[whatwg] XMLHttpRequest

[Joe Gregorio]

It is just an edge case, but when using the XMLHttpRequest
setRequestHeader()[1] what are the rules for over-riding existing
headers?

For example, what if you are already authenticated and called
setRequestHeader('Authorization', 'blah')?

Does the rule for concatenation apply to headers
not created by setRequestHeader? 

    Thanks,
    -joe

[1] http://whatwg.org/specs/web-apps/current-work/#setrequestheader

-- 
Joe Gregorio        http://bitworking.org