Function BuildHTTPTransport

sdk/proxyutil/proxy.go:89–125

BuildHTTPTransport constructs an HTTP transport for the provided proxy setting.

(raw string)

// BuildHTTPTransport constructs an HTTP transport for the provided proxy setting.
func BuildHTTPTransport(raw string) (*http.Transport, Mode, error) {
	setting, errParse := Parse(raw)
	if errParse != nil {
		return nil, setting.Mode, errParse
	}

	switch setting.Mode {
	case ModeInherit:
		return nil, setting.Mode, nil
	case ModeDirect:
		return NewDirectTransport(), setting.Mode, nil
	case ModeProxy:
		if setting.URL.Scheme == "socks5" || setting.URL.Scheme == "socks5h" {
			var proxyAuth *proxy.Auth
			if setting.URL.User != nil {
				username := setting.URL.User.Username()
				password, _ := setting.URL.User.Password()
				proxyAuth = &proxy.Auth{User: username, Password: password}
			}
			dialer, errSOCKS5 := proxy.SOCKS5("tcp", setting.URL.Host, proxyAuth, proxy.Direct)
			if errSOCKS5 != nil {
				return nil, setting.Mode, fmt.Errorf("create SOCKS5 dialer failed: %w", errSOCKS5)
			}
			transport := cloneDefaultTransport()
			transport.Proxy = nil
			transport.DialContext = func(_ context.Context, network, addr string) (net.Conn, error) {
				return dialer.Dial(network, addr)
			}
			return transport, setting.Mode, nil
		}
		transport := cloneDefaultTransport()
		transport.Proxy = http.ProxyURL(setting.URL)
		return transport, setting.Mode, nil
	default:
		return nil, setting.Mode, nil
	}
}

// BuildDialer constructs a proxy dialer for settings that operate at the connection layer.
func BuildDialer(raw string) (proxy.Dialer, Mode, error) {