IIS7 - Known Issues and Workarounds

Re: iis7 and set-cookie

anilr — Wed, 09 Sep 2009 17:24:07 GMT

The bug you are hitting now is a bug in asp.net where it cannot provide multiple headers with the same name in the response/request header collections - since the header-name is the key in the collection - workaround would be to use a native module (CHttpModule) to examine the headers on the way out.

Re: iis7 and set-cookie

Glenn Slayden — Tue, 08 Sep 2009 22:31:48 GMT

This problem is still happening if you are using a managed HttpFilter to filter FastCGI/PHP.

(Vista SP2, using cgi.dll 7.0.6001.18000, which the hotfix will not update.)

When FastCGI/PHP is done with the request and the filter stream is about to be flushed, HttpContext.Response.Headers shows only the last Set-Cookie that was set by PHP. Yet, all of the cookies are somehow magically received by the client. This makes me suspect that when the bug was fixed for the hotfix, it was done in an incomplete way that only addressed the symptom.

It is a problem because I wish to examine the cookies that PHP is setting, on their way to the client.

Re: iis7 and set-cookie

janebush08 — Thu, 04 Sep 2008 11:24:02 GMT

thank you for sharing... great post

Re: iis7 and set-cookie

bills — Tue, 25 Sep 2007 22:49:12 GMT

A fix has now been released for this issue and is available for everyone to download. You can read more about it here: http://blogs.iis.net/bills/archive/2007/09/25/iis7-patch-for-windows-vista-fixes-cgi-php-applications-that-send-multiple-response-headers.aspx

Re: iis7 and set-cookie

mailant — Sat, 21 Jul 2007 04:28:08 GMT

We have a hotfix available that solves this problem (KB article). We are working on getting the content of the KB to reflect the situation a little more accurately, sorry if it's a little confusing until we update it. This is the QFE that fixes the problem where IIS7 on Vista prevents all but the last cookie sent by a browser to actually be set.

To get the hotfix, call Microsoft Customer Support Services (800-MICROSOFT or 800-642-7676) and give them the relevant KB article number (932385) and your OS platform. You'll get the hotfix right away.

Thanks,
Mai-lan

Re: iis7 and set-cookie

anilr — Sat, 28 Apr 2007 12:15:42 GMT

This is a known problem - fix is already in longhorn server beta3 builds and will definitely be in vista sp1 - details of when/whether it will be released as a qfe before then are still being worked out.

iis7 and set-cookie

lloydb — Tue, 24 Apr 2007 06:08:09 GMT

I assume it is a known issue that IIS 7 will only set the last cookie that is put into the headers by a cgi application.

Is there a timeframe for a fix on this issue.

Thanks

Lloyd Breckenridge