Yaircc.Net.IRC.Connection.ReceiveCallback C# (CSharp) Method

        private void ReceiveCallback(IAsyncResult result)
        {
            int bytesRead;
            NetworkStream stream;

            try
            {
                stream = this.client.GetStream();
                bytesRead = stream.EndRead(result);
            }
            catch
            {
                return;
            }

            // EndRead() blocks until data is received, so if we have nothing
            // then the connection has been terminated
            if (bytesRead == 0)
            {
                this.IsConnected = false;
                if (this.connectionTerminated != null)
                {
                    this.connectionTerminated(this, EventArgs.Empty);
                }

                return;
            }

            // Get the data, raise the received event and begin listening again
            byte[] buffer = result.AsyncState as byte[];
            string data = this.encoding.GetString(buffer, 0, bytesRead);
            this.currentDataSet = this.currentDataSet + data;

            // If we have received a full payload from the server then handle any pings and despatch to the subscribers
            while (this.currentDataSet.Contains("\n"))
            {
                int delimiterIndex = this.currentDataSet.IndexOf('\n') + 1;
                string payload = this.currentDataSet.Substring(0, delimiterIndex);

                if (payload.StartsWith("PING", StringComparison.OrdinalIgnoreCase))
                {
                    this.ReplyToPing(payload);
                }

                if (this.dataReceived != null)
                {
                    if (!payload.StartsWith("PING", StringComparison.OrdinalIgnoreCase))
                    {
                        this.dataReceived(this, new DataReceivedEventArgs(payload));
                    }
                }

                // If two messages were joined together, then remove the one we just processed and iterate
                // otherwise empty the current data set and begin listening again
                if (delimiterIndex < this.currentDataSet.Length)
                {
                    this.currentDataSet = this.currentDataSet.Substring(delimiterIndex);
                }
                else
                {
                    this.currentDataSet = string.Empty;
                }
            }

            stream.BeginRead(buffer, 0, buffer.Length, this.ReceiveCallback, buffer);
        }