Mysterious bug with asp.net!

[Jens Jensen]

Hi,
We are streaming a pdf file to clients via Internet explorer .The pdf file
is streamed over https .
Sometime, when the file opens, it is seen for a few millisecond and is
killed again. Meaning , the client has no chance to view it.

This only happens for some clients. We have created a help link wich solve
the problem without using https. Just http.

We have also observed that setting "dont save encrypted file" in IE settings
solves the problem.

we are wondering about what causes this and how to provide a general
solution, hoppefully on the server side.

Any help will be higly appreciated.

Many thanks in advance
JJ

[Ray Booysen]

Sounds like a client side problem, not ASP.NET

Does it do this in all browsers? Can we have some sample code of how
you are streaming it?

Jens Jensen wrote:

Hi,
We are streaming a pdf file to clients via Internet explorer .The pdf file
is streamed over https .
Sometime, when the file opens, it is seen for a few millisecond and is
killed again. Meaning , the client has no chance to view it.

This only happens for some clients. We have created a help link wich solve
the problem without using https. Just http.

We have also observed that setting "dont save encrypted file" in IE settings
solves the problem.

we are wondering about what causes this and how to provide a general
solution, hoppefully on the server side.

Any help will be higly appreciated.

Many thanks in advance
JJ

[bruce barker \(sqlwork.com\)]

this is an IE bug / feature of IE mime handling.

request page
read header for mime type
if external viewer
determine mime hander
load mime handler
pass url to mimehandler
mimehander requests url
mimehandler displays request
else
display html

because the mime handler rerequest the page, all works well when it in the
cache (on disk). if the page must be downloaded again, there are often
problems.

some things you can do server side to help make IE reliable.

1) keep url short
2) use the correct file extension (mypage.pdf) by using an httphandler.
3) only do a get (no form posts)
-- bruce (sqlwork.com)


"Jens Jensen" <[e-mail]> wrote in message
news:%2****************@TK2MSFTNGP02.phx.gbl...

Hi,
We are streaming a pdf file to clients via Internet explorer .The pdf file
is streamed over https .
Sometime, when the file opens, it is seen for a few millisecond and is
killed again. Meaning , the client has no chance to view it.

This only happens for some clients. We have created a help link wich solve
the problem without using https. Just http.

We have also observed that setting "dont save encrypted file" in IE
settings solves the problem.

we are wondering about what causes this and how to provide a general
solution, hoppefully on the server side.

Any help will be higly appreciated.

Many thanks in advance
JJ

[Jens Jensen]

Great this looks like the kind of support i was looking for.
Many thanks
JJ

[Edwin Knoppert]

My experiance was the roles not handled, do you have forms auth...?
Direct open failed while save as.. succeeded.

"Jens Jensen" <[e-mail]> schreef in bericht
news:%2****************@TK2MSFTNGP02.phx.gbl...

Hi,
We are streaming a pdf file to clients via Internet explorer .The pdf file
is streamed over https .
Sometime, when the file opens, it is seen for a few millisecond and is
killed again. Meaning , the client has no chance to view it.

This only happens for some clients. We have created a help link wich solve
the problem without using https. Just http.

We have also observed that setting "dont save encrypted file" in IE
settings solves the problem.

we are wondering about what causes this and how to provide a general
solution, hoppefully on the server side.

Any help will be higly appreciated.

Many thanks in advance
JJ