XMLHttpRequest setRequestHeader method and Cookies
This article helps you resolve the problem when you use XMLHttpRequest
setRequestHeader
method and Cookies.
Original product version: Internet Information Services
Original KB number: 234486
Symptoms
When using the XML Document Object Model (DOM), the setRequestHeader
method on the XMLHttpRequest
object does not seem to set cookie headers as expected. The first call to setRequestHeader
using the Cookie HTTP header seems to have no effect.
Resolution
To add cookies to the request, the call to setRequestHeader
for the Cookie header must be repeated because the first call is ignored:
'this value is ignored, but the step is necessary
xmlRequest.setRequestHeader "Cookie", "any non-empty string here"
'set all cookies here
xmlRequest.setRequestHeader "Cookie", "cookie1=value1; cookie2=value2"
Note
Setting cookies in this manner is atypical. Cookies are best set by the server using the Set-Cookie
header.