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What does it mean if the header is present but with an empty
language value? Accept-Language: In RFC3261, the Accept-Language section defines the headers
meaning with a language value present and its meaning when the header is not
present. 20.3 Accept-Language The Accept-Language header field is
used in requests to indicate the preferred languages for reason phrases,
session descriptions, or status responses carried as message
bodies in the response. If no Accept-Language header field is
present, the server SHOULD assume all languages are acceptable to the client. The Accept-Language header field
follows the syntax defined in [H14.4]. The rules for ordering
the languages based on the "q" parameter apply to SIP as well. Example: Accept-Language: da,
en-gb;q=0.8, en;q=0.7 The grammar for Accept-Language shows the language value as
optional: Accept-Language
= "Accept-Language" HCOLON
[ language *(COMMA language) ] Regards, Mike |