HTTP::uri returns full URL

There's an RFE for this, BZ222409. You could open a case with F5 Support and ask them to attach it to the RFE.

For now, you can add logic to your iRule to handle relative and absolute URIs:

http://devcentral.f5.com/Community/GroupDetails/tabid/1082223/asg/50/aft/1178966/showtab/groupforums/Default.aspx1249734

when HTTP_REQUEST {

 Check for an absolute URI
if {not ([HTTP::uri] starts_with "/")}{

if {[scan $abs_uri {%[^/]//%[^/]%s} proto host uri] == 3}{

 Log the URI to a local URI
log local0. "\$proto: $proto, \$host: $host, \$uri: $uri"
}
}
}

Aaron