Add REQ-REP zmq/nn sockets to FairMQ together with a little example program.

Also includes example of using boost::program_options.

fairmq/examples/req-rep/FairMQExampleServer.cxx

@@ -0,0 +1,69 @@
+/********************************************************************************
+ *    Copyright (C) 2014 GSI Helmholtzzentrum fuer Schwerionenforschung GmbH    *
+ *                                                                              *
+ *              This software is distributed under the terms of the             * 
+ *         GNU Lesser General Public Licence version 3 (LGPL) version 3,        *  
+ *                  copied verbatim in the file "LICENSE"                       *
+ ********************************************************************************/
+/**
+ * FairMQExampleServer.cxx
+ *
+ * @since 2014-10-10
+ * @author A. Rybalchenko
+ */
+
+#include <boost/thread.hpp>
+#include <boost/bind.hpp>
+
+#include "FairMQExampleServer.h"
+#include "FairMQLogger.h"
+
+using namespace std;
+
+FairMQExampleServer::FairMQExampleServer()
+{
+}
+
+void FairMQExampleServer::CustomCleanup(void *data, void *hint)
+{
+    delete (string*)hint;
+}
+
+void FairMQExampleServer::Run()
+{
+    // boost::thread rateLogger(boost::bind(&FairMQDevice::LogSocketRates, this));
+
+    while (fState == RUNNING)
+    {
+        boost::this_thread::sleep(boost::posix_time::milliseconds(1000));
+
+        FairMQMessage* request = fTransportFactory->CreateMessage();
+
+        fPayloadInputs->at(0)->Receive(request);
+
+        LOG(INFO) << "Received request from client: \"" << string(static_cast<char*>(request->GetData()), request->GetSize()) << "\"";
+
+        string* text = new string("Thank you for the \"" + string(static_cast<char*>(request->GetData()), request->GetSize()) + "\"!");
+
+        delete request;
+
+        LOG(INFO) << "Sending reply to client.";
+
+        FairMQMessage* reply = fTransportFactory->CreateMessage(const_cast<char*>(text->c_str()), text->length(), CustomCleanup, text);
+
+        fPayloadInputs->at(0)->Send(reply);
+    }
+
+    // rateLogger.interrupt();
+    // rateLogger.join();
+
+    FairMQDevice::Shutdown();
+
+    boost::lock_guard<boost::mutex> lock(fRunningMutex);
+    fRunningFinished = true;
+    fRunningCondition.notify_one();
+}
+
+FairMQExampleServer::~FairMQExampleServer()
+{
+}