[HTTP::host] includes port

I have written an iRule that checks to make sure the host is a fully qualified domain name prior to processing the rest of the iRules for the virtual server.

 

 

This is the iRule:

 

 

when HTTP_REQUEST {

 

set DEBUG 0

 

 

set host "[HTTP::host]"

 

set port "[TCP::local_port]"

 

if {${port} == 443 } {

 

set protocol "https:"

 

} else {

 

set protocol "http:"

 

}

 

 

if { $DEBUG } {

 

log local0. "host is ${host}"

 

log local0. "port is ${port}"

 

log local0. "protocol is ${protocol}"

 

}

 

 

if { [ string length $host ] == 0 } {

 

set host [IP::local_addr]

 

if { $DEBUG } {

 

log local0. "Setting host to $host"

 

}

 

}

 

 

if { [string first "." ${host}] < 0 && [string length ${host}] >= 1} {

 

set host "[HTTP::host].domain.com

 

if { $DEBUG } {

 

log local0. "Redirect to FQDN - ${host}"

 

}

 

HTTP::redirect "${protocol}//${host}[ HTTP::uri ]"

 

return

 

}

 

}

 

 

This works well except when the port is not 80 or 443. For example, this above iRules returns the following for a request on port 8080

 

 

“Redirect to FQDN – foobar:8080.domain.com/whatever”

 

 

From the DEBUG logs, I see that [HTTP::host] returns both the hostname and the port when the port is not 80 or 443. For example, from log local0. "host is ${host}" returns host is foobar:8080.

 

 

Can anyone help with how I can strip the “port” out of the [HTTP::host] call and then I can re-add the port with

 

set port ""

 

if { [TCP::local_port] != 80 } {

 

set port ":[TCP::local_port]"

 

set host "[HTTP::host]${port}"

 

}

 

after I add the FQDN.

 

 

Thanks