Handle registers the handler with the given pattern in the DefaultServeMux. The documentation for ServeMux explains how patterns are matched.

HandleFailed returns a HandlerFunc that returns SERVFAIL for every request it gets. Deprecated: This function is going away.

Header returns itself. This is here to make RR_Header implements the RR interface.

Header return the RR header of r.

Hijack implements the ResponseWriter.Hijack method.

IsMsg sanity checks buf and returns an error if it isn't a valid DNS packet. The checking is performed on the binary payload.