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diff --git a/timeout_handler.hpp b/timeout_handler.hpp
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+//
+// VMime library (http://www.vmime.org)
+// Copyright (C) 2002 Vincent Richard <vincent@vmime.org>
+//
+// 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, write to the Free Software Foundation, Inc.,
+// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+//
+// Linking this library statically or dynamically with other modules is making
+// a combined work based on this library.  Thus, the terms and conditions of
+// the GNU General Public License cover the whole combination.
+//
+
+/* modified from defaultTimeoutHandler.hpp */
+
+#ifndef VMIME_NET_PARAMETERIZABLETTIMEOUTHANDLER_HPP_INCLUDED
+#define VMIME_NET_PARAMETERIZABLETTIMEOUTHANDLER_HPP_INCLUDED
+
+
+#include "vmime/config.hpp"
+#include "vmime/net/timeoutHandler.hpp"
+
+#include <ctime>
+
+
+/** A parameterized timeout handler for messaging services. The default action
+  * is to throw a exceptions::operation_timed_out exception when an
+  * operation is blocked for more than the specified number of seconds.
+  */
+class parameterized_timeout_handler : public vmime::net::timeoutHandler {
+
+public:
+
+	parameterized_timeout_handler(int timeout_seconds);
+	~parameterized_timeout_handler();
+
+	bool isTimeOut();
+	void resetTimeOut();
+	bool handleTimeOut();
+
+private:
+
+	time_t m_startTime;
+	int timeout_seconds;
+};
+
+/** A class that creates parameterized timeout handlers.
+  */
+class parameterized_timeout_handler_factory :
+	public vmime::net::timeoutHandlerFactory {
+
+public:
+
+	parameterized_timeout_handler_factory(int timeout_seconds);
+	~parameterized_timeout_handler_factory();
+
+	vmime::shared_ptr <vmime::net::timeoutHandler> create();
+
+private:
+
+	int timeout_seconds;
+};
+
+
+#endif // VMIME_NET_PARAMETERIZABLETTIMEOUTHANDLER_HPP_INCLUDED