From e2044e13ec4ad94e9739402257134abd92cf1521 Mon Sep 17 00:00:00 2001
From: Josh Blum <josh@joshknows.com>
Date: Tue, 9 Feb 2010 17:45:35 -0800
Subject: added transport directory and udp transport

---
 lib/transport/udp.cpp | 65 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 65 insertions(+)
 create mode 100644 lib/transport/udp.cpp

(limited to 'lib/transport/udp.cpp')

diff --git a/lib/transport/udp.cpp b/lib/transport/udp.cpp
new file mode 100644
index 000000000..5b221551b
--- /dev/null
+++ b/lib/transport/udp.cpp
@@ -0,0 +1,65 @@
+//
+// Copyright 2010 Ettus Research LLC
+//
+// This program 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 of the License, or
+// (at your option) any later version.
+//
+// This program 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 program.  If not, see <http://www.gnu.org/licenses/>.
+//
+
+#include <uhd/transport/udp.hpp>
+#include <boost/format.hpp>
+#include <iostream>
+
+uhd::transport::udp::udp(const std::string &addr, const std::string &port, bool bcast){
+    //std::cout << boost::format("Creating udp transport for %s %s") % addr % port << std::endl;
+
+    // resolve the address
+    boost::asio::ip::udp::resolver resolver(_io_service);
+    boost::asio::ip::udp::resolver::query query(boost::asio::ip::udp::v4(), addr, port);
+    _receiver_endpoint = *resolver.resolve(query);
+
+    // Create and open the socket
+    _socket = new boost::asio::ip::udp::socket(_io_service);
+    _socket->open(boost::asio::ip::udp::v4());
+
+    if (bcast){
+        // Allow broadcasting
+        boost::asio::socket_base::broadcast option(true);
+        _socket->set_option(option);
+    }
+
+}
+
+uhd::transport::udp::~udp(void){
+    delete _socket;
+}
+
+void uhd::transport::udp::send(const std::vector<boost::asio::const_buffer> &buffs){
+    _socket->send_to(buffs, _receiver_endpoint);
+}
+
+void uhd::transport::udp::send(const void *buff, size_t len){
+    _socket->send_to(boost::asio::buffer(buff, len), _receiver_endpoint);
+}
+
+const boost::asio::const_buffer uhd::transport::udp::recv(void){
+    //recv if data is available
+    if (_socket->available()){
+        size_t len = _socket->receive_from(
+            boost::asio::buffer(_recv_buff, sizeof(_recv_buff)),
+            _sender_endpoint
+        );
+        return boost::asio::buffer(_recv_buff, len);
+    }
+    //return an empty buffer
+    return boost::asio::buffer(_recv_buff, 0);
+}
-- 
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