Esempio n. 1
0
func (this *DasProtocol) ReadPacket(goconn *gotcp.Conn) (gotcp.Packet, error) {
	conn := goconn.GetRawConn()
	for {
		data := make([]byte, 1024)
		readLengh, err := conn.Read(data)

		if err != nil { // EOF, or worse
			return nil, err
		}

		if readLengh == 0 { // Connection maybe cloased by the client
			return nil, gotcp.ErrConnClosing
		} else {
			goconn.GetRecvBytes().Write(data[:readLengh])
			fmt.Println(goconn.GetRecvBytes().Bytes())
			if goconn.GetRecvBytes().Bytes()[0] == 0xBA ||
				goconn.GetRecvBytes().Bytes()[0] == 0xBB ||
				goconn.GetRecvBytes().Bytes()[0] == 0xBC {
				if goconn.GetRecvBytes().Len() >= 8 {
					cmdtype, _ := goconn.GetRecvBytes().ReadByte()
					if cmdtype == 0xBA {
						result := goconn.GetRecvBytes().Next(6) // cmdtype + result + serialid
						goconn.GetRecvBytes().Next(1)
						return NewDasPacket(0xBA, result), nil
					} else if cmdtype == 0xBB {
						mac := goconn.GetRecvBytes().Next(6)
						goconn.GetRecvBytes().Next(1)
						return NewDasPacket(0xBB, mac), nil
					} else if cmdtype == 0xBC {
						mac := goconn.GetRecvBytes().Next(6)
						goconn.GetRecvBytes().Next(1)
						return NewDasPacket(0xBC, mac), nil
					}
				} else {
					return nil, gotcp.ErrReadHalf
				}
			} else {
				goconn.GetRecvBytes().Reset()
				return nil, gotcp.ErrReadHalf
			}
		}
	}
}