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diff --git a/control/IpcConnection.hpp b/control/IpcConnection.hpp
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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/
+ */
+
+#ifndef ZT_IPCCONNECTION_HPP
+#define ZT_IPCCONNECTION_HPP
+
+#include "../node/Constants.hpp"
+#include "../node/Thread.hpp"
+#include "../node/NonCopyable.hpp"
+#include "../node/Mutex.hpp"
+
+#ifdef __WINDOWS__
+#include <WinSock2.h>
+#include <Windows.h>
+#endif
+
+namespace ZeroTier {
+
+class IpcListener;
+
+/**
+ * Interprocess communication connection
+ */
+class IpcConnection : NonCopyable
+{
+	friend class IpcListener;
+
+public:
+	enum EventType
+	{
+		IPC_EVENT_COMMAND,
+		IPC_EVENT_NEW_CONNECTION,
+		IPC_EVENT_CONNECTION_CLOSED
+	};
+
+	/**
+	 * Connect to an IPC endpoint
+	 *
+	 * @param endpoint Endpoint path
+	 * @param commandHandler Command handler function
+	 * @param arg First argument to command handler
+	 * @throws std::runtime_error Unable to connect
+	 */
+	IpcConnection(const char *endpoint,void (*commandHandler)(void *,IpcConnection *,IpcConnection::EventType,const char *),void *arg);
+	~IpcConnection();
+
+	/**
+	 * @param format Printf format string
+	 * @param ... Printf arguments
+	 */
+	void printf(const char *format,...);
+
+	void threadMain()
+		throw();
+
+private:
+	// Used by IpcListener to construct incoming connections
+#ifdef __WINDOWS__
+	IpcConnection(HANDLE s,void (*commandHandler)(void *,IpcConnection *,IpcConnection::EventType,const char *),void *arg);
+#else
+	IpcConnection(int s,void (*commandHandler)(void *,IpcConnection *,IpcConnection::EventType,const char *),void *arg);
+#endif
+
+	void (*_handler)(void *,IpcConnection *,IpcConnection::EventType,const char *);
+	void *_arg;
+#ifdef __WINDOWS__
+	HANDLE _sock;
+	std::string _writeBuf;
+	bool _incoming;
+#else
+	volatile int _sock;
+#endif
+	Mutex _writeLock;
+	Thread _thread;
+	volatile bool _run;
+	volatile bool _running;
+};
+
+} // namespace ZeroTier
+
+#endif