wormhole-client/internal/client/client.go

package client

import (
	"bufio"
	"context"
	"encoding/json"
	"fmt"
	"io"
	"net"
	"net/http"
	"os"
	"os/signal"
	"syscall"
	"time"

	"github.com/azoic/wormhole-client/internal/config"
	"github.com/azoic/wormhole-client/internal/gui"
	"github.com/azoic/wormhole-client/internal/proxy"
	"github.com/azoic/wormhole-client/internal/routing"
	"github.com/azoic/wormhole-client/internal/system"
	"github.com/azoic/wormhole-client/pkg/dns"
	"github.com/azoic/wormhole-client/pkg/logger"
)

type Client struct {
	mode           string
	config         *config.Config
	socks5Proxy    *proxy.SOCKS5Proxy
	dnsProxy       *dns.DNSProxy
	systemProxyMgr *system.SystemProxyManager
	routeMatcher   *routing.RouteMatcher
	guiServer      *gui.GUIServer
	httpServer     *http.Server
	ctx            context.Context
	cancel         context.CancelFunc
}

func NewClient(mode string) *Client {
	ctx, cancel := context.WithCancel(context.Background())
	return &Client{
		mode:           mode,
		systemProxyMgr: system.NewSystemProxyManager(),
		ctx:            ctx,
		cancel:         cancel,
	}
}

func (c *Client) Start(configPath string) error {
	// 加载配置
	cfg, err := config.LoadConfig(configPath)
	if err != nil {
		return fmt.Errorf("failed to load config: %v", err)
	}

	if err := cfg.Validate(); err != nil {
		return fmt.Errorf("invalid config: %v", err)
	}

	c.config = cfg

	// 设置日志级别
	logger.SetLevel(cfg.LogLevel)

	logger.Info("🚀 Starting Wormhole SOCKS5 Client")
	logger.Info("📄 Config loaded from: %s", configPath)
	logger.Info("🔧 Mode: %s", c.mode)
	logger.Info("🎯 SOCKS5 Server: %s", cfg.GetServerAddr())

	// 创建SOCKS5代理客户端
	c.socks5Proxy = proxy.NewSOCKS5Proxy(
		cfg.GetServerAddr(),
		cfg.Server.Username,
		cfg.Server.Password,
		cfg.Timeout,
	)

	// 初始化路由匹配器（如果有路由配置）
	if c.mode == "global" && len(cfg.GlobalProxy.Routing.BypassDomains) > 0 || len(cfg.GlobalProxy.Routing.ForceDomains) > 0 {
		c.routeMatcher, err = routing.NewRouteMatcher(&cfg.GlobalProxy.Routing)
		if err != nil {
			logger.Warn("Failed to initialize route matcher: %v", err)
		} else {
			logger.Info("🛣️  Route matcher initialized")
		}
	}

	// 创建 GUI 服务器
	c.guiServer = gui.NewGUIServer(cfg, c.socks5Proxy, c.systemProxyMgr, c.routeMatcher, c.mode)

	// 设置信号处理
	c.setupSignalHandler()

	switch c.mode {
	case "http":
		return c.startHTTPProxy()
	case "global":
		return c.startGlobalProxy()
	case "transparent":
		return c.startTransparentProxy()
	default:
		return fmt.Errorf("unsupported mode: %s", c.mode)
	}
}

func (c *Client) startHTTPProxy() error {
	logger.Info("🌐 Starting HTTP proxy mode...")
	logger.Info("💡 Setting up HTTP proxy on port %d", c.config.Proxy.LocalPort)

	c.httpServer = c.createHTTPServerWithGUI(c.config.Proxy.LocalPort)

	logger.Info("✅ HTTP proxy started on :%d", c.config.Proxy.LocalPort)
	logger.Info("💡 Configure your browser to use HTTP proxy: 127.0.0.1:%d", c.config.Proxy.LocalPort)
	logger.Info("📊 Statistics available at: http://127.0.0.1:%d/stats", c.config.Proxy.LocalPort)
	logger.Info("💚 Health check available at: http://127.0.0.1:%d/health", c.config.Proxy.LocalPort)
	logger.Info("🖥️  Web GUI available at: http://127.0.0.1:%d/gui", c.config.Proxy.LocalPort)

	return c.httpServer.ListenAndServe()
}

func (c *Client) startGlobalProxy() error {
	logger.Info("🌍 Starting global proxy mode...")
	logger.Info("💡 This will configure system-wide proxy settings")
	logger.Info("⚠️  Requires administrator privileges")

