if s != "" {
			uriStr += "?" + s
		}
	}

	// There's apparently a de-facto standard for this.
	// https://web.archive.org/web/20170105004655/http://docstore.mik.ua/orelly/linux/cgi/ch03_02.htm#ch03-35636
	if s := params["HTTPS"]; s == "on" || s == "ON" || s == "1" {
		r.TLS = &tls.ConnectionState{HandshakeComplete: true}
	}

	if r.Host != "" {
		// Hostname is provided, so we can reasonably construct a URL.