}

	if remoteIP, remotePort, err := net.SplitHostPort(req.RemoteAddr); err == nil {
		env = append(env, "REMOTE_ADDR="+remoteIP, "REMOTE_HOST="+remoteIP, "REMOTE_PORT="+remotePort)
	} else {
		// could not parse ip:port, let's use whole RemoteAddr and leave REMOTE_PORT undefined
		env = append(env, "REMOTE_ADDR="+req.RemoteAddr, "REMOTE_HOST="+req.RemoteAddr)
	}

	if hostDomain, _, err := net.SplitHostPort(req.Host); err == nil {

		}
		r.URL = url
	}

	// Request.RemoteAddr has its port set by Go's standard http
	// server, so we do here too.
	remotePort, _ := strconv.Atoi(params["REMOTE_PORT"]) // zero if unset or invalid
	r.RemoteAddr = net.JoinHostPort(params["REMOTE_ADDR"], strconv.Itoa(remotePort))

	return r, nil
}

// Serve executes the provided [Handler] on the currently active CGI

		"env-HTTP_HOST":         "example.com",
		"env-PATH_INFO":         "",
		"env-QUERY_STRING":      "foo=bar&a=b",
		"env-REMOTE_ADDR":       "1.2.3.4",
		"env-REMOTE_HOST":       "1.2.3.4",
		"env-REMOTE_PORT":       "1234",
		"env-REQUEST_METHOD":    "GET",
		"env-REQUEST_URI":       "/test.go?foo=bar&a=b",
		"env-SCRIPT_FILENAME":   os.Args[0],
		"env-SCRIPT_NAME":       "/test.go",
		"env-SERVER_NAME":       "example.com",

		"HTTP_USER_AGENT": "goclient",
		"HTTP_FOO_BAR":    "baz",
		"REQUEST_URI":     "/path?a=b",
		"CONTENT_LENGTH":  "123",
		"CONTENT_TYPE":    "text/xml",
		"REMOTE_ADDR":     "5.6.7.8",
		"REMOTE_PORT":     "54321",
	}
	req, err := RequestFromMap(env)
	if err != nil {
		t.Fatalf("RequestFromMap: %v", err)
	}
	if g, e := req.UserAgent(), "goclient"; e != g {
		t.Errorf("expected UserAgent %q; got %q", e, g)
	}

		"env-HTTP_HOST":         "example.com:80",
		"env-PATH_INFO":         "",
		"env-QUERY_STRING":      "foo=bar&a=b",
		"env-REMOTE_ADDR":       "1.2.3.4",
		"env-REMOTE_HOST":       "1.2.3.4",
		"env-REMOTE_PORT":       "1234",
		"env-REQUEST_METHOD":    "GET",
		"env-REQUEST_URI":       "/test.cgi?foo=bar&a=b",
		"env-SCRIPT_FILENAME":   os.Args[0],
		"env-SCRIPT_NAME":       "/test.cgi",

func addFastCGIEnvToContext(s string) bool {
	// Exclude things supported by net/http natively:
	switch s {
	case "CONTENT_LENGTH", "CONTENT_TYPE", "HTTPS",
		"PATH_INFO", "QUERY_STRING", "REMOTE_ADDR",
		"REMOTE_HOST", "REMOTE_PORT", "REQUEST_METHOD",
		"REQUEST_URI", "SCRIPT_NAME", "SERVER_PROTOCOL":
		return false
	}
	if strings.HasPrefix(s, "HTTP_") {
		return false
	}
	// Explicitly include FastCGI-specific things.