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Forum Discussion

Nams_119859's avatar
Nams_119859
Icon for Nimbostratus rankNimbostratus
Apr 11, 2013

url check starts_with number to avoid looping

  Hello, Below is my iRule that redirects an incoming url to a versioned url, by using the verison number in the header. In order to avoid infinite looping I am looking for a way to check "uri...
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Kevin_Stewart's avatar
Kevin_Stewart
Icon for Employee rankEmployee
Apr 12, 2013
The not operator is definitely supported in 9.x and above - it's a native construct of the TCL language.

I'd try something like this instead: 


when HTTP_REQUEST {
     if { ( [HTTP::header exists Version] ) and not ( [HTTP::uri] starts_with "/[HTTP::header Version]" ) } {
          HTTP::respond 302 Location "http://[HTTP::host]/[HTTP::header Version][HTTP::uri]"
     }
}

Your if conditional should start with the exists clause before trying to look for its value.