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Are values such as keep-alive, Close, and Upgrade of the Connection: header case sensitive?
I’m writing a simple web server and wondering whether I should be transforming the values to lower case before checking them.
I can’t find any explicit specification of the case-sensitivity of the Connection’s field values. But as Connection may contain the name of header fields:
and as those header field names are case-insensitive, I conclude that the Connection’s field value is also considered case-insensitive.