Merge commit '86cc97e55fe346502462284d2e636a2b3708163e' as 'Sources/OpenVPN3'

Sources/OpenVPN3/openvpn/apple/reach.hpp

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+//    OpenVPN -- An application to securely tunnel IP networks
+//               over a single port, with support for SSL/TLS-based
+//               session authentication and key exchange,
+//               packet encryption, packet authentication, and
+//               packet compression.
+//
+//    Copyright (C) 2012-2017 OpenVPN Inc.
+//
+//    This program is free software: you can redistribute it and/or modify
+//    it under the terms of the GNU Affero General Public License Version 3
+//    as published by the Free Software Foundation.
+//
+//    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 Affero General Public License for more details.
+//
+//    You should have received a copy of the GNU Affero General Public License
+//    along with this program in the COPYING file.
+//    If not, see <http://www.gnu.org/licenses/>.
+
+#ifndef OPENVPN_APPLECRYPTO_UTIL_REACH_H
+#define OPENVPN_APPLECRYPTO_UTIL_REACH_H
+
+// An interface to various network reachability implementations,
+// primarily for iOS.
+
+namespace openvpn {
+  struct ReachabilityInterface
+  {
+    enum Status {
+      NotReachable,
+      ReachableViaWiFi,
+      ReachableViaWWAN
+    };
+
+    virtual Status reachable() const = 0;
+    virtual bool reachableVia(const std::string& net_type) const = 0;
+    virtual std::string to_string() const = 0;
+    virtual ~ReachabilityInterface() {}
+  };
+}
+#endif