server/handler.go

package server

import (
	"log"
	"net"
	"NextConnect/utils"
)

func handleConnection(conn net.Conn) {
	defer conn.Close()
	log.Printf("New connection from %s", conn.RemoteAddr())
	
	// 连接认证
	if !authenticateConnection(conn) {
		log.Printf("Authentication failed for connection from %s", conn.RemoteAddr())
		return
	}
	
	// 读取配置
	config := utils.LoadConfig()
	
	// 根据配置处理不同协议
	switch config.Proxy.ProxyType {
	case "tcp":
		handleTCPConnection(conn)
	case "udp":
		handleUDPConnection(conn)
	case "http":
		handleHTTPConnection(conn)
	case "https":
		handleHTTPSConnection(conn)
	default:
		log.Printf("Unsupported proxy type: %s", config.Proxy.ProxyType)
	}
}

// 简单的连接认证实现
func authenticateConnection(conn net.Conn) bool {
	// 在实际应用中，这里应该实现更复杂的认证机制
	// 比如基于token、证书或用户名密码的认证
	return true
}

func handleTCPConnection(conn net.Conn) {
	log.Println("Handling TCP connection")
	// 实现TCP连接处理逻辑
	buf := make([]byte, 1024)
	for {
		n, err := conn.Read(buf)
		if err != nil {
			log.Printf("Failed to read from TCP connection: %v", err)
			return
		}
		
		// 简单回显逻辑
		_, err = conn.Write(buf[:n])
		if err != nil {
			log.Printf("Failed to write to TCP connection: %v", err)
			return
		}
	}
}

func handleUDPConnection(conn net.Conn) {
	log.Println("Handling UDP connection")
	// 实现UDP连接处理逻辑
}

func handleHTTPConnection(conn net.Conn) {
	log.Println("Handling HTTP connection")
	// 实现HTTP连接处理逻辑
}

func handleHTTPSConnection(conn net.Conn) {
	log.Println("Handling HTTPS connection")
	// 实现HTTPS连接处理逻辑
}