feat: add network mode with combined HTTP and SSE endpoints

- Add new 'network' transport mode that serves both HTTP and SSE endpoints simultaneously
- HTTP endpoint available on specified port (/mcp)
- SSE endpoint available on port+1 (/sse)
- Maintain backward compatibility with stdio, http, sse modes
- Update documentation and examples for new network mode
- Default to network mode for improved user experience

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

operation/operation.go

@@ -42,25 +42,53 @@ func RegisterTool(s *server.MCPServer) {
 func Run() error {
 	mcpServer = newMCPServer(flag.Version)
 	RegisterTool(mcpServer)
+	
 	switch flag.Mode {
 	case "stdio":
 		if err := server.ServeStdio(mcpServer); err != nil {
 			return err
 		}
-	case "sse":
-		sseServer := server.NewSSEServer(mcpServer)
-		log.Infof("Gitea MCP SSE server listening on :%d", flag.Port)
-		if err := sseServer.Start(fmt.Sprintf(":%d", flag.Port)); err != nil {
-			return err
-		}
 	case "http":
 		httpServer := server.NewStreamableHTTPServer(mcpServer)
 		log.Infof("Gitea MCP HTTP server listening on :%d", flag.Port)
 		if err := httpServer.Start(fmt.Sprintf(":%d", flag.Port)); err != nil {
 			return err
 		}
+	case "sse":
+		sseServer := server.NewSSEServer(mcpServer)
+		log.Infof("Gitea MCP SSE server listening on :%d", flag.Port)
+		if err := sseServer.Start(fmt.Sprintf(":%d", flag.Port)); err != nil {
+			return err
+		}
+	case "network":
+		// Network mode: start both HTTP and SSE servers concurrently
+		log.Infof("Starting Gitea MCP server in network mode")
+		
+		errChan := make(chan error, 2)
+		
+		// Start HTTP server on port
+		go func() {
+			httpServer := server.NewStreamableHTTPServer(mcpServer)
+			log.Infof("Gitea MCP HTTP server listening on :%d", flag.Port)
+			if err := httpServer.Start(fmt.Sprintf(":%d", flag.Port)); err != nil {
+				errChan <- fmt.Errorf("HTTP server error: %w", err)
+			}
+		}()
+		
+		// Start SSE server on port+1
+		go func() {
+			sseServer := server.NewSSEServer(mcpServer)
+			ssePort := flag.Port + 1
+			log.Infof("Gitea MCP SSE server listening on :%d", ssePort)
+			if err := sseServer.Start(fmt.Sprintf(":%d", ssePort)); err != nil {
+				errChan <- fmt.Errorf("SSE server error: %w", err)
+			}
+		}()
+		
+		// Wait for first error
+		return <-errChan
 	default:
-		return fmt.Errorf("invalid transport type: %s. Must be 'stdio', 'sse' or 'http'", flag.Mode)
+		return fmt.Errorf("invalid transport type: %s. Must be 'stdio', 'http', 'sse' or 'network'", flag.Mode)
 	}
 	return nil
 }