mirror of
https://github.com/zerotier/ZeroTierOne.git
synced 2024-12-27 00:21:05 +00:00
104 lines
2.8 KiB
C++
104 lines
2.8 KiB
C++
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/*
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* ZeroTier One - Global Peer to Peer Ethernet
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* Copyright (C) 2012-2013 ZeroTier Networks LLC
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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 3 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, see <http://www.gnu.org/licenses/>.
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*
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* --
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*
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* ZeroTier may be used and distributed under the terms of the GPLv3, which
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* are available at: http://www.gnu.org/licenses/gpl-3.0.html
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*
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* If you would like to embed ZeroTier into a commercial application or
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* redistribute it in a modified binary form, please contact ZeroTier Networks
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* LLC. Start here: http://www.zerotier.com/
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*/
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#ifndef _ZT_UDPSOCKET_HPP
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#define _ZT_UDPSOCKET_HPP
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#include <stdexcept>
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#include "Thread.hpp"
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#include "InetAddress.hpp"
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#include "Mutex.hpp"
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namespace ZeroTier {
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/**
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* A local UDP socket
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*
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* The socket listens in a background thread and sends packets to Switch.
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*/
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class UdpSocket : protected Thread
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{
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public:
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/**
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* Create and bind a local UDP socket
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*
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* @param localPort Local port to listen to
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* @param ipv6 If true, bind this as an IPv6 socket, otherwise IPv4
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* @param packetHandler Function to call when packets are read
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* @param arg First argument (after self) to function
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* @throws std::runtime_error Unable to bind
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*/
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UdpSocket(
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int localPort,
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bool ipv6,
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void (*packetHandler)(UdpSocket *,void *,const InetAddress &,const void *,unsigned int),
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void *arg)
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throw(std::runtime_error);
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virtual ~UdpSocket();
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/**
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* @return Locally bound port
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*/
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inline int localPort() const throw() { return _localPort; }
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/**
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* @return True if this is an IPv6 socket
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*/
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inline bool v6() const throw() { return _v6; }
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/**
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* Send a packet
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*
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* Attempt to send V6 on a V4 or V4 on a V6 socket will return false.
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*
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* @param to Destination IP/port
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* @param data Data to send
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* @param len Length of data in bytes
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* @param hopLimit IP hop limit for UDP packet or -1 for max (max: 255)
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* @return True if packet successfully sent to link layer
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*/
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bool send(const InetAddress &to,const void *data,unsigned int len,int hopLimit)
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throw();
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protected:
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virtual void main()
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throw();
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private:
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void (*_packetHandler)(UdpSocket *,void *,const InetAddress &,const void *,unsigned int);
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void *_arg;
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int _localPort;
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int _sock;
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bool _v6;
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Mutex _sendLock;
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};
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} // namespace ZeroTier
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#endif
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