private void OnStatusUpdated(object sender, StatusEventArgs e)
{
if (e.Type == NetworkUtility.requestStatus) //Request status
{
if (e.Status == NetworkUtility.sucessfulStatus)
{
lstStatus.Items.Insert(0, NetworkUtility.GetStatusInfo(e.Type, e.Status,
NetworkUtility.GetRequestInfo(operation, client.GetDataLength())));
//request success and receive data now
client.ReceiveData(Int32.Parse(txtTimeout.Text));
}
else
{
lstStatus.Items.Insert(0, NetworkUtility.GetStatusInfo(e.Type, e.Status, null));
grid.IsEnabled = true;
}
}
else if (e.Type == NetworkUtility.receiveStatus) //Receive status
{
if (e.Status == 0)
{
if (operation == NetworkUtility.encodeOper)
{
count++;
}
else if (operation == NetworkUtility.decodeOper)
{
count--;
}
}
//update UI about the response.
lblEncodeCycleCount.Content = count + " (cycle count)";
lstStatus.Items.Insert(0, NetworkUtility.GetStatusInfo(e.Type, e.Status, null));
grid.IsEnabled = true;
}
}
private void Run()
{
while (receiveEvent.WaitOne() && !isShutDown)
{
byte respStatus = 0;
StatusEventArgs statusEvent = new StatusEventArgs();
try
{
int respLength = 0;
int readSoFar = 0;
byte[] respData = null;
do
{
try
{
stream.ReadTimeout = timeMillis;
byte[] inStream = new byte[dataLength];
int read = stream.Read(inStream, 0, dataLength);
//reading data in first go
if (readSoFar == 0)
{
respStatus = inStream[respStatusPos]; //3rd byte
//Get response length of 4 bytes.
byte[] respLengthData = new byte[respLengthSize];
Array.Copy(inStream, respLengthPos, respLengthData, 0, respLengthSize); // 4th byte to 4 bytes length
respLength = BitConverter.ToInt32(respLengthData, 0);
//reading response.
readSoFar = read <= respLength ? read : respLength;
respData = new byte[respLength];
Array.Copy(inStream, 0, respData, 0, readSoFar);
}
else
{
// reading remaining data.
int nextRead = (read + readSoFar) < respLength ? read : (respLength - readSoFar);
Array.Copy(inStream, 0, respData, readSoFar, nextRead);
readSoFar = readSoFar + nextRead;
}
//exit if no data to read or responded with error code
if (read == 0 || respStatus != 0)
{
break;
}
}
catch (Exception ex)
{
respStatus = (byte)NetworkUtility.exceptErr;
break;
}
} while (readSoFar < respLength);
if (respStatus == 0 && respLength <= maxRespLength)
{
//store encrypted data
statusEvent.Data = null;
statusEvent.Data = new byte[respLength - respSizeWithoutData];
//read response data from 8th byte to last but one.
Array.Copy(respData, respDataPos, statusEvent.Data, 0, statusEvent.Data.Length);
}
else if (respStatus == 0 && respLength > maxRespLength)
{
// response status assigned as server response status returning zero
// eventhough max response size is greater than 1048576
respStatus = (byte)(NetworkUtility.maxRespErr);
}
}catch (Exception ex)
{
respStatus = (byte)NetworkUtility.exceptErr;
}
finally
{
stream.Close();
}
statusEvent.Type = NetworkUtility.receiveStatus;
statusEvent.Status = respStatus;
DataReceived(this, statusEvent);
receiveEvent.Reset();
}
}
