Mobile browsers broken - https redirect

The problem was the headers that I was inserting for HSTS. As soon as I removed them, safari started acting normally. Here's the full iRule that includes the header inserts. Very strange behavior, as other mobile browsers handled this just fine:

when RULE_INIT {
   set static::expires [clock scan 20110926]
}
when HTTP_RESPONSE {
   HTTP::header insert "Strict-Transport-Security" "max-age=15552000; includeSubDomains"
}
when HTTP_REQUEST {
    if {([string tolower [HTTP::host]] starts_with "www.")} {
        HTTP::redirect "https://[string range [HTTP::host] 4 end][HTTP::uri]"
        return
    } elseif { [TCP::local_port clientside] == 80 } {
        HTTP::redirect https://[HTTP::host][HTTP::uri]
        return
    }
}