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//
// 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 <boost/assign/list_of.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 boost::asio::const_buffer &buff){
std::vector<boost::asio::const_buffer> buffs = boost::assign::list_of(buff);
send(buffs);
}
uhd::shared_iovec uhd::transport::udp::recv(void){
//allocate a buffer for the number of bytes available (could be zero)
uhd::shared_iovec iov(_socket->available());
//call recv only if data is available
if (iov.len != 0){
_socket->receive_from(
boost::asio::buffer(iov.base, iov.len),
_sender_endpoint
);
}
return iov;
}
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