Inspect URI without Case Senstivity?

I prefer the switch statement myself (or a data group in combination with the matchclass command if you have a lot more strings to match.

Here's how the switch statement would look:

when HTTP_REQUEST {
  switch -glob [string tolower [HTTP::uri]] {
    "/_xml/ors/status.asp*" -
    "/_xml/vendor/status.asp*" -
    "_xml/client/status.asp*" {
      POOL mypool_B2B_SSL
    }
    default {
      pool mypool.com_SSL
    }
  }
}

The -glob makes the switch perform like unix file globbing (wildcarding). This is much less expensive CPU-wise than a regular expresion check and gives you the flexibility to use wildcards in your comparisons. Note that I put a "*" at the end of the strings making it equivalent to a "starts_with" comparison.

-Joe