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-rw-r--r--node/ExternalSurface.hpp66
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diff --git a/node/ExternalSurface.hpp b/node/ExternalSurface.hpp
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--- a/node/ExternalSurface.hpp
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-/*
- * ZeroTier One - Network Virtualization Everywhere
- * Copyright (C) 2011-2015 ZeroTier, Inc.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
- * --
- *
- * ZeroTier may be used and distributed under the terms of the GPLv3, which
- * are available at: http://www.gnu.org/licenses/gpl-3.0.html
- *
- * If you would like to embed ZeroTier into a commercial application or
- * redistribute it in a modified binary form, please contact ZeroTier Networks
- * LLC. Start here: http://www.zerotier.com/
- */
-
-#ifndef ZT_EXTERNALSURFACE_HPP
-#define ZT_EXTERNALSURFACE_HPP
-
-#include "InetAddress.hpp"
-
-namespace ZeroTier {
-
-/**
- * Tracks changes to this peer's real world addresses
- */
-class ExternalSurface
-{
-public:
- ExternalSurface() {}
-
- /**
- * Revise our external surface image, return true if it changed
- *
- * @param remote Remote address as reflected by any trusted peer
- * @return True if our external surface has changed
- */
- inline bool update(const InetAddress &remote)
- throw()
- {
- const unsigned long idx = (remote.isV4() ? 0 : 2) | (remote.isLinkLocal() ? 1 : 0);
- if (_s[idx] != remote) {
- _s[idx] = remote;
- return true;
- }
- return false;
- }
-
-private:
- InetAddress _s[4]; // global v4, link-local v4, global v6, link-local v6
-};
-
-} // namespace ZeroTier
-
-#endif