TCL Trimright help please

Below is a call to my webservers. The Loadbalancer is resetting the connection according to my captures. I have an Irule that is listed below to trim port 80 off the call and then pass the traffic on. It does not seem to be working. I am also no seeing anything in logs that the Irule is failing. Does anyone have any insight on what may be going on with my Irule?

 

 

Here is the HTTP post.

 

 

 

Hypertext Transfer Protocol

 

POST HTTP/1.0\r\n

 

Server: Accipiter XML Library/8.0.Beta2 for Solaris (Ultra/Sparc)\r\n

 

Host: cvcars-xml.adbureau.net:80\r\n

 

Content-Length: 571

 

Content-Type: text/html\r\n

 

\r\n

 

 

 

Here is the Irule that I am using

 

 

when HTTP_REQUEST {

 

set http_host [HTTP::host]

 

if { $http_host ends_with ":80" } {

 

set http_host [string trimright $http_host ":80"]

 

log local0. "HTTP-host-trim is $http_host"

 

}

 

set host_pool [findclass $http_host $::HostPoolMap " "]

 

if { $host_pool ne "" } {

 

pool $host_pool

 

}

 

}