Add auth support for unix socks5 proxy

proxy/proxy.go

@@ -20,7 +20,7 @@ func GetTransport(proxy string) (http.RoundTripper, error) {
 	}
 	if proxyUrl.Host == "unix" && proxyUrl.Scheme == "socks5" &&
 		len(proxyUrl.Path) > 1 /* Path cannot be empty or just / */ {
-		return unixSocks5Proxy(proxyUrl.Path)
+		return unixSocks5Proxy(proxyUrl)
 	}
 	return proxyTcp(proxyUrl)
 }
@@ -38,14 +38,24 @@ func (d *forwardDialer) Dial(network, address string) (net.Conn, error) {
 	//return defaultTransport().Dial(network, address)
 }
 
-func unixSocks5Proxy(path string) (http.RoundTripper, error) {
+func unixSocks5Proxy(proxyUrl *url.URL) (http.RoundTripper, error) {
 	trans := defaultTransport().Clone()
 	if trans.DialContext == nil {
 		panic("DefaultTransport has nil DialContext")
 	}
-	dialer, err := proxy.SOCKS5("unix", path, nil /*auth*/, &forwardDialer{trans.DialContext})
+	var auth *proxy.Auth
+	username := proxyUrl.User.Username()
+	password, _ := proxyUrl.User.Password()
+	// Both username and password should have atleast one char
+	if username != "" && password != "" {
+		auth = &proxy.Auth{
+			User:     username,
+			Password: password,
+		}
+	}
+	dialer, err := proxy.SOCKS5("unix", proxyUrl.Path, auth, &forwardDialer{trans.DialContext})
 	if err != nil {
-		return nil, fmt.Errorf("failed to make socks proxy, path: %s, err: %w", path, err)
+		return nil, fmt.Errorf("failed to make socks proxy, url: %s, err: %w", proxyUrl, err)
 	}
 	ctxDialer, ok := dialer.(proxy.ContextDialer)
 	if !ok {