code: func (u *URI) Parse(host, uri []byte) {
  	u.parse(host, uri, nil)
  }
docs: // Parse initializes URI from the given host and uri.
  //
  // host may be nil. In this case uri must contain fully qualified uri,
  // i.e. with scheme and host. http is assumed if scheme is omitted.
  //
  // uri may contain e.g. RequestURI without scheme and host if host is non-empty.