I've seen different samples for matching file types:
class-map type http loadbalance match-any regex_test
2 match http url .*jpg
3 match http url .*\.jpg
4 match http url .+\.[Jj][Pp][Gg]
Are all of the above correct (for matching .jpg)? If yes, would the .+\.[Jj][Pp][Gg] be better since it matches both upper and lower case?