/// <summary>
/// Receive data from a client.
/// </summary>
/// <param name="userConnectionToken">User connection token.</param>
/// <param name="socketAsyncEvent">Socket async event arguments.</param>
private void ReceiveData(ILiteConnectionToken userConnectionToken, SocketAsyncEventArgs socketAsyncEvent)
{
if (!userConnectionToken.Connection.Socket.ReceiveAsync(socketAsyncEvent))
{
ProcessReceive(userConnectionToken, socketAsyncEvent);
}
}
/// <summary>
/// Starts the receive process for the given connection and socket.
/// </summary>
/// <param name="connection">User connection.</param>
public void StartReceiving(ILiteConnection connection)
{
ILiteConnectionToken token = BuildConnectionToken(connection);
SocketAsyncEventArgs socketAsyncEvent = GetSocketEvent();
socketAsyncEvent.UserToken = token;
ReceiveData(token, socketAsyncEvent);
}
private void ProcessReceive(ILiteConnectionToken clientToken, SocketAsyncEventArgs socketAsyncEvent)
{
try
{
if (socketAsyncEvent.BytesTransferred > 0)
{
if (socketAsyncEvent.SocketError == SocketError.Success)
{
if (socketAsyncEvent.Buffer is null)
{
throw new LiteNetworkException("A network error occurred: socket buffer is null.");
}
IEnumerable <byte[]> messages = _packetParser.ParseIncomingData(clientToken.DataToken, socketAsyncEvent.Buffer, socketAsyncEvent.BytesTransferred);
if (messages.Any())
{
clientToken.ProcessReceivedMessages(messages);
}
if (clientToken.DataToken.DataStartOffset >= socketAsyncEvent.BytesTransferred)
{
clientToken.DataToken.Reset();
}
ReceiveData(clientToken, socketAsyncEvent);
}
else
{
throw new LiteReceiverException(clientToken.Connection, socketAsyncEvent.SocketError);
}
}
else
{
clientToken.Dispose();
ClearSocketEvent(socketAsyncEvent);
OnDisconnected(clientToken.Connection);
}
}
catch (Exception e)
{
OnError(e);
}
}
