1 files changed, 132 insertions, 0 deletions
diff --git a/gr-zeromq/lib/req_msg_source_impl.cc b/gr-zeromq/lib/req_msg_source_impl.cc
new file mode 100644
index 0000000000..2dda15208f
--- /dev/null
+++ b/gr-zeromq/lib/req_msg_source_impl.cc
@@ -0,0 +1,132 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2013,2014 Free Software Foundation, Inc.
+ *
+ * This file is part of GNU Radio.
+ *
+ * This is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3, or (at your option)
+ * any later version.
+ *
+ * This software is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this software; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <gnuradio/io_signature.h>
+#include "req_msg_source_impl.h"
+#include "tag_headers.h"
+
+namespace gr {
+  namespace zeromq {
+
+    req_msg_source::sptr
+    req_msg_source::make(char *address, int timeout)
+    {
+      return gnuradio::get_initial_sptr
+        (new req_msg_source_impl(address, timeout));
+    }
+
+    req_msg_source_impl::req_msg_source_impl(char *address, int timeout)
+      : gr::sync_block("req_msg_source",
+                       gr::io_signature::make(0, 0, 0),
+                       gr::io_signature::make(0, 0, 0)),
+       d_timeout(timeout)
+    {
+      int major, minor, patch;
+      zmq::version (&major, &minor, &patch);
+      if (major < 3) {
+        d_timeout = timeout*1000;
+      }
+      d_context = new zmq::context_t(1);
+      d_socket = new zmq::socket_t(*d_context, ZMQ_REQ);
+      int time = 0;
+      d_socket->setsockopt(ZMQ_LINGER, &time, sizeof(time));
+      d_socket->connect (address);
+
+      message_port_register_out(pmt::mp("out"));
+    }
+
+    req_msg_source_impl::~req_msg_source_impl()
+    {
+      d_socket->close();
+      delete d_socket;
+      delete d_context;
+    }
+
+    bool req_msg_source_impl::start(){
+      d_finished = false;
+      d_thread = new boost::thread( boost::bind( &req_msg_source_impl::readloop , this ) );
+      return true;
+    }
+
+    bool req_msg_source_impl::stop(){
+      d_finished = true;
+      d_thread->join();
+      return true;
+    }
+
+    void req_msg_source_impl::readloop(){
+      while(!d_finished){
+        //std::cout << "readloop\n";
+  
+        zmq::pollitem_t itemsout[] = { { *d_socket, 0, ZMQ_POLLOUT, 0 } };
+        zmq::poll (&itemsout[0], 1, d_timeout);
+  
+        //  If we got a reply, process
+        if (itemsout[0].revents & ZMQ_POLLOUT) {
+          // Request data, FIXME non portable?
+          int nmsg = 1;
+          zmq::message_t request(sizeof(int));
+          memcpy ((void *) request.data (), &nmsg, sizeof(int));
+          d_socket->send(request);
+          //std::cout << "sent request...\n";
+        }
+
+        zmq::pollitem_t items[] = { { *d_socket, 0, ZMQ_POLLIN, 0 } };
+        zmq::poll (&items[0], 1, d_timeout);
+        //std::cout << "rx response...\n";
+
+        //  If we got a reply, process
+        if (items[0].revents & ZMQ_POLLIN) {
+            //std::cout << "rx response... got data\n";
+
+            // Receive data
+            zmq::message_t msg;
+            d_socket->recv(&msg);
+
+            //std::cout << "got msg...\n";
+
+            std::string buf(static_cast<char*>(msg.data()), msg.size());
+            std::stringbuf sb(buf);
+            pmt::pmt_t m = pmt::deserialize(sb);
+            //std::cout << m << "\n";
+            message_port_pub(pmt::mp("out"), m);
+
+          } else {
+            usleep(100);
+          }
+        }
+    }
+
+    int
+    req_msg_source_impl::work(int noutput_items,
+                          gr_vector_const_void_star &input_items,
+                          gr_vector_void_star &output_items)
+    {
+      return noutput_items;
+    }
+
+  } /* namespace zeromq */
+} /* namespace gr */