private void ReadTimerCallback(object state)
{
if (IsOpen())
{
try
{
GPSDataRequestParameter reqPara = new GPSDataRequestParameter();
reqPara.LastDataID = lastDataID;
reqPara.LastDataIDSpecified = true;
reqPara.MaxLines = 10;
reqPara.MaxLinesSpecified = true;
reqPara.LatestDataOnly = !bIsReplay;
reqPara.LatestDataOnlySpecified = true;
reqPara.PathID = pathInfo.ID;
reqPara.PathIDSpecified = true;
reqPara.PathPassword = pathInfo.Password;
GPSDownloadData[] receivedDatas = serviceClient.GetGPSData(reqPara);
if (receivedDatas != null)
{
foreach (GPSDownloadData dataItem in receivedDatas)
{
if (dataItem != null)
{
// Update the id
if (lastDataID < dataItem.ID)
{
lastDataID = dataItem.ID;
}
if (dataItem.NMEASentence.Length == 0)
{
continue;
}
byte[] data = new byte[System.Text.Encoding.Default.GetByteCount(dataItem.NMEASentence)];
data = System.Text.Encoding.Default.GetBytes(dataItem.NMEASentence);
// Dispatch the received data.
if (data != null)
{
if (Read != null)
{
Read(this, data);
}
}
}
}
}
}
catch (System.Exception)
{
// Don't exit if failed.
}
// ToDO - for the replay model, we should use the time tamp of the gps data.
try
{
// There is exception when close the port during receiving process.
if (!disposed)
{
readTimer.Change(1000, Timeout.Infinite); // Read data every second
}
}
catch (System.Exception)
{
}
}
}