private void buttonSendComplexMessage_Click(object sender, EventArgs e)
{
try
{
// Create the message to send
Messages.ComplexMessage message = new Messages.ComplexMessage();
message.UniqueID = Guid.NewGuid();
message.Time = DateTimeOffset.Now;
message.Message = textBoxMessage.Text;
// Serialize the message to a binary array
byte[] binaryMessage = Messages.Util.Serialize(message);
// Send the message; the state is used by ClientSocket_WriteCompleted to display an output to the log
string description = "<complex message: " + message.UniqueID + ">";
ClientSocket.WriteAsync(binaryMessage, description);
textBoxLog.AppendText("Sending message " + description + Environment.NewLine);
}
catch (Exception ex)
{
ResetSocket();
textBoxLog.AppendText("Error sending message to socket: [" + ex.GetType().Name + "] " + ex.Message + Environment.NewLine);
}
finally
{
RefreshDisplay();
}
}
private void ChildSocket_PacketArrived(ServerChildTcpSocket socket, AsyncResultEventArgs <byte[]> e)
{
try
{
// Check for errors
if (e.Error != null)
{
textBoxLog.AppendText("Client socket error during Read from " + socket.RemoteEndPoint.ToString() + ": [" + e.Error.GetType().Name + "] " + e.Error.Message + Environment.NewLine);
ResetChildSocket(socket);
}
else if (e.Result == null)
{
// PacketArrived completes with a null packet when the other side gracefully closes the connection
textBoxLog.AppendText("Socket graceful close detected from " + socket.RemoteEndPoint.ToString() + Environment.NewLine);
// Close the socket and remove it from the list
ResetChildSocket(socket);
}
else
{
// At this point, we know we actually got a message.
// Deserialize the message
object message = Messages.Util.Deserialize(e.Result);
// Handle the message
Messages.StringMessage stringMessage = message as Messages.StringMessage;
if (stringMessage != null)
{
textBoxLog.AppendText("Socket read got a string message from " + socket.RemoteEndPoint.ToString() + ": " + stringMessage.Message + Environment.NewLine);
return;
}
Messages.ComplexMessage complexMessage = message as Messages.ComplexMessage;
if (complexMessage != null)
{
textBoxLog.AppendText("Socket read got a complex message from " + socket.RemoteEndPoint.ToString() + ": (UniqueID = " + complexMessage.UniqueID.ToString() +
", Time = " + complexMessage.Time.ToString() + ", Message = " + complexMessage.Message + ")" + Environment.NewLine);
return;
}
textBoxLog.AppendText("Socket read got an unknown message from " + socket.RemoteEndPoint.ToString() + " of type " + message.GetType().Name + Environment.NewLine);
}
}
catch (Exception ex)
{
textBoxLog.AppendText("Error reading from socket " + socket.RemoteEndPoint.ToString() + ": [" + ex.GetType().Name + "] " + ex.Message + Environment.NewLine);
ResetChildSocket(socket);
}
finally
{
RefreshDisplay();
}
}
private void buttonSendComplexMessage_Click(object sender, EventArgs e)
{
// This function sends a complex message to all connected clients
Messages.ComplexMessage message = new Messages.ComplexMessage();
message.UniqueID = Guid.NewGuid();
message.Time = DateTimeOffset.Now;
message.Message = textBoxMessage.Text;
string description = "<complex message: " + message.UniqueID + ">";
// Serialize it to a binary array
byte[] binaryObject = Messages.Util.Serialize(message);
// Keep a list of all errors for child sockets
Dictionary <ServerChildTcpSocket, Exception> SocketErrors = new Dictionary <ServerChildTcpSocket, Exception>();
// Start a send on each child socket
foreach (KeyValuePair <ServerChildTcpSocket, ChildSocketContext> childSocket in ChildSockets)
{
// Ignore sockets that are disconnecting
if (childSocket.Value.State != ChildSocketState.Connected)
{
continue;
}
try
{
textBoxLog.AppendText("Sending to " + childSocket.Key.RemoteEndPoint.ToString() + ": " + description + Environment.NewLine);
SocketPacketProtocol.WritePacketAsync(childSocket.Key, binaryObject, description);
}
catch (Exception ex)
{
// Make a note of the error to handle later
SocketErrors.Add(childSocket.Key, ex);
}
}
// Handle all errors. This is done outside the enumeration loop because the child socket
// error recovery will remove the socket from the list of child sockets.
foreach (KeyValuePair <ServerChildTcpSocket, Exception> error in SocketErrors)
{
textBoxLog.AppendText("Child Socket error sending message to " + error.Key.RemoteEndPoint.ToString() + ": [" + error.Value.GetType().Name + "] " + error.Value.Message + Environment.NewLine);
ResetChildSocket(error.Key);
}
// In case there were any errors, the display may need to be updated
RefreshDisplay();
}
