mirror of
https://github.com/zerotier/ZeroTierOne.git
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100 lines
2.8 KiB
C++
100 lines
2.8 KiB
C++
/*
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* ZeroTier One - Global Peer to Peer Ethernet
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* Copyright (C) 2011-2014 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_SOCKET_HPP
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#define ZT_SOCKET_HPP
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#include "Constants.hpp"
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#include "InetAddress.hpp"
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#include "AtomicCounter.hpp"
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#include "SharedPtr.hpp"
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#include "NonCopyable.hpp"
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/**
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* Maximum discrete message length supported by all socket types
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*/
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#define ZT_SOCKET_MAX_MESSAGE_LEN 2048
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namespace ZeroTier {
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class Socket;
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/**
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* Base class for transport-layer socket implementations
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*/
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class Socket : NonCopyable
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{
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friend class SharedPtr<Socket>;
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public:
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enum Type
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{
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ZT_SOCKET_TYPE_UDP_V4 = 1,
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ZT_SOCKET_TYPE_UDP_V6 = 2,
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ZT_SOCKET_TYPE_TCP_IN = 3, // incoming connection accepted from listen socket
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ZT_SOCKET_TYPE_TCP_OUT = 4, // outgoing connection to remote endpoint
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ZT_SOCKET_TYPE_ETHERNET = 5 // unused, for future SDN backplane support
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};
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virtual ~Socket() {}
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/**
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* @return Socket type
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*/
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inline Type type() const throw() { return _type; }
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/**
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* @return True if this is a UDP socket
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*/
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inline bool udp() const throw() { return ((_type == ZT_SOCKET_TYPE_UDP_V4)||(_type == ZT_SOCKET_TYPE_UDP_V6)); }
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/**
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* @return True if this is a TCP socket
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*/
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inline bool tcp() const throw() { return ((_type == ZT_SOCKET_TYPE_TCP_IN)||(_type == ZT_SOCKET_TYPE_TCP_OUT)); }
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/**
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* Send a ZeroTier message packet
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*
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* @param to Destination address (ignored in connected TCP sockets)
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* @param msg Message data
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* @param msglen Message length (max 16384 bytes)
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* @return True if send appears successful on our end, false if e.g. address type unreachable from this socket
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*/
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virtual bool send(const InetAddress &to,const void *msg,unsigned int msglen) = 0;
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protected:
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Socket(const Type &t) : _type(t) {}
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Type _type;
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AtomicCounter __refCount;
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};
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} // namespace ZeroTier
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#endif
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