Sharepoint and Javascript Cancel event

I have a public site where users log into (F5 APM) and get to an internal Sharepoint page. The external site is called example.company.com and internall the Sharepoint site is called example_isa.company.com (it used to be behind an ISA server). I have a stream irule event so the user only ever sees example.company.com Everything works great but one thing.

When a user goes to the "upload a document" page and clicks on Cancel, it errors out. the cancel code shows this -

example_isa.company.com

I have the following code


when HTTP_RESPONSE {
     STREAM::disable
     if { [HTTP::header is_redirect] } {
     HTTP::header replace Location [string map {"http://example_isa.company.com" "https://example.company.com"} [HTTP::header value Location]] }
     if {[HTTP::header value Content-Type] contains "text"}{
     STREAM::expression {@http://example.company.com@https://example.company.com@ @http://example.company.com@https://example.company.com@ @http:\u002f\u002f@https:\u002f\u002f@ @http:\\u002f\\u002f@https:\\u002f\\u002f@ }
     STREAM::enable }}

when STREAM_MATCHED {
   log local0. "matched: [STREAM::match]"}

With this, i get a 404 error and the URL looks like this -

https://example.company.com/u002f/u002fexample_isa.company.com/InformationTechnology/Forms/AllItems.aspx

Any Ideas??

14 Replies

Chris_Miller
Altostratus
Mar 19, 2013
So basically, the goal is to rewrite this:

http:\u002f\u002fexample_isa.company.com\u002fInformationTechnology\u002fFo...Items.aspx

to this:

https://example.company.com/...
George_Watkins_
Historic F5 Account
Mar 19, 2013
The problem is that those unicode characters are not being interpreted due to the '{ }' around the stream expression. Can you give this a shot?

when HTTP_RESPONSE {

STREAM::disable

set encoding_header [HTTP::header value Encoding]

if { $encoding_header contains "text)" } {

if { $encoding_header contains "charset=utf-8" } {

set slash "\u002f"

} else {

set slash "/"

}

set expression "@http:$slash$slash@https:$slash$slash@"

STREAM::expression $expression

STREAM::enable

}

}

when STREAM_MATCHED {

log local0. "matched: [STREAM::match]"

}

Regards,

George
AngryCat_52750
Nimbostratus
Mar 19, 2013
George,

Can i have two stream profiles coz i still need to stream the other stuff..
Chris_Miller
Altostratus
Mar 19, 2013
Something like this perhaps?

when HTTP_RESPONSE {

set host "www.example.com"

STREAM::disable

if { [HTTP::header is_redirect] } {

HTTP::header replace Location [string map {"http://example_isa.company.com" "https://example.company.com"} [HTTP::header value Location]] }

if {[HTTP::header value Content-Type] contains "text"}{

if { $encoding_header contains "charset=utf-8" } {

set slash "\u002f"

} else {

set slash "/"

}

STREAM::expression {@http://example.company.com@https://example.company.com@ @http://example.company.com@https://example.company.com@ "@http:$slash$slash@https:$slash$slash$host@" }

STREAM::enable }}

when STREAM_MATCHED {

log local0. "matched: [STREAM::match]"}
George_Watkins_
Historic F5 Account
Mar 19, 2013
Sure, you just need to append that expression variable. Make sure you add a space after every entry or the expression syntax will be off. If you find more unicode characters that aren't matching, you'll need to map those as well. Here's an example with a few other expressions:

when HTTP_RESPONSE {

STREAM::disable

set encoding_header [HTTP::header value Encoding]

if { $encoding_header contains "text)" } {

if { $encoding_header contains "charset=utf-8" } {

set slash "\u002f"

} else {

set slash "/"

}

set expression "@http:$slash$slash@https:$slash$slash@ "

append expression "@abc.example.com@new.example.com@ "

append expression "@Some other text@Some new text@ "

append expression "@some curse word@polite version@"

STREAM::expression $expression

STREAM::enable

}

}

when STREAM_MATCHED {

log local0. "matching with expression set: $expression"

log local0. "matched: [STREAM::match]"

}

Make sense? Did the other example correctly replace those links in your Sharepoint page?

-George
Chris_Miller
Altostratus
Mar 19, 2013
Sorry, $host should probably be set to example.company.com
AngryCat_52750
Nimbostratus
Mar 19, 2013
i am cleaning up the code now.. give me a minute.. i like the append option..
George_Watkins_
Historic F5 Account
Mar 19, 2013
kulastone,

Make sure you remove those log statements before you put this into production. If the local0 facility is pointing at the local disk you're going to kill your performance by blocking on I/O to log. If you need to log iRules in production, make sure you use the HSL (high speed logging) command to send the logs off box. HSL is UDP syslog and "best effort" therefore it won't block the request from traversing the BIG-IP.

-George
AngryCat_52750
Nimbostratus
Mar 19, 2013
Nothing in the logs from after the update..
AngryCat_52750
Nimbostratus
Mar 19, 2013
Thanks for the heads up on the logging.. this box is kinda dead right now.. only 4 VSs..