DOC file getting Corrupted after download after Stream Profile Added to the F5 VIP

this code manage absolute to relative URL conversion

when HTTP_REQUEST {
    STREAM::disable
    HTTP::header remove "Accept-Encoding"
    switch [string tolower [HTTP::host]] {
        "test1.com" -
        "test2.com" -
        "test3.com" {
            HTTP::redirect https://www.[HTTP::host][HTTP::uri]
        }
        "www.test1.com" {
            pool test1
            set stream_expresion "@http://www.test1.com/@/@ @http://www.test3.com/@https://www.test3.com/@ @http://www.test2.com/@https://www.test2.com/@"
        }
        "www.test2.com" {
            pool test2
            set stream_expresion "@http://www.test1.com/@https://www.test1.com/@ @http://www.test3.com/@https://www.test3.com/@ @http://www.test2.com/@/@"
        }
        "www.test3.com" {
            pool test3
            set stream_expresion "@http://www.test1.com/@https://www.test1.com/@ @http://www.test3.com/@/@ @http://www.test2.com/@https://www.test2.com/@"
        }
        default {log local0. "No match found for [HTTP::uri]"}
    }

}

when HTTP_RESPONSE {
    if {[HTTP::header value Content-Type] starts_with "text"} {
        STREAM::expression $stream_expression
        STREAM::enable
    }
}