header reference
Upgrade

← All headersGeneral header

What is an Upgrade header?

Asks to switch the current connection to a different protocol, such as from HTTP/1.1 to WebSocket.

Other General headers

Cache-Control Connection Content-Encoding Content-Length Content-Type Date Pragma Trailer Transfer-Encoding Via Warning

Kawze

Uptime monitoring that tells you the moment something breaks.

30-day money-back guarantee on every paid plan. Details

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