fixed dynamic port allocation

pvAccessApp/remote/blockingTCPAcceptor.cpp

@@ -66,6 +66,9 @@ namespace epics {
                     THROW_BASE_EXCEPTION(temp.str().c_str());
                 }
                 else {
+                    
+                    epicsSocketEnableAddressReuseDuringTimeWaitState(_serverSocketChannel);
+
                     // try to bind
                     int retval = ::bind(_serverSocketChannel,
                             &_bindAddress.sa, sizeof(sockaddr));

pvAccessApp/server/serverContext.cpp

@@ -143,8 +143,7 @@ void ServerContextImpl::internalInitialize()
 	initializeBroadcastTransport();
 
 	_acceptor = new BlockingTCPAcceptor(this, _serverPort, _receiveBufferSize);
-	//TODO fix this
-	//_serverPort = _acceptor->getBindAddress()->ia.sin_port;
+	_serverPort = ntohs(_acceptor->getBindAddress()->ia.sin_port);
 
 	_beaconEmitter = new BeaconEmitter(_broadcastTransport, this);
 }