	// 启动HTTP代理服务器
	c.httpServer = c.createHTTPServerWithGUI(c.config.Proxy.LocalPort)

	errChan := make(chan error, 1)
	go func() {
		if err := c.httpServer.ListenAndServe(); err != nil && err != http.ErrServerClosed {
			errChan <- fmt.Errorf("HTTP proxy server failed: %v", err)
		}
	}()

	// 等待服务器启动
	time.Sleep(500 * time.Millisecond)

	// 设置系统代理
	httpProxy := fmt.Sprintf("127.0.0.1:%d", c.config.Proxy.LocalPort)
	httpsProxy := httpProxy

	logger.Info("📡 Setting system proxy to %s", httpProxy)
	if err := c.systemProxyMgr.SetGlobalProxy(httpProxy, httpsProxy, ""); err != nil {
		logger.Error("Failed to set system proxy: %v", err)
		logger.Warn("💡 You may need to run with administrator privileges")
		logger.Info("📋 Manual setup instructions:")
		logger.Info("   - Set HTTP proxy to: %s", httpProxy)
		logger.Info("   - Set HTTPS proxy to: %s", httpsProxy)
	} else {
		logger.Info("✅ System proxy configured successfully")
	}

	// 启动DNS代理（如果启用）
	if c.config.GlobalProxy.DNSProxy {
		logger.Info("🔍 Starting DNS proxy on port %d", c.config.GlobalProxy.DNSPort)

		// 创建DNS代理（通过SOCKS5转发DNS查询）
		c.dnsProxy = dns.NewDNSProxy("8.8.8.8:53", c.config.GlobalProxy.DNSPort)
		if err := c.dnsProxy.Start(); err != nil {
			logger.Warn("Failed to start DNS proxy: %v", err)
		} else {
			logger.Info("✅ DNS proxy started")
			logger.Info("💡 Configure your system DNS to: 127.0.0.1:%d", c.config.GlobalProxy.DNSPort)
		}
	}

	// 显示路由配置信息
	if c.routeMatcher != nil {
		stats := c.routeMatcher.GetStats()
		logger.Info("🛣️  Routing configuration:")
		logger.Info("   - Bypass domains: %v", stats["bypass_domains_count"])
		logger.Info("   - Force domains: %v", stats["force_domains_count"])
		logger.Info("   - Bypass local: %v", stats["bypass_local"])
		logger.Info("   - Bypass private: %v", stats["bypass_private"])
	}

	logger.Info("🎉 Global proxy mode started successfully")
	logger.Info("📍 HTTP/HTTPS Proxy: %s", httpProxy)
	if c.dnsProxy != nil {
		logger.Info("📍 DNS Proxy: 127.0.0.1:%d", c.config.GlobalProxy.DNSPort)
	}
	logger.Info("📊 Statistics: http://%s/stats", httpProxy)
	logger.Info("💚 Health check: http://%s/health", httpProxy)
	logger.Info("🖥️  Web GUI: http://%s/gui", httpProxy)
	logger.Info("🛑 Press Ctrl+C to stop")

	// 检查是否有错误
	select {
	case err := <-errChan:
		return err
	case <-c.ctx.Done():
		return nil
	}
}

func (c *Client) startTransparentProxy() error {
	logger.Info("🔍 Starting transparent proxy mode...")
	logger.Info("💡 This will intercept network traffic transparently")
	logger.Info("⚠️  Requires root privileges and iptables support")

	// TODO: 实现透明代理
	logger.Error("❌ Transparent proxy mode is not yet implemented")
	logger.Info("💡 Available alternatives:")
	logger.Info("   - Use global mode: ./bin/wormhole-client -mode global")
	logger.Info("   - Use HTTP mode: ./bin/wormhole-client -mode http")

	return fmt.Errorf("transparent proxy mode not implemented")
}

// createHTTPServerWithGUI 创建带有 GUI 的 HTTP 服务器
func (c *Client) createHTTPServerWithGUI(localPort int) *http.Server {
	// 创建ServeMux来处理不同的路径
	mux := http.NewServeMux()

