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/* -*- c++ -*- */
/*
* Copyright 2013 Free Software Foundation, Inc.
*
* This file is part of GNU Radio
*
* GNU Radio 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.
*
* GNU Radio 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 GNU Radio; 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/thread/thread.h>
#include <gnuradio/io_signature.h>
#include <gnuradio/blocks/pdu.h>
#include <pmt/pmt.h>
#include <boost/lexical_cast.hpp>
#include "grgsm/misc_utils/udp_socket.h"
using boost::asio::ip::udp;
namespace gr {
namespace gsm {
udp_socket::udp_socket(
const std::string &remote_addr,
const std::string &src_port,
const std::string &dst_port,
size_t mtu)
{
// Resize receive buffer according to MTU value
d_rxbuf.resize(mtu);
// Resolve remote host address
udp::resolver resolver(d_io_service);
udp::resolver::query rx_query(
udp::v4(), remote_addr, src_port,
boost::asio::ip::resolver_query_base::passive);
udp::resolver::query tx_query(
udp::v4(), remote_addr, dst_port,
boost::asio::ip::resolver_query_base::passive);
d_udp_endpoint_rx = *resolver.resolve(rx_query);
d_udp_endpoint_tx = *resolver.resolve(tx_query);
// Create a socket
d_udp_socket.reset(new udp::socket(d_io_service, d_udp_endpoint_rx));
// Setup read handler
d_udp_socket->async_receive_from(
boost::asio::buffer(d_rxbuf), d_udp_endpoint_rx,
boost::bind(&udp_socket::handle_udp_read, this,
boost::asio::placeholders::error,
boost::asio::placeholders::bytes_transferred));
// Start server
d_thread = gr::thread::thread(
boost::bind(&udp_socket::run_io_service, this));
}
udp_socket::~udp_socket()
{
// Stop server
d_io_service.stop();
d_thread.interrupt();
d_thread.join();
}
void
udp_socket::run_io_service(void)
{
d_io_service.run();
}
void
udp_socket::udp_send(uint8_t *data, size_t len)
{
d_udp_socket->send_to(
boost::asio::buffer(data, len),
d_udp_endpoint_tx);
}
void
udp_socket::handle_udp_read(
const boost::system::error_code& error,
size_t bytes_transferred)
{
if (error)
return;
// Call incoming data handler
if (udp_rx_handler != NULL)
udp_rx_handler((uint8_t *) &d_rxbuf[0], bytes_transferred);
d_udp_socket->async_receive_from(
boost::asio::buffer(d_rxbuf), d_udp_endpoint_rx,
boost::bind(&udp_socket::handle_udp_read, this,
boost::asio::placeholders::error,
boost::asio::placeholders::bytes_transferred));
}
} /* namespace gsm */
}/* namespace gr */
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