bl/common/socket/ServerEvent.go

package socket

import (
	"context"
	"encoding/binary"
	"errors"
	"io"
	"log"
	"os"
	"sync/atomic"
	"time"

	"blazing/cool"
	"blazing/logic/service/common"
	"blazing/logic/service/player"
	"blazing/modules/config/service"

	"github.com/gogf/gf/v2/frame/g"
	"github.com/gogf/gf/v2/os/gtime"
	"github.com/panjf2000/gnet/v2"
)

func (s *Server) Boot(serverid, port uint16) error {
	//	go s.bootws()
	s.serverid = serverid
	s.port = port

	err := gnet.Run(s, s.network+"://"+s.addr,
		gnet.WithMulticore(true),
		gnet.WithTicker(true),

		// 其他调优配置↓
		gnet.WithTCPNoDelay(gnet.TCPNoDelay), // 禁用Nagle算法（降低延迟，适合小数据包场景）
		//gnet.WithReusePort(true),             // 开启SO_REUSEPORT（多核下提升并发）
		//gnet.WithReadBufferCap(1024*64),      // 读缓冲区64KB（根据业务调整，默认太小）
		//	gnet.WithWriteBufferCap(1024*64),     // 写缓冲区64KB

		//gnet.WithLockOSThread(true), // 绑定goroutine到OS线程（减少上下文切换）
	)
	if err != nil {
		panic(err)
	}

	return nil
}

func (s *Server) Stop() error {
	_ = s.eng.Stop(context.Background())
	s.workerPool.Release()

	return nil
}

func (s *Server) OnClose(c gnet.Conn, err error) (action gnet.Action) {
	defer func() {
		if err := recover(); err != nil { // 恢复 panic，err 为 panic 错误值
			// 1. 打印错误信息
			if t, ok := c.Context().(*player.ClientData); ok {
				if t.Player != nil {
					if t.Player.Info != nil {
						cool.Logger.Error(context.TODO(), "OnClose 错误：", cool.Config.ServerInfo.OnlineID, t.Player.Info.UserID, err)
						t.Player.Service.Info.Save(*t.Player.Info)
					}

				}

			} else {
				cool.Logger.Error(context.TODO(), "OnClose 错误：", cool.Config.ServerInfo.OnlineID, err)

			}

		}
	}()
	// 识别 RST 导致的连接中断（错误信息含 "connection reset"）
	// if err != nil && (strings.Contains(err.Error(), "connection reset") || strings.Contains(err.Error(), "reset by peer")) {
	// 	remoteIP := c.RemoteAddr().(*net.TCPAddr).IP.String()

	// 	log.Printf("RST 攻击检测: 来源 %s, 累计攻击次数 %d", remoteIP)

	// 	// 防护逻辑：临时封禁异常 IP（可扩展为 IP 黑名单）
	// 	//	go s.tempBlockIP(remoteIP, 5*time.Minute)
	// }
	//fmt.Println(err, c.RemoteAddr().String(), "断开连接")
	atomic.AddInt64(&cool.Connected, -1)

	//logging.Infof("conn[%v] disconnected", c.RemoteAddr().String())
	v, _ := c.Context().(*player.ClientData)

	v.LF.Close()
	if v.Player != nil {
		v.Player.Save() //保存玩家数据

	}

	//}
	//关闭连接
	return
}
func (s *Server) OnTick() (delay time.Duration, action gnet.Action) {
	g.Log().Async().Info(context.Background(), gtime.Now().ISO8601(), "服务器ID", cool.Config.ServerInfo.OnlineID, "链接数", atomic.LoadInt64(&cool.Connected))
	if s.quit && atomic.LoadInt64(&cool.Connected) == 0 {
		//执行正常退出逻辑
		os.Exit(0)
	}
	return 30 * time.Second, gnet.None
}
func (s *Server) OnBoot(eng gnet.Engine) gnet.Action {
	s.eng = eng

	service.NewServerService().SetServerID(s.serverid, s.port) //设置当前服务器端口
	return gnet.None
}

func (s *Server) OnOpen(conn gnet.Conn) (out []byte, action gnet.Action) {
	if s.network != "tcp" {
		return nil, gnet.Close
	}

	if conn.Context() == nil {
		conn.SetContext(player.NewClientData(conn)) //注入data
	}

	atomic.AddInt64(&cool.Connected, 1)

	return nil, gnet.None
}

func (s *Server) OnTraffic(c gnet.Conn) (action gnet.Action) {
	defer func() {
		if err := recover(); err != nil { // 恢复 panic，err 为 panic 错误值
			// 1. 打印错误信息
			if t, ok := c.Context().(*player.ClientData); ok {
				if t.Player != nil {
					if t.Player.Info != nil {
						cool.Logger.Error(context.TODO(), "OnTraffic 错误：", cool.Config.ServerInfo.OnlineID, t.Player.Info.UserID, err)
						t.Player.Service.Info.Save(*t.Player.Info)