	// 代理处理器
	proxyHandler := &httpProxyHandler{
		socks5Proxy:  c.socks5Proxy,
		routeMatcher: c.routeMatcher,
	}

	// API 路由
	mux.HandleFunc("/stats", func(w http.ResponseWriter, r *http.Request) {
		if r.Method != http.MethodGet {
			http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
			return
		}

		stats := c.socks5Proxy.GetStats()
		w.Header().Set("Content-Type", "application/json")
		w.Header().Set("Access-Control-Allow-Origin", "*")

		if err := json.NewEncoder(w).Encode(stats); err != nil {
			logger.Error("Failed to encode stats: %v", err)
			http.Error(w, "Internal Server Error", http.StatusInternalServerError)
			return
		}
	})

	mux.HandleFunc("/health", func(w http.ResponseWriter, r *http.Request) {
		if r.Method != http.MethodGet {
			http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
			return
		}

		stats := c.socks5Proxy.GetStats()
		health := map[string]interface{}{
			"status":             "healthy",
			"uptime":             stats.Uptime.String(),
			"active_connections": stats.ActiveConnections,
			"success_rate":       stats.GetSuccessRate(),
		}

		w.Header().Set("Content-Type", "application/json")
		if err := json.NewEncoder(w).Encode(health); err != nil {
			logger.Error("Failed to encode health: %v", err)
			http.Error(w, "Internal Server Error", http.StatusInternalServerError)
			return
		}
	})

	// GUI 路由
	if c.guiServer != nil {
		c.guiServer.RegisterRoutes(mux)
	}

	// 创建一个包装器来处理CONNECT请求
	handler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		// 对于CONNECT请求，直接使用代理处理器
		if r.Method == http.MethodConnect {
			proxyHandler.ServeHTTP(w, r)
			return
		}

		// 对于其他请求，使用ServeMux
		mux.ServeHTTP(w, r)
	})

	server := &http.Server{
		Addr:           fmt.Sprintf(":%d", localPort),
		Handler:        handler,
		ReadTimeout:    30 * time.Second,
		WriteTimeout:   30 * time.Second,
		IdleTimeout:    120 * time.Second,
		MaxHeaderBytes: 1 << 20, // 1MB
	}

	return server
}

// httpProxyHandler HTTP代理处理器
type httpProxyHandler struct {
	socks5Proxy  *proxy.SOCKS5Proxy
	routeMatcher *routing.RouteMatcher
}

func (h *httpProxyHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
	// 添加调试日志
	logger.Info("Received request: Method=%s, URL.Path=%s, Host=%s", r.Method, r.URL.Path, r.Host)

	// 只对非CONNECT请求检查API和GUI路径
	if r.Method != http.MethodConnect && isAPIOrGUIPath(r.URL.Path) {
		logger.Info("Request blocked by isAPIOrGUIPath: %s", r.URL.Path)
		http.NotFound(w, r)
		return
	}

	// 统计连接 - 增加连接计数
	h.socks5Proxy.IncrementConnections()

	// 使用defer确保在请求结束时减少活跃连接数
	defer h.socks5Proxy.DecrementActiveConnections()

	// 调用代理处理逻辑
	h.handleProxyRequest(w, r)
}

// handleProxyRequest 处理代理请求
func (h *httpProxyHandler) handleProxyRequest(w http.ResponseWriter, r *http.Request) {
	if r.Method == http.MethodConnect {
		h.handleHTTPSProxy(w, r)
	} else {
		h.handleHTTPProxy(w, r)
	}
}

// handleHTTPSProxy 处理HTTPS代理请求 (CONNECT方法)
func (h *httpProxyHandler) handleHTTPSProxy(w http.ResponseWriter, r *http.Request) {
	// 解析目标主机
	host, port, err := net.SplitHostPort(r.Host)
	if err != nil {
		// 如果没有端口，默认使用443
		host = r.Host
		port = "443"
	}

