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diff --git a/include/ZeroTierOne.h b/include/ZeroTierOne.h
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+/*
+ * ZeroTier One - Global Peer to Peer Ethernet
+ * Copyright (C) 2011-2014  ZeroTier Networks LLC
+ *
+ * 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/
+ */
+
+/*
+ * This defines the external C API for ZeroTier One, the core network
+ * virtualization engine.
+ */
+
+#ifndef ZT_ZEROTIERONE_H
+#define ZT_ZEROTIERONE_H
+
+#include <stdint.h>
+
+/* ------------------------------------------------------------------------ */
+/* Query result buffers                                                     */
+/* ------------------------------------------------------------------------ */
+
+/**
+ * Node status result buffer
+ */
+struct ZT1_Node_Status
+{
+	/**
+	 * Public identity in string form
+	 */
+	char publicIdentity[256];
+
+	/**
+	 * ZeroTier address in 10-digit hex form
+	 */
+	char address[16];
+
+	/**
+	 * ZeroTier address in least significant 40 bits of 64-bit integer
+	 */
+	uint64_t rawAddress;
+
+	/**
+	 * Number of known peers (including supernodes)
+	 */
+	unsigned int knownPeers;
+
+	/**
+	 * Number of upstream supernodes
+	 */
+	unsigned int supernodes;
+
+	/**
+	 * Number of peers with active direct links
+	 */
+	unsigned int directlyConnectedPeers;
+
+	/**
+	 * Number of peers that have recently communicated with us
+	 */
+	unsigned int alivePeers;
+
+	/**
+	 * Success rate at establishing direct links (0.0 to 1.0, approximate)
+	 */
+	float directLinkSuccessRate;
+
+	/**
+	 * True if connectivity appears good
+	 */
+	bool online;
+
+	/**
+	 * True if running; all other fields are technically undefined if this is false
+	 */
+	bool running;
+};
+
+/**
+ * Physical address result buffer
+ */
+struct ZT1_Node_PhysicalAddress
+{
+	/**
+	 * Physical address type
+	 */
+	enum {
+		ZT1_Node_PhysicalAddress_TYPE_NULL = 0,     /* none/invalid */
+		ZT1_Node_PhysicalAddress_TYPE_IPV4 = 1,     /* 32-bit IPv4 address (and port) */
+		ZT1_Node_PhysicalAddress_TYPE_IPV6 = 2,     /* 128-bit IPv6 address (and port) */
+		ZT1_Node_PhysicalAddress_TYPE_ETHERNET = 3  /* 48-bit Ethernet MAC address */
+	} type;
+
+	/**
+	 * Address in raw binary form -- length depends on type
+	 */
+	unsigned char bits[16];
+
+	/**
+	 * Port or netmask bits (for IPV4 and IPV6)
+	 */
+	unsigned int port;
+
+	/**
+	 * Address in canonical human-readable form
+	 */
+	char ascii[64];
+
+	/**
+	 * Zone index identifier (thing after % on IPv6 link-local addresses only)
+	 */
+	char zoneIndex[16];
+};
+
+/**
+ * Network path result buffer
+ */
+struct ZT1_Node_PhysicalPath
+{
+	/**
+	 * Physical path type
+	 */
+	enum { /* These must be numerically the same as type in Path.hpp */
+		ZT1_Node_PhysicalPath_TYPE_NULL = 0,     /* none/invalid */
+		ZT1_Node_PhysicalPath_TYPE_UDP = 1,      /* UDP association */
+		ZT1_Node_PhysicalPath_TYPE_TCP_OUT = 2,  /* outgoing TCP tunnel using pseudo-SSL */
+		ZT1_Node_PhysicalPath_TYPE_TCP_IN = 3,   /* incoming TCP tunnel using pseudo-SSL */
+		ZT1_Node_PhysicalPath_TYPE_ETHERNET = 4  /* raw ethernet frames over trusted backplane */
+	} type;
+
+	/**
+	 * Physical address of endpoint
+	 */
+	struct ZT1_Node_PhysicalAddress address;
+
+	/**
+	 * Time since last send in milliseconds or -1 for never
+	 */
+	long lastSend;
+
+	/**
+	 * Time since last receive in milliseconds or -1 for never
+	 */
+	long lastReceive;
+
+	/**
+	 * Time since last ping in milliseconds or -1 for never
+	 */
+	long lastPing;
+
+	/**
+	 * Is path active/connected? Non-fixed active paths may be garbage collected over time.
