Addition of trailing slash to url

You can use the ends_with operator. If it does not end with a slash, then you can use the builtin "append" operator and then reset the URI with the HTTP::uri command.

when HTTP_REQUEST { 
  set uri [HTTP::uri]
  if { ! ( $uri ends_with "/" ) } {
    append uri "/"
    HTTP::uri $uri
  }
}

You might want to be careful that you don't append slashes to file requests though (ie. http://server/foo.gif).

Generally the webserver has a builtin way to redirect directory based requests that might be more foolproof.

-Joe