As the fact there are some historical reason and bugs in some browsers (desktop and mobile), not all of them support rfc5987, rfc2231, rfc6266 and others.
I'd like to detect it and do some workaround. How can I do the detection especially there are unknown number of mobile browsers?
Test Cases for HTTP Content-Disposition header field (RFC 6266) and the Encodings defined in RFCs 2047, 2231 and 5987
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