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86 lines
2.8 KiB
86 lines
2.8 KiB
/*
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This file is part of cpp-ethereum.
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cpp-ethereum 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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cpp-ethereum 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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You should have received a copy of the GNU General Public License
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along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
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*/
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/** @file Network.h
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* @author Alex Leverington <nessence@gmail.com>
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* @author Gav Wood <i@gavwood.com>
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* @date 2014
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*/
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#pragma once
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#include <memory>
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#include <vector>
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#include <deque>
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#include <array>
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#include <libdevcore/RLP.h>
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#include <libdevcore/Guards.h>
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#include "Common.h"
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namespace ba = boost::asio;
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namespace bi = ba::ip;
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namespace dev
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{
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namespace p2p
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{
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struct NetworkPreferences
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{
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// Default Network Preferences
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NetworkPreferences(unsigned short lp = 30303): listenPort(lp) {}
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// Network Preferences with specific Listen IP
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NetworkPreferences(std::string const& l, unsigned short lp = 30303, bool u = true): publicIPAddress(), listenIPAddress(l), listenPort(lp), traverseNAT(u) {}
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// Network Preferences with intended Public IP
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NetworkPreferences(std::string const& publicIP, std::string const& l = std::string(), unsigned short lp = 30303, bool u = true): publicIPAddress(publicIP), listenIPAddress(l), listenPort(lp), traverseNAT(u) { if (!publicIPAddress.empty() && !isPublicAddress(publicIPAddress)) BOOST_THROW_EXCEPTION(InvalidPublicIPAddress()); }
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/// Addressing
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std::string publicIPAddress;
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std::string listenIPAddress;
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unsigned short listenPort = 30303;
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/// Preferences
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bool traverseNAT = true;
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bool discovery = true; // Discovery is activated with network.
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bool pin = false; // Only accept or connect to trusted peers.
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};
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/**
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* @brief Network Class
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* Static network operations and interface(s).
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*/
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class Network
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{
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public:
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/// @returns public and private interface addresses
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static std::set<bi::address> getInterfaceAddresses();
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/// Try to bind and listen on _listenPort, else attempt net-allocated port.
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static int tcp4Listen(bi::tcp::acceptor& _acceptor, NetworkPreferences const& _netPrefs);
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/// Return public endpoint of upnp interface. If successful o_upnpifaddr will be a private interface address and endpoint will contain public address and port.
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static bi::tcp::endpoint traverseNAT(std::set<bi::address> const& _ifAddresses, unsigned short _listenPort, bi::address& o_upnpInterfaceAddr);
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/// Resolve "host:port" string as TCP endpoint. Returns unspecified endpoint on failure.
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static bi::tcp::endpoint resolveHost(std::string const& _host);
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};
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}
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}
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