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127 lines
4.5 KiB
127 lines
4.5 KiB
/**
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* Digital Voice Modem - Host Software
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* GPLv2 Open Source. Use is subject to license terms.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* @package DVM / Host Software
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*
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*/
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//
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// Based on code from the MMDVMHost project. (https://github.com/g4klx/MMDVMHost)
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// Licensed under the GPLv2 License (https://opensource.org/licenses/GPL-2.0)
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//
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/*
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* Copyright (C) 2006-2016,2020 by Jonathan Naylor G4KLX
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*
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* This program 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 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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 this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#if !defined(__UDP_SOCKET_H__)
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#define __UDP_SOCKET_H__
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#include "Defines.h"
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#include <string>
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#if !defined(_WIN32) && !defined(_WIN64)
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#include <netdb.h>
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#include <sys/time.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <poll.h>
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#include <unistd.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <errno.h>
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#else
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#include <winsock2.h>
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#include <ws2tcpip.h>
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#endif
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#if !defined(UDP_SOCKET_MAX)
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#define UDP_SOCKET_MAX 1
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#endif
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enum IPMATCHTYPE {
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IMT_ADDRESS_AND_PORT,
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IMT_ADDRESS_ONLY
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};
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namespace network
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{
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// ---------------------------------------------------------------------------
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// Class Declaration
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// This class implements low-level routines to communicate over a UDP
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// network socket.
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// ---------------------------------------------------------------------------
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class HOST_SW_API UDPSocket {
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public:
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/// <summary>Initializes a new instance of the UDPSocket class.</summary>
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UDPSocket(const std::string& address, uint16_t port = 0U);
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/// <summary>Initializes a new instance of the UDPSocket class.</summary>
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UDPSocket(uint16_t port = 0U);
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/// <summary>Initializes a new instance of the UDPSocket class.</summary>
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~UDPSocket();
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/// <summary>Opens UDP socket connection.</summary>
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bool open(uint32_t af = AF_UNSPEC);
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/// <summary>Opens UDP socket connection.</summary>
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bool open(const sockaddr_storage& address);
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/// <summary>Opens UDP socket connection.</summary>
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bool open(const uint32_t index, const uint32_t af, const std::string& address, const uint16_t port);
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/// <summary>Read data from the UDP socket.</summary>
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int read(uint8_t* buffer, uint32_t length, sockaddr_storage& address, uint32_t& addrLen);
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/// <summary>Write data to the UDP socket.</summary>
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bool write(const uint8_t* buffer, uint32_t length, const sockaddr_storage& address, uint32_t addrLen);
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/// <summary>Closes the UDP socket connection.</summary>
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void close();
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/// <summary>Closes the UDP socket connection.</summary>
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void close(const uint32_t index);
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/// <summary></summary>
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static void startup();
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/// <summary></summary>
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static void shutdown();
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/// <summary>Helper to lookup a hostname and resolve it to an IP address.</summary>
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static int lookup(const std::string& hostName, uint16_t port, sockaddr_storage& address, uint32_t& addrLen);
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/// <summary>Helper to lookup a hostname and resolve it to an IP address.</summary>
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static int lookup(const std::string& hostName, uint16_t port, sockaddr_storage& address, uint32_t& addrLen, struct addrinfo& hints);
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/// <summary></summary>
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static bool match(const sockaddr_storage& addr1, const sockaddr_storage& addr2, IPMATCHTYPE type = IMT_ADDRESS_AND_PORT);
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/// <summary></summary>
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static std::string address(const sockaddr_storage& addr);
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/// <summary></summary>
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static bool isNone(const sockaddr_storage& addr);
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private:
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std::string m_address_save;
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uint16_t m_port_save;
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std::string m_address[UDP_SOCKET_MAX];
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uint16_t m_port[UDP_SOCKET_MAX];
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uint32_t m_af[UDP_SOCKET_MAX];
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int m_fd[UDP_SOCKET_MAX];
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uint32_t m_counter;
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};
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} // namespace network
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#endif // __UDP_SOCKET_H__
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