gonet2 / agent Goto Github PK

看到代码里有段逻辑是进行协议序号校验的，可以防止重放攻击：
// 数据包序列号验证
if seq_id != sess.PacketCount {
sess.Flag |= SESS_KICKED_OUT
return nil
}
很多情况下这可能造成误判，有时候并不是故意重放，比如客户端由于网络原因没有收到服务器回包，会重发上一次请求，这属于正常重放。

panic: reflect: call of reflect.Value.Int on zero Value

goroutine 9 [running]:
reflect.Value.Int(0x0, 0x0, 0x0, 0x174d146)
/usr/local/go/src/reflect/value.go:908 +0x141
agent/vendor/golang.org/x/net/ipv4.sysfd(0x1a8d440, 0xc42000e1a8, 0x136d8c8, 0xc420041e60, 0xc420041fa8)
/Users/apple/gamejob/gonet2/src/agent/vendor/golang.org/x/net/ipv4/helper_unix.go:46 +0x196
agent/vendor/golang.org/x/net/ipv4.(*genericOpt).sysfd(0xc420041ec0, 0x16a2de0, 0x172e8c0, 0x1)
/Users/apple/gamejob/gonet2/src/agent/vendor/golang.org/x/net/ipv4/helper_unix.go:17 +0x57
agent/vendor/golang.org/x/net/ipv4.(*genericOpt).SetTOS(0xc420041ec0, 0xb8, 0xc42000e1a8, 0x1a8d440)
/Users/apple/gamejob/gonet2/src/agent/vendor/golang.org/x/net/ipv4/genericopt_posix.go:29 +0x45
agent/vendor/github.com/xtaci/kcp-go.(*Listener).SetDSCP(0xc420114680, 0x2e, 0x0, 0x0)

在这里的for是不是没有释放？

似乎是这里的case <-sess.Die无法进去，不知道该怎么改...

for {
		// solve dead link problem:
		// physical disconnection without any communcation between client and server
		// will cause the read to block FOREVER, so a timeout is a rescue.
		conn.SetReadDeadline(time.Now().Add(config.readDeadline))

		// read 2B header
		n, err := io.ReadFull(conn, header)
		if err != nil {
			log.Warningf("read header failed, ip:%v reason:%v size:%v", sess.IP, err, n)
			return
		}
		size := binary.BigEndian.Uint16(header)

		// alloc a byte slice of the size defined in the header for reading data
		payload := make([]byte, size)
		n, err = io.ReadFull(conn, payload)
		if err != nil {
			log.Warningf("read payload failed, ip:%v reason:%v size:%v", sess.IP, err, n)
			return
		}

		// deliver the data to the input queue of agent()
		select {
		case in <- payload: // payload queued
		case <-sess.Die:
			log.Warningf("connection closed by logic, flag:%v ip:%v", sess.Flag, sess.IP)
			return
		}
	}

既然现在不依赖gvp/gvm了，是不是可以改下目录结构来支持go get
只要设定好了GOPATH, 直接
go get -u github.com/gonet2/{agent,game}
就可以clone并安装好agent和game
方便快速的体验

同一个grpc连接，当stream创建超过100个的话，超出的stream创建会卡死
也就是说agent和game之间最多只能创建100个session的链接

Hello sir can you provide binary for Linux 32 bit please .I have tried to compile but i have error

go build
route.go:10:2: cannot find package "agent/client_handler" in any of:
/root/go/src/agent/client_handler (from $GOROOT)
/root/goworkspace/src/agent/client_handler (from $GOPATH)
buffer.go:11:2: cannot find package "agent/misc/packet" in any of:
/root/go/src/agent/misc/packet (from $GOROOT)
/root/goworkspace/src/agent/misc/packet (from $GOPATH)
agent.go:8:2: cannot find package "agent/pb" in any of:
/root/go/src/agent/pb (from $GOROOT)
/root/goworkspace/src/agent/pb (from $GOPATH)
startup.go:4:2: cannot find package "agent/services" in any of:
/root/go/src/agent/services (from $GOROOT)
/root/goworkspace/src/agent/services (from $GOPATH)
agent.go:9:2: cannot find package "agent/types" in any of:
/root/go/src/agent/types (from $GOROOT)
/root/goworkspace/src/agent/types (from $GOPATH)
agent.go:10:2: cannot find package "agent/utils" in any of:
/root/go/src/agent/utils (from $GOROOT)
/root/goworkspace/src/agent/utils (from $GOPATH)

描述：当客户端第一次连接的时候，在 proxy_user_request 处理时 被 SESS_KICKED_OUT了。

这时候update_task还没来的及调用，客户端还没有收到kcp的ACK包，会一直重复发数据。

加入<-time.After(1 * time.Second) update_task才被调用。

大神能支持websocket