HTTP Redirect variations?

We are using a HTTP redirect iRule from DC and it has been working for a while but recently we have an application that does not work with this particular iRule and we were wondering we see some irules with "" and some not does this make a difference? Please Advise...

 

 

With ""

 

 

when HTTP_REQUEST {

 

HTTP::redirect "https://[HTTP::host][HTTP::uri]"

 

}

 

 

No ""

 

 

when HTTP_REQUEST {

 

HTTP::redirect https://[HTTP::host][HTTP::uri]

 

}