iRules + Case Sensitivity

Hi,

 

 

String comparisons in TCL and iRules are case sensitive by default. You can use 'string match -nocase' to perform a case insensitive comparison. For some reason the -nocase option for switch is disabled in iRules, so you can set the string to lower case using 'switch [string tolower $my_var] { test cases }'. I believe the HTTP::header commands are case insensitive, so if the client includes an HTTP request header of User-Agent, it will match a test of 'HTTP::header exists "user-agent"'.

 

 

In general, if you want to be sure about case, you can set the strings you're comparing to lower case using 'string tolower $test_string' when performing the comparison.

 

 

If you want more specific examples, post the rule you're working on and we can help out.

 

 

Aaron