Simple HTTP session termination then back end session to web server

This will probably require a STREAM expression. Enable an empty STREAM profile on the VIP and add this code:

when HTTP_REQUEST {
    STREAM::disable
    HTTP::header remove "Accept-Encoding"
}
when HTTP_RESPONSE {
    if {[HTTP::header value Content-Type] contains "text"}{
        STREAM::expression {@currenturl.olddomain.local@newurl.ourdomain.com:8052@}
        STREAM::enable
    }
}

Thanks Kevin. How do I tie that into the original iRule below?

when HTTP_REQUEST { HTTP::header replace Host "currenturl.olddomain.local" }

This should work:

when HTTP_REQUEST {
    STREAM::disable
    HTTP::header remove "Accept-Encoding"

    if { [TCP::local_port] equals "8052" } {
        if { [HTTP::uri] equals "/" } {
            HTTP::redirect "http://[HTTP::host]/webapp"
        } else {
            HTTP::header replace Host "currenturl.olddomain.local"
      }
    }           
}
when HTTP_RESPONSE {
    if {[HTTP::header value Content-Type] contains "text"}{
        STREAM::expression {@currenturl.olddomain.local@newurl.ourdomain.com:8052@}
        STREAM::enable
    }
}

Looks like still the same result with that in place. Same thing shown by ieHTTPHeaders also. I just used the built in default stream profile which has nothing in it.

As a side note, doesn't look like the if statement for the / and the /webapp is needed. Also, unless the "if" statement to check for 8052 is needed for some following code to execute, we can probably get rid of that as well since all connections coming to this VS will be on 8052 only.

Are you still seeing this in the response?

HTTP/1.1 301 Moved Permanently Content-Type: text/html; charset=UTF-8 Location: http://currenturl.olddomain.local/scan/ Server: Microsoft-IIS/7.5 X-Powered-By: ASP.NET Date: Thu, 17 Oct 2013 15:57:09 GMT Content-Length: 150

You could probably also get rid of the Host header replacement. Not many web servers actually need that.

Yep, same as before:

HTTP/1.1 301 Moved Permanently Content-Type: text/html; charset=UTF-8 Location: http://currenturl.olddomain.local/scan/ Server: Microsoft-IIS/7.5 X-Powered-By: ASP.NET Date: Thu, 17 Oct 2013 18:31:37 GMT Transfer-Encoding: chunked

I need the host header though so F5 creates its connection to the old URL that's still used on the server, right?

Right... The STREAM profile won't catch response headers in the HTTP_RESPONSE event. Since we're just looking for a redirect, try this instead:

when HTTP_RESPONSE {
    if { [HTTP::is_redirect] } {
        HTTP::header replace Location [string map {"currenturl.olddomain.local" "newurl.ourdomain.com:8052"} [HTTP::header Location]]
    }
}

YOU DA MAN!! That did it!

Alright, now for what should be the last bit of trickery...

Like I mentioned, there are four different URIs that can be specified for the URL. They're all working properly with the way the iRule is written now but the name of one of them is undesirable (political thing....). So using the /webapp as an expample, we'd like users to enter /app when entering the new URL (instead of /webapp), but I need the F5 to send that to /webapp when it makes its connection. So, when user enters http://newurl.ourdomain.com:8052/app, the F5 should open its connection to http://currenturl.olddomain.local/webapp. All other /.... should be left alone.

Ahh... you're about to venture into the world of ProxyPass, or if on 11.4, policy rules. Both will perform the translation from external URI patterns to internal URI patterns, and back.

Can we just slip an if/then into the current iRule that says IF the client specifies http://newurl.ourdomain.com:8052/app THEN on the back end make it http://currenturl.olddomain.local/webapp? Then if they specify /anythingelse it will just pass through and only change the host header domain name? Or will things get screwed up because even more pops in after /webapp?

We're on 10.2.1 btw.