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/* -*- c++ -*- */
/*
* Copyright 2012 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 <gr_socket_pdu.h>
#include <gr_io_signature.h>
#include <cstdio>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdexcept>
#include <string.h>
#include <iostream>
#include <gr_pdu.h>
#include <boost/format.hpp>
// public constructor that returns a shared_ptr
gr_socket_pdu_sptr
gr_make_socket_pdu (std::string type, std::string addr, std::string port, int MTU)
{
return gnuradio::get_initial_sptr(new gr_socket_pdu(type,addr,port,MTU));
}
gr_socket_pdu::gr_socket_pdu (std::string type, std::string addr, std::string port, int MTU)
: gr_stream_pdu_base(MTU)
{
if( (type == "TCP_SERVER") || (type == "TCP_CLIENT")){
boost::asio::ip::tcp::resolver resolver(_io_service);
boost::asio::ip::tcp::resolver::query query(boost::asio::ip::tcp::v4(), addr, port);
_tcp_endpoint = *resolver.resolve(query);
}
if( (type == "UDP_SERVER") || (type == "UDP_CLIENT")){
boost::asio::ip::udp::resolver resolver(_io_service);
boost::asio::ip::udp::resolver::query query(boost::asio::ip::udp::v4(), addr, port);
if( (type == "UDP_SERVER") ){
_udp_endpoint = *resolver.resolve(query);
} else {
_udp_endpoint_other = *resolver.resolve(query);
}
}
// register ports
message_port_register_out(pmt::mp("pdus"));
message_port_register_in(pmt::mp("pdus"));
// set up socketry
if (type == "TCP_SERVER"){
_acceptor_tcp.reset(new boost::asio::ip::tcp::acceptor(_io_service, _tcp_endpoint));
_acceptor_tcp->set_option(boost::asio::ip::tcp::acceptor::reuse_address(true));
start_tcp_accept();
// bind tcp server send handler
set_msg_handler(pmt::mp("pdus"), boost::bind(&gr_socket_pdu::tcp_server_send, this, _1));
} else if(type =="TCP_CLIENT"){
boost::system::error_code error = boost::asio::error::host_not_found;
_tcp_socket.reset(new boost::asio::ip::tcp::socket(_io_service));
_tcp_socket->connect(_tcp_endpoint, error);
if(error){
throw boost::system::system_error(error);
}
set_msg_handler(pmt::mp("pdus"), boost::bind(&gr_socket_pdu::tcp_client_send, this, _1));
_tcp_socket->async_read_some(
boost::asio::buffer(rxbuf),
boost::bind(&gr_socket_pdu::handle_tcp_read, this, boost::asio::placeholders::error, boost::asio::placeholders::bytes_transferred));
} else if(type =="UDP_SERVER"){
_udp_socket.reset(new boost::asio::ip::udp::socket(_io_service, _udp_endpoint));
_udp_socket->async_receive_from( boost::asio::buffer(rxbuf), _udp_endpoint_other,
boost::bind(&gr_socket_pdu::handle_udp_read, this,
boost::asio::placeholders::error,
boost::asio::placeholders::bytes_transferred));
set_msg_handler(pmt::mp("pdus"), boost::bind(&gr_socket_pdu::udp_send, this, _1));
} else if(type =="UDP_CLIENT"){
_udp_socket.reset(new boost::asio::ip::udp::socket(_io_service, _udp_endpoint));
_udp_socket->async_receive_from( boost::asio::buffer(rxbuf), _udp_endpoint_other,
boost::bind(&gr_socket_pdu::handle_udp_read, this,
boost::asio::placeholders::error,
boost::asio::placeholders::bytes_transferred));
set_msg_handler(pmt::mp("pdus"), boost::bind(&gr_socket_pdu::udp_send, this, _1));
} else {
throw std::runtime_error("unknown socket type!");
}
// start thread for io_service
d_thread = boost::shared_ptr<boost::thread>(new boost::thread(boost::bind(&gr_socket_pdu::run_io_service, this)));
d_started = true;
}
void tcp_connection::handle_read(const boost::system::error_code& error/*error*/, size_t bytes_transferred)
{
if(!error)
{
pmt::pmt_t vector = pmt::pmt_init_u8vector(bytes_transferred, (const uint8_t*)&buf[0]);
pmt::pmt_t pdu = pmt::pmt_cons( pmt::PMT_NIL, vector);
d_block->message_port_pub( pmt::mp("pdus"), pdu );
socket_.async_read_some(
boost::asio::buffer(buf),
boost::bind(&tcp_connection::handle_read, this, boost::asio::placeholders::error, boost::asio::placeholders::bytes_transferred));
} else {
std::cout << "error occurred\n";
}
}
void gr_socket_pdu::tcp_server_send(pmt::pmt_t msg){
pmt::pmt_t vector = pmt::pmt_cdr(msg);
for(size_t i=0; i<d_tcp_connections.size(); i++){
d_tcp_connections[i]->send(vector);
}
}
void gr_socket_pdu::tcp_client_send(pmt::pmt_t msg){
pmt::pmt_t vector = pmt::pmt_cdr(msg);
size_t len = pmt::pmt_length(vector);
size_t offset(0);
boost::array<char, 10000> txbuf;
memcpy(&txbuf[0], pmt::pmt_uniform_vector_elements(vector, offset), len);
_tcp_socket->send(boost::asio::buffer(txbuf,len));
}
void gr_socket_pdu::udp_send(pmt::pmt_t msg){
pmt::pmt_t vector = pmt::pmt_cdr(msg);
size_t len = pmt::pmt_length(vector);
size_t offset(0);
boost::array<char, 10000> txbuf;
memcpy(&txbuf[0], pmt::pmt_uniform_vector_elements(vector, offset), len);
if(_udp_endpoint_other.address().to_string() != "0.0.0.0")
_udp_socket->send_to(boost::asio::buffer(txbuf,len), _udp_endpoint_other);
}
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