http-headers Accept-Charset: (Request) Only accept UTF-8, iso-8859-1 with a preference
Example
Request:"http://example.com"
GET / HTTP/1.1 Host: example.com User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:53.0) Gecko/20100101 Firefox/53.0 Accept: text/html,application/xml;q=0.9,*/*;q=0.8 Accept-Charset: UTF-8, iso-8859-1;q=0.8 Accept-Language: en-US,en;q=0.5 Accept-Encoding: gzip, deflate Connection: keep-alive
The client will accept UTF-8 and iso-8859-1 char sets but prefers UTF-8 (which has a quality factor of 1.0).
