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I'm not sure that's what's happening with me, but something worth noting. Just did some testing, and CF does indeed send an incorrect content-length value if cflocation is called following cfhtmlhead. And any calls to cfheader are also ignored if cflocation is used, so you can't even manually add a "Connection: close" header to help the client determine the end of the response.

I probably won't have time to dig into this issue any more this week, but I'll get back to it sometime and if I find a solution, share it with the list.


Mark


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Hey,  yeah I have had mixed results but mainly its caused by :

1) Browser makes request for the CFM that has CFHTMLHead and CFLOCATION.

2) Server executes CFHTMLHead and store the string in a "special"
buffer.

3) Server executes CFLOCATION, dumps the buffer in 2 to the output
buffer, then dumps the "standard" HTTP header and HTML text (for
backwards compatibility for braindead browsers such as Mosaic 2.0) for a
HTTP 302 (Object Moved).

4) The HTTP header in 3 miscalculates the length of the HTTP payload,
and only accounted for the HTML text in 3, and not the other stuff in 2
(the CFHTMLHead buffer). Hence, the Content-Length header is totally
wrong.

5) MS I.E. thinking it is all hot and cool, decided to TRUST the
Content-Length in 4, and clears its buffer by the amount specified in
Content-Length, and hence, did not clear the CFHTMLHead stuff that it
received from the server.

6) Then MS I.E. dutifully picked up the following page based on the
"Location" HTTP header, and then dumped everything to the HTML rendering
engine which includes the HTML from the final page prepended with the
uncleared buffer in 2.

Hence, you get the junky stuff on top of the page.

Lesson? Try not to use CFHTMLHead until you are really really sure that
it is the FINAL page and the user won't be redirected.

<sic/>



-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Stephen Moretti
(cfmaster)
Sent: 17 December 2004 16:40
To: Coldfusion Development
Subject: Re: [CF-Dev] HTTP headers appearing in browser

>- see footer for list info -<
Robertson-Ravo, Neil (RX) wrote:

>>- see footer for list info -<
>>
>>
>Are you using <cfhtmlhead> in your application?  If so then its most likely
the cause.
>
Nah mate!  I use cfhtmlhead all the time and never see this problem.

It is a problem that I've seen in the past, but for the life of me I
can't remember what causes it.

What version of CF are you using Mark?  Any chance of a URL to look at?
I vaguely remember something to do with the HTML, but its completely
eluding me at the minute.

Stephen

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