+	 */
+	bool active;
+
+	/**
+	 * Is path fixed? (i.e. not learned, static)
+	 */
+	bool fixed;
+};
+
+/**
+ * Peer status result buffer
+ */
+struct ZT1_Node_Peer
+{
+	/**
+	 * Remote peer version: major.minor.revision (or empty if unknown)
+	 */
+	char remoteVersion[16];
+
+	/**
+	 * ZeroTier address of peer as 10-digit hex string
+	 */
+	char address[16];
+
+	/**
+	 * ZeroTier address in least significant 40 bits of 64-bit integer
+	 */
+	uint64_t rawAddress;
+
+	/**
+	 * Last measured latency in milliseconds or zero if unknown
+	 */
+	unsigned int latency;
+
+	/**
+	 * Array of network paths to peer
+	 */
+	struct ZT1_Node_PhysicalPath *paths;
+
+	/**
+	 * Number of paths (size of paths[])
+	 */
+	unsigned int numPaths;
+};
+
+/**
+ * List of peers
+ */
+struct ZT1_Node_PeerList
+{
+	struct ZT1_Node_Peer *peers;
+	unsigned int numPeers;
+};
+
+/**
+ * Network status result buffer
+ */
+struct ZT1_Node_Network
+{
+	/**
+	 * 64-bit network ID
+	 */
+	uint64_t nwid;
+
+	/**
+	 * 64-bit network ID in hex form
+	 */
+	char nwidHex[32];
+
+	/**
+	 * Short network name
+	 */
+	char name[256];
+
+	/**
+	 * Longer network description
+	 */
+	char description[4096];
+
+	/**
+	 * Device name (system-dependent)
+	 */
+	char device[256];
+
+	/**
+	 * Status code in string format
+	 */
+	char statusStr[64];
+
+	/**
+	 * Ethernet MAC address of this endpoint in string form
+	 */
+	char macStr[32];
+
+	/**
+	 * Ethernet MAC address of this endpoint on the network in raw binary form
+	 */
+	unsigned char mac[6];
+
+	/**
+	 * Age of configuration in milliseconds or -1 if never refreshed
+	 */
+	long configAge;
+
+	/**
+	 * Assigned layer-3 IPv4 and IPv6 addresses
+	 *
+	 * Note that PhysicalAddress also supports other address types, but this
+	 * list will only list IP address assignments. The port field will contain
+	 * the number of bits in the netmask -- e.g. 192.168.1.1/24.
+	 */
+	struct ZT1_Node_PhysicalAddress *ips;
+
+	/**
+	 * Number of layer-3 IPs (size of ips[])
+	 */
+	unsigned int numIps;
+
+	/**
+	 * Network status code
+	 */
+	enum { /* Must be same as Status in Network.hpp */
+		ZT1_Node_Network_INITIALIZING = 0,
+		ZT1_Node_Network_WAITING_FOR_FIRST_AUTOCONF = 1,
+		ZT1_Node_Network_OK = 2,
+		ZT1_Node_Network_ACCESS_DENIED = 3,
+		ZT1_Node_Network_NOT_FOUND = 4,
+		ZT1_Node_Network_INITIALIZATION_FAILED = 5,
+		ZT1_Node_Network_NO_MORE_DEVICES = 6
+	} status;
+
+	/**
+	 * True if traffic on network is enabled
+	 */
+	bool enabled;
+
+	/**
+	 * Is this a private network? If false, network lacks access control.
+	 */
+	bool isPrivate;
+};
+
+/**
+ * Return buffer for list of networks
+ */
+struct ZT1_Node_NetworkList
+{
+	struct ZT1_Node_Network *networks;
+	unsigned int numNetworks;
+};
+
+/* ------------------------------------------------------------------------ */
+/* ZeroTier One C API                                                       */
+/* ------------------------------------------------------------------------ */
+
+/* coming soon... */
+
+#endif