blockingClientTCPTransport.cpp:

- changed magic numbers to enums

blockingTCPTransport.cpp:
- debug helpers only

responseHandlers.*:
- added two new handlers, NOOP and Echo

pvAccessApp/server/responseHandlers.cpp

@@ -63,9 +63,9 @@ namespace epics {
 
             _handlerTable = new ResponseHandler*[HANDLER_TABLE_LENGTH];
             // TODO add real handlers, as they are developed
-            _handlerTable[0] = badResponse;
+            _handlerTable[0] = new NoopResponse(_context, "Beacon");
             _handlerTable[1] = new ConnectionValidationHandler(_context);
-            _handlerTable[2] = badResponse;
+            _handlerTable[2] = new EchoHandler(_context);
             _handlerTable[3] = badResponse;
             _handlerTable[4] = badResponse;
             _handlerTable[5] = badResponse;
@@ -96,6 +96,8 @@ namespace epics {
         ServerResponseHandler::~ServerResponseHandler() {
             delete _handlerTable[0];
             delete _handlerTable[1];
+            delete _handlerTable[2];
+            delete _handlerTable[27];
             delete[] _handlerTable;
         }
 
@@ -137,5 +139,42 @@ namespace epics {
             //transport.setPriority(payloadBuffer.getShort());
         }
 
+        class EchoTransportSender : public TransportSender {
+        public:
+            EchoTransportSender(osiSockAddr* echoFrom) {
+                memcpy(&_echoFrom, echoFrom, sizeof(osiSockAddr));
+            }
+
+            virtual void send(ByteBuffer* buffer, TransportSendControl* control) {
+                control->startMessage(CMD_ECHO, 0);
+                control->setRecipient(&_echoFrom);
+            }
+
+            virtual void lock() {
+            }
+
+            virtual void unlock() {
+                delete this;
+            }
+        private:
+            osiSockAddr _echoFrom;
+
+            virtual ~EchoTransportSender() {
+            }
+        };
+
+        void EchoHandler::handleResponse(osiSockAddr* responseFrom,
+                Transport* transport, int8 version, int8 command,
+                int payloadSize, epics::pvData::ByteBuffer* payloadBuffer) {
+            AbstractServerResponseHandler::handleResponse(responseFrom,
+                    transport, version, command, payloadSize, payloadBuffer);
+
+            EchoTransportSender* echoReply = new EchoTransportSender(
+                    responseFrom);
+
+            // send back
+            transport->enqueueSendRequest(echoReply);
+        }
+
     }
 }