	// 使用路由匹配器判断是否需要代理
	if h.routeMatcher != nil {
		matchResult := h.routeMatcher.Match(host)

		switch matchResult {
		case routing.MatchBypass:
			// 直连
			logger.Debug("HTTPS %s: Direct connection (bypass)", host)
			h.handleDirectHTTPSProxy(w, r, host, port)
			return
		case routing.MatchProxy:
			// 强制代理
			logger.Debug("HTTPS %s: Using SOCKS5 proxy (force)", host)
		case routing.MatchAuto:
			// 自动决定，默认使用代理
			logger.Debug("HTTPS %s: Using SOCKS5 proxy (auto)", host)
		}
	}

	// 通过SOCKS5代理连接
	targetHost := net.JoinHostPort(host, port)
	destConn, err := h.socks5Proxy.DialTCP(targetHost)
	if err != nil {
		logger.Error("Failed to connect via SOCKS5 to %s: %v", targetHost, err)
		h.socks5Proxy.IncrementFailedRequests()
		http.Error(w, "Bad Gateway", http.StatusBadGateway)
		return
	}
	defer destConn.Close()

	// 发送200 Connection established响应
	w.WriteHeader(http.StatusOK)

	hijacker, ok := w.(http.Hijacker)
	if !ok {
		logger.Error("Hijacking not supported")
		h.socks5Proxy.IncrementFailedRequests()
		http.Error(w, "Internal Server Error", http.StatusInternalServerError)
		return
	}

	clientConn, _, err := hijacker.Hijack()
	if err != nil {
		logger.Error("Failed to hijack connection: %v", err)
		h.socks5Proxy.IncrementFailedRequests()
		return
	}
	defer clientConn.Close()

	// 记录成功建立连接
	h.socks5Proxy.IncrementSuccessfulRequests()

	// 双向数据转发
	go func() {
		defer destConn.Close()
		defer clientConn.Close()
		written, err := io.Copy(destConn, clientConn)
		if err == nil && written > 0 {
			h.socks5Proxy.AddBytesTransferred(written, 0)
		}
	}()

	written, err := io.Copy(clientConn, destConn)
	if err == nil && written > 0 {
		h.socks5Proxy.AddBytesTransferred(0, written)
	}
}

// handleDirectHTTPSProxy 直接连接处理HTTPS代理
func (h *httpProxyHandler) handleDirectHTTPSProxy(w http.ResponseWriter, r *http.Request, host, port string) {
	// 直接连接到目标服务器
	targetAddr := net.JoinHostPort(host, port)
	destConn, err := net.DialTimeout("tcp", targetAddr, 10*time.Second)
	if err != nil {
		logger.Error("Failed to connect directly to %s: %v", targetAddr, err)
		h.socks5Proxy.IncrementFailedRequests()
		http.Error(w, "Bad Gateway", http.StatusBadGateway)
		return
	}
	defer destConn.Close()

	// 发送200 Connection established响应
	w.WriteHeader(http.StatusOK)

	hijacker, ok := w.(http.Hijacker)
	if !ok {
		logger.Error("Hijacking not supported")
		h.socks5Proxy.IncrementFailedRequests()
		http.Error(w, "Internal Server Error", http.StatusInternalServerError)
		return
	}

	clientConn, _, err := hijacker.Hijack()
	if err != nil {
		logger.Error("Failed to hijack connection: %v", err)
		h.socks5Proxy.IncrementFailedRequests()
		return
	}
	defer clientConn.Close()

	// 记录成功建立连接
	h.socks5Proxy.IncrementSuccessfulRequests()

	// 双向数据转发
	go func() {
		defer destConn.Close()
		defer clientConn.Close()
		written, err := io.Copy(destConn, clientConn)
		if err == nil && written > 0 {
			h.socks5Proxy.AddBytesTransferred(written, 0)
		}
	}()

	written, err := io.Copy(clientConn, destConn)
	if err == nil && written > 0 {
		h.socks5Proxy.AddBytesTransferred(0, written)
	}
}

// handleHTTPProxy 处理HTTP代理请求
func (h *httpProxyHandler) handleHTTPProxy(w http.ResponseWriter, r *http.Request) {
	logger.Info("Processing HTTP proxy request: %s %s", r.Method, r.URL.String())

	// 确保URL包含Host
	if r.URL.Host == "" {
		r.URL.Host = r.Host
	}
	if r.URL.Scheme == "" {
		r.URL.Scheme = "http"
	}

