Read HTTP Headers with Javascript???

[Rick Edwards]

Can I do this? If I'm passing info in my HTTP headers, can I read this info
via Javascript? I've seen some hope out there, but nothing definitive - I'm
hoping to get that answer here....

TIA
Rick

[Stephen]

Re: Read HTTP Headers with Javascript???

Rick Edwards wrote:
[color=blue]
> Can I do this? If I'm passing info in my HTTP headers, can I read this info
> via Javascript? I've seen some hope out there, but nothing definitive - I'm
> hoping to get that answer here....
>
> TIA
> Rick
>[/color]

It's one of those ... weeeellll, sort-of... kinds of things.
Which headers? Those sent with a request or those received with a response?

Javascript, per se, cannot do this. But (here's the "sort-of") see

Request: (watch for wrapping long url)
(using php; similar could be done with asp)

http://groups.google.com/groups?q=variable+from+php+is+passed&hl=en&lr=&ie=UTF-8&selm=Xns93FEDE5D26C5BEdovanderZouwen%40216.168.3.44&rnum=1

(using server-side includes)

http://groups.google.com/groups?hl=en&lr=&ie=UTF-8&frame=right&th=1133033fefa4990a&seekm=Xns93FEDE5D26C5BEdovanderZouwen%40216.168.3.44#link9

Response: (watch for wrapping long url)

http://groups.google.com/groups?hl=en&lr=&ie=UTF-8&oe=UTF-8&threadm=3D8EFD99.8090709%40t-online.de&rnum=1&prev=/groups%3Fhl%3Den%26lr%3D%26ie%3DUTF-8%26oe%3DUTF-8%26q%3Dhttp%2Bheaders%26btnG%3DGoogle%2BSearch%26meta%3Dgroup%253Dcomp.lang.javascript

google for "HTTP Headers" in the comp.lang.javas cript group

Regards,
Stephen

[Alexander Ignatyev]

Re: Read HTTP Headers with Javascript???


"Rick Edwards" <ricke@NOSPAMsa sktel.net> wrote :
[color=blue]
> Can I do this? If I'm passing info in my HTTP headers, can I read this[/color]
info[color=blue]
> via Javascript? I've seen some hope out there, but nothing definitive -[/color]
I'm[color=blue]
> hoping to get that answer here....[/color]

For IE (5+,don't remember exactly) you can use
XMLHttpRequest object ->getAllResponse Headers method

HTH.

[Martin Honnen]

Re: Read HTTP Headers with Javascript???



Rick Edwards wrote:
[color=blue]
> Can I do this? If I'm passing info in my HTTP headers, can I read this info
> via Javascript? I've seen some hope out there, but nothing definitive - I'm
> hoping to get that answer here....[/color]

Cookies are sent as HTTP headers and JavaScript provides access to
cookies per
document.cookie
Some selected HTTP header information is also made accessible by
JavaScript for instance
document.charac terSet
in Netscape and
document.charse t
in IE.
In general however if your server sends a HTTP response to the browser
that is rendered inside of a window then JavaScript doesn't provide
access to HTTP response headers.
The only way you get access to such headers is if you use XMLHttpRequest
to send and receive a HTTP request

--

Martin Honnen

http://JavaScript.FAQTs.com/