Exemple #1
0
 /// <summary>
 /// 解析协议信息,解析出来的数据都会赋值给每个变量。用户可以通过访问后续的变量来得到相关数据
 /// </summary>
 /// <returns>成功返回true</returns>
 public bool ParseProtocol()
 {
     if (m_pData == null || m_pData.Count <= 3)
         return false;
     int buf_id = 0;
     byte val = Convert.ToByte(m_pData[buf_id++]);
     if (val != 0x7e)
         return false;
     val = Convert.ToByte(m_pData[m_pData.Count-1]);
     if (val != 0x7e)
         return false;
     //转移还原
     ArrayList msg = new ArrayList();
     msg = m_pData.GetRange(buf_id, m_pData.Count - 2 - buf_id);
     revser_transfer(msg);
     //验证checksum
     byte chksum = Checksum(msg);
     if(chksum != Convert.ToByte(m_pData[m_pData.Count -2]))
         return false;
     //parse header
     if (msg.Count < 12)
         return false;
     if (m_header == null)
         m_header = new HGMessageHeader();
     ArrayList header = new ArrayList(); 
     header = msg.GetRange(0, 12);//不管是否需要打包,以防万一都发12个数据过去
     if (!m_header.parse(header))
         return false;
     //parse body
     int body_start = m_header.isPackget ? 12 : 8;
     ArrayList body = new ArrayList();
     body = msg.GetRange(body_start, Convert.ToInt32(m_header.MsgBodySize));
     if(body.Count < 2)
         return false;
     byte body_type = Convert.ToByte(body[1]);
     switch (body_type)
     {
         case 1:
             m_body = new HGMessageBodyStartPosition();
             break;
         case 2:
             m_body = new HGMessageBodyEndPosition();
             break;
         case 3:
             m_body = new HGMessageBodyNavigationState();
             break;
         case 4:
             m_body = new HGMessageBodyNavigationStateIdent();
             break;
         case 11:
             m_body = new HGMessageBodyCarInfo();
             break;
         case 12:
             m_body = new HGMessageBodyPosition();
             break;
         case 13:
             m_body = new HGMessageBodyTracePlayback();
             break;
     }
     if (!m_body.parse(body))
         return false;
     return true;
 }
Exemple #2
0
 public static HGMessageHeader creat_header(UInt16 id, bool ispacket, UInt16 encrypt)
 {
     HGMessageHeader head = new HGMessageHeader();
     head.ID = id;
     head.SequenceNumber = SequenceNumber;
     head.isPackget = ispacket;
     head.EncryptType = encrypt;
     return head;
 }