	// 解析目标主机
	host, port, err := net.SplitHostPort(r.Host)
	if err != nil {
		// 如果没有端口，根据协议添加默认端口
		host = r.Host
		if r.URL.Scheme == "https" {
			port = "443"
		} else {
			port = "80"
		}
	}

	logger.Info("Target host: %s, port: %s", host, port)

	// 使用路由匹配器判断是否需要代理
	if h.routeMatcher != nil {
		matchResult := h.routeMatcher.Match(host)

		switch matchResult {
		case routing.MatchBypass:
			// 直连
			logger.Debug("HTTP %s: Direct connection (bypass)", host)
			h.handleDirectHTTPProxy(w, r)
			return
		case routing.MatchProxy:
			// 强制代理
			logger.Debug("HTTP %s: Using SOCKS5 proxy (force)", host)
		case routing.MatchAuto:
			// 自动决定，默认使用代理
			logger.Debug("HTTP %s: Using SOCKS5 proxy (auto)", host)
		}
	}

	// 通过SOCKS5代理连接
	targetHost := net.JoinHostPort(host, port)
	destConn, err := h.socks5Proxy.DialTCP(targetHost)
	if err != nil {
		logger.Error("Failed to connect via SOCKS5 to %s: %v", targetHost, err)
		h.socks5Proxy.IncrementFailedRequests()
		http.Error(w, "Bad Gateway", http.StatusBadGateway)
		return
	}
	defer destConn.Close()

	// 创建新的请求用于转发到目标服务器
	// 需要将代理格式的URL转换为相对路径格式
	requestURL := r.URL.Path
	if r.URL.RawQuery != "" {
		requestURL += "?" + r.URL.RawQuery
	}
	if requestURL == "" {
		requestURL = "/"
	}

	logger.Info("Original URL: %s, Converted URL: %s", r.URL.String(), requestURL)

	newReq, err := http.NewRequest(r.Method, requestURL, r.Body)
	if err != nil {
		logger.Error("Failed to create request for SOCKS5 proxy: %v", err)
		h.socks5Proxy.IncrementFailedRequests()
		http.Error(w, "Bad Request", http.StatusBadRequest)
		return
	}

	// 复制请求头，但需要调整Host头
	for key, values := range r.Header {
		if key == "Host" {
			continue // 跳过Host头，使用目标服务器的Host
		}
		for _, value := range values {
			newReq.Header.Add(key, value)
		}
	}

	// 设置正确的Host头
	newReq.Host = r.Host
	newReq.Header.Set("Host", r.Host)

	// 发送HTTP请求
	if err := newReq.Write(destConn); err != nil {
		logger.Error("Failed to write request to SOCKS5 connection: %v", err)
		h.socks5Proxy.IncrementFailedRequests()
		http.Error(w, "Bad Gateway", http.StatusBadGateway)
		return
	}

	// 读取并转发响应
	resp, err := http.ReadResponse(bufio.NewReader(destConn), newReq)
	if err != nil {
		logger.Error("Failed to read response from SOCKS5 connection: %v", err)
		h.socks5Proxy.IncrementFailedRequests()
		http.Error(w, "Bad Gateway", http.StatusBadGateway)
		return
	}
	defer resp.Body.Close()

	// 记录成功请求
	h.socks5Proxy.IncrementSuccessfulRequests()

	// 复制响应头
	for key, values := range resp.Header {
		for _, value := range values {
			w.Header().Add(key, value)
		}
	}

	// 设置状态码
	w.WriteHeader(resp.StatusCode)

	// 复制响应体并统计字节数
	written, err := io.Copy(w, resp.Body)
	if err == nil && written > 0 {
		h.socks5Proxy.AddBytesTransferred(0, written)
	}
}

// handleDirectHTTPProxy 直接连接处理HTTP代理
func (h *httpProxyHandler) handleDirectHTTPProxy(w http.ResponseWriter, r *http.Request) {
	// 创建直接连接的HTTP客户端
	client := &http.Client{
		Timeout: 30 * time.Second,
		Transport: &http.Transport{
			DialContext: (&net.Dialer{
				Timeout:   10 * time.Second,
				KeepAlive: 30 * time.Second,
			}).DialContext,
		},
	}

	// 创建新的请求
	newReq, err := http.NewRequest(r.Method, r.URL.String(), r.Body)
	if err != nil {
		logger.Error("Failed to create direct request: %v", err)
		http.Error(w, "Bad Request", http.StatusBadRequest)
		return
	}

