HTTP_REFERER doesn't have any value

[920506]

Hi, all,

I have a form test.asp with certain fields will show depend on what page it comes from.
i.e.
I set up

http://www.mydomain.com/somedirectory

redirect to
test.asp, in test.asp, I wrote:
sReferer = Request.ServerVariables("HTTP_REFERER")
if sReferer="

http://www.mydomain.com/somedirectory

" then
displayfields
but somehow is sReferer is empty.
what should I do? I just stuck.
Thank you.
Betty

 

[DotNetGnat]

try this:

if instr(Request.ServerVariables("HTTP_REFERER"),"[URL unfurl="true"]www.mydomain.com/somedirectory")[/URL] > 0  then
'do something
else
'do someother thing
end if

-DNG

 

[ChrisHirst]

HTTP_REFERER will only have a value when a link has been clicked.

Also it can be blocked by software on the client machine.



Chris.

Indifference will be the downfall of mankind, but who cares?
Woo Hoo! the cobblers kids get new shoes.
People Counting Systems

So long, and thanks for all the fish.

 

[920506]

Hi, Chris,
I guess it's all blocked.
I already set up a specific link on a page already,
my test.asp still doesn't any charaters from

Request.ServerVariables("HTTP_REFERER")

It just empty?
any other way go around?

Betty

 

[ChrisHirst]

click through to

http://www.asp101.com/samples/servvars.asp

and see if it has a value in your browser.

do you have Nortons ISS installed.
One way around is to store the current URI in a session variable and retrieve that value.

Chris.

Indifference will be the downfall of mankind, but who cares?
Woo Hoo! the cobblers kids get new shoes.
People Counting Systems

So long, and thanks for all the fish.

 

[920506]

Chris,
I tested it, and I did see the referer variable.
So I did in my program in the same way. When I put link on the same domain as the program, it seems working fine. My problem is: the link is on different dommain(I didn't specify clearly) and the program is running on another domain.

That is: link on

http://www.domain1.com/directory

the program test.asp is running on

http://www.domain2.com

When the test.asp tried to access Request.ServerVariables("HTTP_REFERER"), it's just empty.
I am justing wondering how webtrend monitoring referral page if cross domain referer page cannot be obtained.

Thank you.
Betty

 

[ChrisHirst]

Have you tried writing out all the servervariables to see if any are working?

for each vari in request.servervariables
    with response
         .write vari
         .write " = "
         .write request.servervariables(vari)
         .write "<br>"
    end with
next

webtrends uses javascript to track page views/referers and if the referer field is blocked it doesn't.


Chris.

Indifference will be the downfall of mankind, but who cares?
Woo Hoo! the cobblers kids get new shoes.
People Counting Systems

So long, and thanks for all the fish.

 

[920506]

Yes, it does show many server variables, but not http_referer.

Thanks
Betty

 

[ChrisHirst]

Very odd, simple logic says it's something at the server.

anything such as Nortons running on the server?
Have you tried different browsers?





Chris.

Indifference will be the downfall of mankind, but who cares?
Woo Hoo! the cobblers kids get new shoes.
People Counting Systems

So long, and thanks for all the fish.

 

[DotNetGnat]

did you try the code i provided...

-DNG

 

[ChrisHirst]

ermm, if HTTP_REFERER is blank, testing for a value isn't going to work

Chris.

Indifference will be the downfall of mankind, but who cares?
Woo Hoo! the cobblers kids get new shoes.
People Counting Systems

So long, and thanks for all the fish.

 

[Sheco]

HTTP_REFERER is a value provided by the web browser to the server purely as a courtesy. The HTTP protocol does not require the browser to provide a correct value for HTTP_REFERER or any value at all.

No web application should be designed that relies on the accuracy of this value… treat it as merely an informational curiosity for your log files.

 

[920506]

Hi all,
Thanks for all your guys input. I gave up using HTTP_REFERER. I just added a coulpe fields with values to indicate where does the page come from.
It worked out.
I believe Sheco's comment is right. I should not depend on this variable in my program.
Betty