Table of Contents
About
The HTTP
426 Upgrade Required client error response
status code
indicates that the server
refused to perform
the request
using the
current protocol
but might be willing to do so after the client
upgrades
to a different protocol. The server sends an Upgrade header
with this response to indicate the required protocol(s)
1.
Anki
Links
References
MDN. “426 Upgrade Required”. Available at: https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/426 . (Accessed: ). ↩︎