					}

				}

			}

		}
	}()

	ws := c.Context().(*player.ClientData).Wsmsg
	if ws.Tcp { //升级失败时候防止缓冲区溢出
		return s.handleTCP(c)

	}

	tt, len1 := ws.ReadBufferBytes(c)
	if tt == gnet.Close {

		return gnet.Close
	}

	ok, action := ws.Upgrade(c)
	if action != gnet.None { //连接断开
		return action
	}
	if !ok { //升级失败,说明是tcp连接
		ws.Tcp = true

		return s.handleTCP(c)

	}
	//	fmt.Println(ws.Buf.Bytes())
	c.Discard(len1)

	messages, err := ws.Decode(c)
	if err != nil {
		return gnet.Close
	}
	if messages == nil {
		return
	}

	for _, msg := range messages {

		s.onevent(c, msg.Payload)
		//t.OnEvent(msg.Payload)
	}

	return gnet.None
}

const maxBodyLen = 10 * 1024 // 业务最大包体长度，按需调整
func (s *Server) handleTCP(conn gnet.Conn) (action gnet.Action) {

	conn.Context().(*player.ClientData).IsCrossDomain.Do(func() { //跨域检测
		handle(conn)
	})

	//	handle(c)
	// 先读取4字节的包长度
	lenBuf, err := conn.Peek(4)

	if err != nil {
		if errors.Is(err, io.ErrShortBuffer) {
			return
		}
		return gnet.Close
	}

	bodyLen := binary.BigEndian.Uint32(lenBuf)

	if bodyLen > maxBodyLen {
		return gnet.Close
	}

	if conn.InboundBuffered() < int(bodyLen) {
		return
	}
	// 提取包体
	body, err := conn.Next(int(bodyLen))
	if err != nil {
		if errors.Is(err, io.ErrShortBuffer) {
			return
		}
		return gnet.Close
	}

	s.onevent(conn, body)

	if conn.InboundBuffered() > 0 {
		if err := conn.Wake(nil); err != nil { // wake up the connection manually to avoid missing the leftover data

			return gnet.Close
		}
	}
	return action

}

// CROSS_DOMAIN 定义跨域策略文件内容
const CROSS_DOMAIN = "<?xml version=\"1.0\"?><!DOCTYPE cross-domain-policy><cross-domain-policy><allow-access-from domain=\"*\" to-ports=\"*\" /></cross-domain-policy>\x00"

// TEXT 定义跨域请求的文本格式
const TEXT = "<policy-file-request/>\x00"

func handle(c gnet.Conn) {

	// 读取数据并检查是否为跨域请求
	data, err := c.Peek(len(TEXT))
	if err != nil {
		log.Printf("Error reading cross-domain request: %v", err)
		return
	}

	if string(data) == TEXT { //判断是否是跨域请求
		//log.Printf("Received cross-domain request from %s", c.RemoteAddr())
		// 处理跨域请求
		c.Write([]byte(CROSS_DOMAIN))
		c.Discard(len(TEXT))

		return
	}

	//return
}

func (s *Server) onevent(c gnet.Conn, v []byte) {
	if t, ok := c.Context().(*player.ClientData); ok {
		var header common.TomeeHeader
		// 解析Len（0-3字节）
		header.Len = binary.BigEndian.Uint32(v[0:4])
		// 解析Version（第4字节）
		//header.Version = v[4]
		// 解析CMD（5-8字节）
		header.CMD = binary.BigEndian.Uint32(v[5:9])
		// 解析UserID（9-12字节）
		header.UserID = binary.BigEndian.Uint32(v[9:13])
		// 解析Result（13-16字节）
		//header.Result = binary.BigEndian.Uint32(v[13:17])
		// 解析数据部分（17字节之后）
		header.Data = make([]byte, 0)
		if len(v) > 17 {
			header.Data = v[17:]

		}

		s.workerPool.Submit(func() {
			t.LF.Producer().Write(header)
		})

	}
}