	// 复制请求头
	for key, values := range r.Header {
		for _, value := range values {
			newReq.Header.Add(key, value)
		}
	}

	// 发送请求
	resp, err := client.Do(newReq)
	if err != nil {
		logger.Error("Failed to make direct request: %v", err)
		http.Error(w, "Bad Gateway", http.StatusBadGateway)
		return
	}
	defer resp.Body.Close()

	// 复制响应头
	for key, values := range resp.Header {
		for _, value := range values {
			w.Header().Add(key, value)
		}
	}

	// 设置状态码
	w.WriteHeader(resp.StatusCode)

	// 复制响应体
	if _, err := io.Copy(w, resp.Body); err != nil {
		logger.Error("Failed to copy response body: %v", err)
		return
	}
}

// isAPIOrGUIPath 检查是否为API或GUI路径
func isAPIOrGUIPath(path string) bool {
	apiPaths := []string{"/stats", "/health", "/api/", "/gui", "/static/"}

	for _, apiPath := range apiPaths {
		if path == apiPath || (apiPath[len(apiPath)-1] == '/' && len(path) > len(apiPath) && path[:len(apiPath)] == apiPath) {
			return true
		}
	}

	return false
}

func (c *Client) setupSignalHandler() {
	sigChan := make(chan os.Signal, 1)
	signal.Notify(sigChan, os.Interrupt, syscall.SIGTERM)

	go func() {
		<-sigChan
		logger.Info("🛑 Received shutdown signal...")
		c.shutdown()
	}()
}

func (c *Client) shutdown() {
	logger.Info("🔄 Shutting down gracefully...")

	// 停止HTTP服务器
	if c.httpServer != nil {
		ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
		defer cancel()

		if err := c.httpServer.Shutdown(ctx); err != nil {
			logger.Error("Failed to shutdown HTTP server gracefully: %v", err)
		} else {
			logger.Info("✅ HTTP server stopped")
		}
	}

	// 恢复系统代理设置
	if c.systemProxyMgr != nil && c.systemProxyMgr.IsEnabled() {
		logger.Info("🔄 Restoring system proxy settings...")
		if err := c.systemProxyMgr.RestoreProxy(); err != nil {
			logger.Error("Failed to restore system proxy: %v", err)
		}
	}

	// 停止DNS代理
	if c.dnsProxy != nil {
		logger.Info("🔄 Stopping DNS proxy...")
		if err := c.dnsProxy.Stop(); err != nil {
			logger.Error("Failed to stop DNS proxy: %v", err)
		} else {
			logger.Info("✅ DNS proxy stopped")
		}
	}

	// 显示统计信息
	if c.socks5Proxy != nil {
		stats := c.socks5Proxy.GetStats()
		logger.Info("📊 Final statistics:")
		logger.Info("   - Total connections: %d", stats.TotalConnections)
		logger.Info("   - Successful requests: %d", stats.SuccessfulRequests)
		logger.Info("   - Failed requests: %d", stats.FailedRequests)
		logger.Info("   - Success rate: %.2f%%", stats.GetSuccessRate())
		logger.Info("   - Total bytes: %d", stats.GetTotalBytes())
		logger.Info("   - Uptime: %v", stats.Uptime)
	}

	logger.Info("✅ Cleanup completed")

	// 取消上下文
	c.cancel()

	// 给一点时间让goroutines优雅退出
	time.Sleep(100 * time.Millisecond)
	os.Exit(0)
}

// GetStats 获取客户端统计信息
func (c *Client) GetStats() map[string]interface{} {
	stats := make(map[string]interface{})

	if c.socks5Proxy != nil {
		proxyStats := c.socks5Proxy.GetStats()
		stats["proxy"] = proxyStats
	}

	if c.systemProxyMgr != nil {
		stats["system_proxy_enabled"] = c.systemProxyMgr.IsEnabled()
		if currentProxy, err := c.systemProxyMgr.GetCurrentProxy(); err == nil {
			stats["current_system_proxy"] = currentProxy
		}
	}

	if c.routeMatcher != nil {
		stats["routing"] = c.routeMatcher.GetStats()
	}

	stats["mode"] = c.mode
	stats["config_file"] = c.config

	return stats
}