/// <summary>
/// 接收数据
/// </summary>
/// <param name="ar"></param>
private void OnReceive(IAsyncResult ar)
{
int len = -1;
string strID;
byte[] id = new byte[4];
try
{
EndPoint remote = (EndPoint)(ar.AsyncState);
len = ServerSocket.EndReceiveFrom(ar, ref remote);
//报文格式过滤
if (buffer[0] == 0xA5 && buffer[1] == 0xA5 && buffer[len - 2] == 0x5A && buffer[len - 1] == 0x5A)
{
Array.Copy(buffer, 3, id, 0, 4);
strID = UtilClass.byteToHexStr(id);
//20180626由于武大项目采用轮询方式通信，因此不需要判断
//判断哈希表中是否存在当前ID，不存在则创建，存在则把数据加入队列
//if (htClient.ContainsKey(strID) == false)
//{
// DataItem dataItem = new DataItem();
// dataItem.Init(ServerSocket, id, strID, updateDataLength, broadcastRemote); //初始化dataItem
// htClient.Add(strID, dataItem);
// //把设备信息存入数据库
// DbClass.addsensorinfo(strID, dataItem.HeartTime.ToString("yyyy-MM-dd HH:mm:ss"), dataItem.status.ToString());
//}
//else
//{
DataItem dataItem = (DataItem)htClient[strID]; //取出address对应的dataitem
byte[] recData = new byte[len];
Array.Copy(buffer, recData, len);
dataItem.AnalyzeData(recData);
//}
}
//继续接收数据
ServerSocket.BeginReceiveFrom(buffer, 0, buffer.Length, SocketFlags.None, ref remote, new AsyncCallback(OnReceive), remote);
}
catch (Exception ex)
{
Console.WriteLine(ex);
UtilClass.writeLog(ex.ToString());
}
}
