aFlex to rewrite an IIS respose

[Deleted User] · November 2010

Posted by TODDH

Hi aFlex Wizards.

I have a quick question. When using port translation (80 - 8080) standard port 80 on the frontend to a non-standard port on the backend. IIS responds with a redirect with the port# as part of the redirect which is past through to the client. this ends up as a dead link on the frontend. Is there a way to remove the port number from the host URI on the response?

Sample redirect.
<head><title>Document Moved</title></head>
<body><h1>Object Moved</h1>This document may be found <a HREF="MYLIFE.COM:8080/djp/">here</a></body<MYLIFE.COM:8080/djp/%22%3ehere%3c/a%3e%3c/body> >

Thanks,

-Todd-

[Deleted User] · November 2010

Posted by ddesmidt

Hi,

When browsers receive a redirect, then look at the response header "Location".
That's unusual to see servers sending a redirect with "Location" header + "http content".

Anyway, here is the aFleX to remove the ":8080" in your server redirect response
Have a good day.

Code:

when HTTP_RESPONSE {
# For all the redirects from the servers
if { [HTTP::is_redirect] } {
# Check if the location header contains ":8080"
if {([HTTP::header "Location"] contains ":8080")} {
# Remove ":8080" from the Location header
regsub ":8080" [HTTP::header Location] "" new_location
HTTP::header replace Location $new_location
}
}
}

Dimitri

[Deleted User] · November 2010

Posted by ddesmidt

In the example above, I was removing the ":8080" from the server redirect.
You may have servers with ":8080" and others with ":8081" and ...
Here is a generic aFleX that will remove any port from the redirect:

Code:

when HTTP_RESPONSE {
# For all the redirects from the servers
if { [HTTP::is_redirect] } {
# Check if the location header contains a specific TCP port ":*"
# Note: The location header can be with "http://" or "https://"
# => Looking for ":" is not enough. I have to look for ":" followed by a number
if {[string match {*:[0-9]*} [HTTP::header "Location"]] ==  1} {
# Remove ":*" from the Location header
# Note: Look for ":" + any number up to the fist "/"
regsub {:[0-9].*?/} [HTTP::header Location] "/" new_location
HTTP::header replace Location $new_location
}
}
}

aFlex to rewrite an IIS respose

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