/// <summary>
/// 读取头信息的总长度 命令id 和序列号
/// </summary>
/// <param name="argSocket"></param>
public void ReadHead(Socket argSocket)
{
byte[] vTempBytes = new byte[4];
argSocket.Receive(vTempBytes);
TotalMsgLen = SGIPCommand.Bytes4ToInt(vTempBytes); // 长度
byte[] vCommandIdByte = new byte[4];
argSocket.Receive(vCommandIdByte);
CommandId = (uint)SGIPCommand.Bytes4ToInt(vCommandIdByte); // 命令id
UnicomSN = new byte[12];
argSocket.Receive(vTempBytes);
byte[] vSrcnodeByte = new byte[5];
Buffer.BlockCopy(vTempBytes, 0, vSrcnodeByte, 1, 4);
long vSrcNode = SGIPCommand.Bytes4ToLong(vSrcnodeByte);
Buffer.BlockCopy(vTempBytes, 0, UnicomSN, 0, 4);
argSocket.Receive(vTempBytes);
string vDate = SGIPCommand.Bytes4ToInt(vTempBytes) + "";
Buffer.BlockCopy(vTempBytes, 0, UnicomSN, 4, 4);
argSocket.Receive(vTempBytes);
string vSeqNum = SGIPCommand.Bytes4ToInt(vTempBytes) + "";
SequenceNumber = vSrcNode + vDate + vSeqNum;
Buffer.BlockCopy(vTempBytes, 0, UnicomSN, 8, 4);
}
/// <summary>
/// 获取头字节
/// </summary>
/// <param name="argSrcNode"></param>
/// <returns></returns>
public byte[] GetCommandHeadBytes()
{
byte[] vSrcNode = SGIPCommand.LongToBytesReverse(SocketConfig.SourceNode);
byte[] vDateCmd = SGIPCommand.IntToBytesReverse(GetDateCmd()); // 命令产生日期
byte[] vSeqNum = SGIPCommand.IntToBytesReverse(GetSeqNumber()); // 序列号
byte[] vMsgLen = SGIPCommand.IntToBytesReverse(TotalMsgLen); // 命令体总长度
byte[] vCommandId = BitConverter.GetBytes(CommandId);
Array.Reverse(vCommandId);
SequenceNumber = SocketConfig.SourceNode.ToString() + SGIPCommand.Bytes4ToInt(vDateCmd) + SGIPCommand.Bytes4ToInt(vSeqNum);
byte[] vCommandHeadbytes = new byte[(int)SGIPCommandDefine.LEN_SGIP_HEADER];
byte[] vCmdseq = new byte[12]; // 总序列号(MessageLength + Commandid + sequenceNumber)
Buffer.BlockCopy(vMsgLen, 0, vCommandHeadbytes, 0, 4);
Buffer.BlockCopy(vCommandId, 0, vCommandHeadbytes, 4, 4);
if (UnicomSN != null)
{
Buffer.BlockCopy(UnicomSN, 0, vCmdseq, 0, 12);
byte[] vTempBytes = new byte[4];
Buffer.BlockCopy(UnicomSN, 0, vTempBytes, 0, 4);
byte[] vSrcNodeByte = new byte[5];
Buffer.BlockCopy(vTempBytes, 0, vSrcNodeByte, 1, 4);
uint vSrc = BitConverter.ToUInt32(vSrcNodeByte, 0);
Buffer.BlockCopy(UnicomSN, 4, vTempBytes, 0, 4);
string vDate = SGIPCommand.Bytes4ToInt(vTempBytes) + "";
Buffer.BlockCopy(UnicomSN, 8, vTempBytes, 0, 4);
string vNum = SGIPCommand.Bytes4ToInt(vTempBytes) + "";
SequenceNumber = vSrc + vDate + vNum;
}
else
{
Buffer.BlockCopy(vSrcNode, 0, vCmdseq, 0, 4);
Buffer.BlockCopy(vDateCmd, 0, vCmdseq, 4, 4);
Buffer.BlockCopy(vSeqNum, 0, vCmdseq, 8, 4);
}
Buffer.BlockCopy(vCmdseq, 0, vCommandHeadbytes, 8, 12);
return(vCommandHeadbytes);
}