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a/libupnpp/discovery.hxx b/libupnpp/discovery.hxx
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     * We need a separate thread to process the messages coming up
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     * We need a separate thread to process the messages coming up
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     * from libupnp, because some of them will in turn trigger other
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     * from libupnp, because some of them will in turn trigger other
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     * calls to libupnp, and this must not be done from the libupnp
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     * calls to libupnp, and this must not be done from the libupnp
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     * thread context which reported the initial message.
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     * thread context which reported the initial message.
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     */
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     */
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    static UPnPDeviceDirectory *getTheDir(time_t search_window = 1);
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    static UPnPDeviceDirectory *getTheDir(time_t search_window = 3);
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    /** Clean up before exit. Do call this.*/
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    /** Clean up before exit. Do call this.*/
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    static void terminate();
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    static void terminate();
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    typedef std::function<bool (const UPnPDeviceDesc&, 
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    typedef std::function<bool (const UPnPDeviceDesc&,