func (this *NodeComponent) ReceiveMsg() {
defer func() {
if err := recover(); err != nil {
fmt.Println("NodeComponent Error: " + err.(error).Error())
}
}()
headbuff := make([]byte, define.PACKET_HEAD_LEN)
for {
var head structure.Head
var Packet structure.Packet
//如果无连接，尝试重新建立tcp连接
if this.StreeConn == nil {
this.ReConnect()
continue
}
//从tcp连接中先读取头部信息
n, err := this.StreeConn.Read(headbuff)
//如果读取出错，则尝试重新建立tcp连接
if n == 0 || n != define.PACKET_HEAD_LEN || err != nil {
fmt.Println("NodeComponent Error:Read STree msg")
this.ReConnect()
continue
}
err = head.Decode(headbuff)
if err != nil {
fmt.Println("NodeComponent Error: Decode Stree msg")
return
}
databuff := make([]byte, head.DataLen)
//再从连接中读取剩余数据
n, err = this.StreeConn.Read(databuff)
if n == 0 || n != int(head.DataLen) || err != nil {
fmt.Println("NodeComponent Error: Read Stree Data")
this.ReConnect()
continue
}
Packet.Head = head
Packet.Data = databuff
msg := protocol.Message{}
//Packet.Data至少44位
err = msg.Decode(Packet.Data)
if err != nil {
fmt.Println("NodeComponent Error:MSG Decode Failed", err)
return
}
this.ReceiveMsgHandle(&Packet)
}
}
func (this *DaughterHandler) ReceiveFromDaughter(conn *net.Conn) {
for {
//PACKET_HEAD_LEN = 19
headBuf := make([]byte, define.PACKET_HEAD_LEN)
//MAX_BUF = 2048
data := make([]byte, define.MAX_BUF)
//读取头部信息
_, err := (*conn).Read(headBuf)
if err != nil && err != io.EOF {
fmt.Println(err.Error())
continue
} else if err == io.EOF {
fmt.Println("\n", time.Now().String(), " In DaughterHander.ReceiverFromDaughter, connection ", (*conn).RemoteAddr(), " is invalid", "\n")
(*conn).Close()
return
}
head := structure.Head{}
err = head.Decode(headBuf)
if err != nil {
err = errors.New("component: STree.Receive failed, can not decode the head buf, " + err.Error())
fmt.Println(err.Error())
continue
}
if head.DataLen > 0 {
if int(head.DataLen) > len(data) {
data = make([]byte, head.DataLen)
}
//从conn中读取Data[]部分
_, err = (*conn).Read(data[:head.DataLen])
if err != nil && err != io.EOF {
fmt.Println("Got a error ", err)
continue
} else if err == io.EOF {
fmt.Println("\n", time.Now().String(), " In DaughterHander.ReceiverFromDaughter, connection ", (*conn).RemoteAddr(), " is invalid", "\n")
(*conn).Close()
return
}
}
packet := &structure.Packet{head, data[:head.DataLen]}
if packet.Number == define.FORWARD {
msg := push_protocol.Message{}
err = msg.Decode(packet.Data)
if err != nil {
fmt.Println("MSG Decode Failed, ", err)
return
}
fmt.Println("\n", time.Now().String(), " ReceiveFromDaughter, packet.Uuid: ", packet.Uuid, " msg.UserId: ", msg.UserId, " msg.DestId: ", msg.DestId, "\n")
}
this.Dispatch(packet, conn)
}
}
func (this *ParentHandler) ReceiveFromParent() {
for {
//MAX_BUF = 2048
data := make([]byte, define.MAX_BUF)
//PACKET_HEAD_LEN = 19
headBuf := make([]byte, define.PACKET_HEAD_LEN)
if this.masterConn == nil {
time.Sleep(30 * time.Second)
continue
}
//从10.0.0.11:11002上的tcp连接中读取head信息并填充到headbuf
_, err := (*this.masterConn).Read(headBuf)
if err != nil && err != io.EOF {
continue
} else if err == io.EOF {
return
}
head := structure.Head{}
err = head.Decode(headBuf)
if err != nil {
err = errors.New("component: ReceiveFromParent failed, can not decode the head buf, " + err.Error())
fmt.Println(err.Error())
continue
}
if head.DataLen > 0 {
if int(head.DataLen) > len(data) {
data = make([]byte, head.DataLen)
}
//从10.0.0.11:11002上的tcp连接中读取Data部分的数据
_, err = (*this.masterConn).Read(data[:head.DataLen])
if err != nil && err != io.EOF {
continue
} else if err == io.EOF {
return
}
}
packet := structure.Packet{head, data[:head.DataLen]}
this.dispatch(&packet)
}
}