CODEWITHSUNDEEP
internet-explorerhttpfirefoxhttprequestrequest-headers
pencilCake
pencilCake

Reputation: 53243

Why does Firefox have a different Request Header than IE for the same Request?

I do not understand why the same web page with the same request creates different Request Headers for Firefox and Internet Explorer.

For example IE has some Authorization info whereas FF seems to me that it is missing that.

What is the main reason that results different Request Headers for different browser? (I assume this will give me a clue why my WCF Service call fails for FF but works in IE)

For Firefox

OPTIONS http://.....
Host: foo.bar.uk
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:18.0) Gecko/20100101 Firefox/18.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Origin: null
Access-Control-Request-Method: POST
Access-Control-Request-Headers: content-type
Connection: keep-alive
Pragma: no-cache
Cache-Control: no-cache

For Internet-Explorer

POST  http://.....
Accept: */*
Accept-Language: en-us
Content-Type: application/json
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; WOW64; Trident/5.0; SLCC2; .NET CLR 2.0.50727; .NET4.0C; .NET4.0E; InfoPath.3; .NET CLR 3.5.30729; .NET CLR 3.0.30729)
Host: foo.bar.uk
Content-Length: 19...
Connection: Keep-Alive
Pragma: no-cache
Authorization: Basic xyxzyxyxzyxyzyxz

{"Foo":"bar","KungFoo":"Judo",...}

Upvotes: 0

Views: 1339

Answers (1)

Julian Reschke
Julian Reschke

Reputation: 42027

It seems your Firefox version supports CORS (http://www.w3.org/TR/cors/), whereas your IE version does not.

Upvotes: 1

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