SendBuffMsg存在安全问题.

c.msgBuffChan <- msg
//在大并发高负载的情况下 经常因为这句崩溃,原因是向一个关闭的chan写入数据,
//可能是在“将data封包，并且发送”的时候chan被其他携程关闭了 所有在发送前最后再检查一下最好！

func (c *Connection) SendBuffMsg(msgId uint32, data []byte) error {
if c.isClosed == true {
return errors.New("Connection closed when send buff msg")
}
//将data封包，并且发送
dp := NewDataPack()
msg, err := dp.Pack(NewMsgPackage(msgId, data))
if err != nil {
fmt.Println("Pack error msg id = ", msgId)
return errors.New("Pack error msg ")
}

//写回客户端
c.msgBuffChan <- msg

return nil
}

错误日志:

---> CallOnConnStart....
[Writer Goroutine is running]
[Reader Goroutine is running]
read msg head error EOF
Conn Stop()...ConnID = 156
---> CallOnConnStop....
Send Buff Data error:, write tcp4 172.21.0.15:7777->39.189.45.248:14870: use of closed network connection Conn Writer exit
39.189.45.248:14870 [conn Writer exit!]
connection Remove ConnID= 156 successfully: conn num = 0
39.189.45.248:14870 [conn Reader exit!]
panic: send on closed channel

goroutine 36 [running]:
github.com/aceld/zinx/znet.(*Connection).SendBuffMsg(0xc0000d00e0, 0x1f4, 0xc0003f9400, 0x95, 0xa0, 0x0, 0x0)
/Users/jamie/go/pkg/mod/github.com/aceld/zinx@v0.0.0-20200315073925-f09df55dc746/znet/connection.go:226 +0x1ec
YmServer/tools.Response(0xac40c0, 0xc000524a20, 0x1000001f4, 0x9fc41e, 0x2, 0xc000515470)
/Users/jamie/go/src/YmServer/tools/toos.go:35 +0x10d
YmServer/controller.(*GetMyGameProxyRouter).Handle(0xe84c88, 0xac40c0, 0xc000524a20)
/Users/jamie/go/src/YmServer/controller/my_game.go:72 +0x517
github.com/aceld/zinx/znet.(*MsgHandle).DoMsgHandler(0xc000217080, 0xac40c0, 0xc000524a20)
/Users/jamie/go/pkg/mod/github.com/aceld/zinx@v0.0.0-20200315073925-f09df55dc746/znet/msghandler.go:47 +0xe4
github.com/aceld/zinx/znet.(*MsgHandle).StartOneWorker(0xc000217080, 0x6, 0xc000234720)
/Users/jamie/go/pkg/mod/github.com/aceld/zinx@v0.0.0-20200315073925-f09df55dc746/znet/msghandler.go:70 +0x103
created by github.com/aceld/zinx/znet.(*MsgHandle).StartWorkerPool
/Users/jamie/go/pkg/mod/github.com/aceld/zinx@v0.0.0-20200315073925-f09df55dc746/znet/msghandler.go:83 +0x50