mirror of https://github.com/gnss-sdr/gnss-sdr
124 lines
3.5 KiB
C++
124 lines
3.5 KiB
C++
/*!
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* \file tcp_communication.cc
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* \brief Implementation of the TCP communication class
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* \author David Pubill, 2011. dpubill(at)cttc.es
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*
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*
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* -------------------------------------------------------------------------
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*
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* Copyright (C) 2010-2012 (see AUTHORS file for a list of contributors)
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*
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* GNSS-SDR is a software defined Global Navigation
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* Satellite Systems receiver
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*
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* This file is part of GNSS-SDR.
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*
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* GNSS-SDR is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* at your option) any later version.
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*
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* GNSS-SDR is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
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*
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* -------------------------------------------------------------------------
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*/
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#include "tcp_packet_data.h"
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#include "tcp_communication.h"
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#include <iostream>
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#include <string>
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#define NUM_TX_VARIABLES 7
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#define NUM_RX_VARIABLES 3
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tcp_communication::tcp_communication() : tcp_socket_(io_service_)
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{}
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tcp_communication::~tcp_communication()
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{}
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int tcp_communication::listen_tcp_connection(size_t d_port_)
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{
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try
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{
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// Specify IP type and port
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boost::asio::ip::tcp::endpoint endpoint(boost::asio::ip::tcp::v4(), d_port_);
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boost::asio::ip::tcp::acceptor acceptor(io_service_, endpoint);
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// Reuse the IP address for each connection
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acceptor.set_option(boost::asio::ip::tcp::acceptor::reuse_address(true));
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std::cout << "Server ready on port " << d_port_ << std::endl;
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// Listen for a connection and accept it
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acceptor.listen(12);
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acceptor.accept(tcp_socket_);
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std::cout << "Socket accepted on port " << d_port_ << std::endl;
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}
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catch(std::exception& e)
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{
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std::cerr << "Exception: " << e.what() << std::endl;
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}
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return false;
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}
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void tcp_communication::send_receive_tcp_packet(boost::array<float, NUM_TX_VARIABLES> buf, tcp_packet_data *tcp_data_)
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{
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int controlc = 0;
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boost::array<float, NUM_RX_VARIABLES> readbuf;
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float d_control_id_ = buf.data()[6];
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try
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{
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// Send a TCP packet
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tcp_socket_.write_some(boost::asio::buffer(buf));
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// Read the received TCP packet
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tcp_socket_.read_some(boost::asio::buffer(readbuf));
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// Recover the variables received
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tcp_data_->proc_pack_code_error = readbuf.data()[0];
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tcp_data_->proc_pack_carr_error = readbuf.data()[1];
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// Control. The GNSS-SDR program ends if an error in a TCP packet is detected.
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if (d_control_id_ != readbuf.data()[2])
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{
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throw "Packet error!";
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}
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}
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catch(std::exception& e)
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{
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std::cerr << "Exception: " << e.what() << ". Please press Ctrl+C to end the program." << std::endl;
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std::cin >> controlc;
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}
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return;
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}
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void tcp_communication::close_tcp_connection(size_t d_port_)
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{
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// Close the TCP connection
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tcp_socket_.close();
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std::cout << "Socket closed on port " << d_port_ << std::endl;
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return;
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}
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