added transport directory and udp transport

3 files changed, 98 insertions, 0 deletions

diff --git a/lib/transport/.gitignore b/lib/transport/.gitignore
new file mode 100644
index 000000000..b336cc7ce
--- /dev/null
+++ b/lib/transport/.gitignore
@@ -0,0 +1,2 @@
+/Makefile
+/Makefile.in
diff --git a/lib/transport/Makefile.am b/lib/transport/Makefile.am
new file mode 100644
index 000000000..93e1676bc
--- /dev/null
+++ b/lib/transport/Makefile.am
@@ -0,0 +1,31 @@
+#
+# 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 $(top_srcdir)/Makefile.common
+
+SUBDIRS =
+
+AM_CPPFLAGS = $(GENERAL_CPPFLAGS)
+
+lib_LTLIBRARIES = lib.la
+
+lib_la_SOURCES = \
+	udp.cpp
+
+lib_la_LIBADD = $(GENERAL_LDDFLAGS)
+
+noinst_HEADERS =
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);
+}