private void dataavailable(string msg) // Used for cross-thread operations on the dataavailLBL
{
if (InvokeRequired)
{
LabelChanger method = new LabelChanger(dataavailable);
Invoke(method, msg);
return;
}
dataavailLBL.Text = "Data available!";
}
private void RecvTCPData(IAsyncResult res)
{
LabelChanger lblchgr = new LabelChanger(dataavailable); // Used for cross thread operations on dataavailLBL
ButtonStateChanger btnchgr = new ButtonStateChanger(BtnStateChanger);
NetworkStream stream = tcprecvr.GetStream(); // Get the TCP data stream
int nbytes = stream.EndRead(res); // Get the number of bytes read, and end the read
if (nbytes == 0) // Finished reading
{
tcprecvr.Close(); // Close the TCP connection
lblchgr.Invoke("Data available!"); // Inform the user there is a .WAV file to be played
btnchgr.Invoke(true);
BeginListening(); // Begin listening to connection requests again
}
else // Not finished reading, data in buffer
{
wavstream.Write(readbuf, 0, nbytes); // Write the data read into the .WAV stream
stream.BeginRead(readbuf, 0, readbuf.Length, new AsyncCallback(RecvTCPData), null); // Start reading in data again
}
}
private void RecvTcp(IAsyncResult res) // Event function that will handle TCP connection attempts
{
LabelChanger lblchgr = new LabelChanger(dataavailable); // Used for cross thread operations on dataavailLBL
ButtonStateChanger btnchgr = new ButtonStateChanger(BtnStateChanger); // Used for cross thread operations on the play & stop buttons
wavstream = new MemoryStream(); // Clear the wav stream, we don't want two wav files in one stream, it would cause errors.
lblchgr.Invoke("Data unavailable."); // No data available yet.
btnchgr.Invoke(false); // Disable the play, stop buttons
tcprecvr = tlisten.EndAcceptTcpClient(res); // Create a new TCP connection with the requester
NetworkStream stream = tcprecvr.GetStream(); // Get the TCP network stream
if (stream.CanRead)
{
stream.BeginRead(readbuf, 0, readbuf.Length, new AsyncCallback(RecvTCPData), null);
}
else
{
tcprecvr.Close();
MessageBox.Show("An error has occurred. Unable to read incoming TCP stream.", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error, MessageBoxDefaultButton.Button1);
}
}
