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+/*
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ *
+ */
+
+
+/**
+ * client.cpp
+ *
+ * This program is one of two programs that illustrate the
+ * request/response pattern.
+ *
+ * client.cpp (this program)
+ *
+ * Make requests of a service, print the response.
+ *
+ * service.cpp
+ *
+ * Accept requests, reverse the letters in each message, and
+ * return it as a response.
+ *
+ */
+
+
+#include <qpid/client/Connection.h>
+#include <qpid/client/Dispatcher.h>
+#include <qpid/client/Session.h>
+#include <qpid/client/Message.h>
+#include <qpid/client/MessageListener.h>
+
+#include <unistd.h>
+#include <cstdlib>
+#include <iostream>
+
+#include <sstream>
+
+using namespace qpid::client;
+using namespace qpid::framing;
+
+class Listener : public MessageListener{
+private:
+ Session session;
+ std::string destination_name;
+ Dispatcher dispatcher;
+ int counter;
+public:
+ Listener(Session& session, string destination_name):
+ destination_name(destination_name),
+ dispatcher(session),
+ session(session),
+ counter(0)
+ {};
+
+ virtual void listen();
+ virtual void wait();
+ virtual void received(Message& message);
+ ~Listener() { };
+};
+
+
+void Listener::listen() {
+ std::cout << "Activating response queue listener for: " <<destination_name << std::endl;
+
+ session.messageSubscribe(arg::queue=destination_name, arg::destination=destination_name);
+
+ // Allocate credit. Sigh. This really should not be required #####
+ session.messageFlow(arg::destination=destination_name, arg::unit=0, arg::value=1);//messages ### Define a constant?
+ session.messageFlow(arg::destination=destination_name, arg::unit=1, arg::value=0xFFFFFFFF);//bytes ###### Define a constant?
+
+
+ dispatcher.listen(destination_name, this);
+}
+
+
+void Listener::wait() {
+ std::cout << "Waiting for all responses to arrive ..." << std::endl;
+ dispatcher.run();
+}
+
+
+void Listener::received(Message& message) {
+ std::cout << "Response: " << message.getData() << std::endl;
+
+ ++ counter;
+ if (counter > 3) {
+ std::cout << "Shutting down listener for " << destination_name << std::endl;
+ dispatcher.stop();
+ }
+}
+
+
+using std::stringstream;
+using std::string;
+
+int main() {
+ Connection connection;
+ Message request;
+ try {
+ connection.open("127.0.0.1", 5672 );
+ Session session = connection.newSession();
+
+ //--------- Main body of program --------------------------------------------
+
+ // Create a response queue so the server can send us responses
+ // to our requests. Use the client's session ID as the name
+ // of the response queue.
+
+ stringstream response_queue;
+ response_queue << "client " << session.getId();
+
+ // Use the name of the response queue as the routing key
+
+ session.queueDeclare(arg::queue=response_queue.str()); // ### Nice if I could just use strstream for this
+ session.queueBind(arg::queue=response_queue.str(), arg::routingKey=response_queue.str());
+
+ // Create a listener for the response queue and start listening.
+
+ Listener listener(session, response_queue.str());
+ listener.listen();
+
+
+ // The routing key for the request queue is simply
+ // "request_queue", and all clients use the same routing key.
+ //
+ // Each client sends the name of their own response queue so
+ // the service knows where to route messages.
+
+ request.getDeliveryProperties().setRoutingKey("request_queue");
+ request.getHeaders().setString("reply-to", response_queue.str());
+
+ // Now send some requests ...
+
+ string s[] = {
+ "Twas brillig, and the slithy toves",
+ "Did gire and gymble in the wabe.",
+ "All mimsy were the borogroves,",
+ "And the mome raths outgrabe."
+ };
+
+
+ for (int i=0; i<4; i++) {
+ request.setData(s[i]);
+ session.messageTransfer(arg::content=request);
+ std::cout << "Request: " << s[i] << std::endl;
+ }
+
+ // And wait for any outstanding responses to arrive
+
+ listener.wait();
+
+
+ //-----------------------------------------------------------------------------
+
+ connection.close();
+ return 0;
+ } catch(const std::exception& error) {
+ std::cout << error.what() << std::endl;
+ }
+ return 1;
+}
+
+