protected virtual Object CreateCommand()

in src/main/csharp/Protocol/StompWireFormat.cs [157:221]
58 lines of code
12 McCabe index (conditional complexity)

        protected virtual Object CreateCommand(StompFrame frame)
        {
            string command = frame.Command;

            if (Tracer.IsDebugEnabled)
            {
                Tracer.Debug("StompWireFormat - Received " + frame.ToString());
            }

            if(command == "RECEIPT")
            {
                string text = frame.RemoveProperty("receipt-id");
                if(text != null)
                {
                    Response answer = new Response();
                    if(text.StartsWith("ignore:"))
                    {
                        text = text.Substring("ignore:".Length);
                    }

                    answer.CorrelationId = Int32.Parse(text);
                    return answer;
                }
            }
            else if(command == "CONNECTED")
            {
                return ReadConnected(frame);
            }
            else if(command == "ERROR")
            {
                string text = frame.RemoveProperty("receipt-id");
                
                if(text != null && text.StartsWith("ignore:"))
                {
                    Response answer = new Response();
                    answer.CorrelationId = Int32.Parse(text.Substring("ignore:".Length));
                    return answer;
                }
                else
                {
                    ExceptionResponse answer = new ExceptionResponse();
                    if(text != null)
                    {
                        answer.CorrelationId = Int32.Parse(text);
                    }

                    BrokerError error = new BrokerError();
                    error.Message = frame.RemoveProperty("message");
                    answer.Exception = error;
                    return answer;
                }
            }
            else if(command == "KEEPALIVE")
            {
                return new KeepAliveInfo();
            }
            else if(command == "MESSAGE")
            {
                return ReadMessage(frame);
            }
            
            Tracer.Error("Unknown command: " + frame.Command + " headers: " + frame.Properties);
            
            return null;
        }