Update libwebsockets to 3.1 (plus UWP patch)

thirdparty/libwebsockets/lib/event-libs/private.h

@@ -0,0 +1,74 @@
+/*
+ * libwebsockets - small server side websockets and web server implementation
+ *
+ * Copyright (C) 2010 - 2018 Andy Green <andy@warmcat.com>
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Lesser General Public
+ *  License as published by the Free Software Foundation:
+ *  version 2.1 of the License.
+ *
+ *  This library 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
+ *  Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public
+ *  License along with this library; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ *  MA  02110-1301  USA
+ *
+ *  This is included from core/private.h
+ */
+
+struct lws_event_loop_ops {
+	const char *name;
+	/* event loop-specific context init during context creation */
+	int (*init_context)(struct lws_context *context,
+			    const struct lws_context_creation_info *info);
+	/* called during lws_destroy_context */
+	int (*destroy_context1)(struct lws_context *context);
+	/* called during lws_destroy_context2 */
+	int (*destroy_context2)(struct lws_context *context);
+	/* init vhost listening wsi */
+	int (*init_vhost_listen_wsi)(struct lws *wsi);
+	/* init the event loop for a pt */
+	int (*init_pt)(struct lws_context *context, void *_loop, int tsi);
+	/* called at end of first phase of close_free_wsi()  */
+	int (*wsi_logical_close)(struct lws *wsi);
+	/* return nonzero if client connect not allowed  */
+	int (*check_client_connect_ok)(struct lws *wsi);
+	/* close handle manually  */
+	void (*close_handle_manually)(struct lws *wsi);
+	/* event loop accept processing  */
+	int (*accept)(struct lws *wsi);
+	/* control wsi active events  */
+	void (*io)(struct lws *wsi, int flags);
+	/* run the event loop for a pt */
+	void (*run_pt)(struct lws_context *context, int tsi);
+	/* called before pt is destroyed */
+	void (*destroy_pt)(struct lws_context *context, int tsi);
+	/* called just before wsi is freed  */
+	void (*destroy_wsi)(struct lws *wsi);
+
+	unsigned int periodic_events_available:1;
+};
+
+/* bring in event libs private declarations */
+
+#if defined(LWS_WITH_POLL)
+#include "event-libs/poll/private.h"
+#endif
+
+#if defined(LWS_WITH_LIBUV)
+#include "event-libs/libuv/private.h"
+#endif
+
+#if defined(LWS_WITH_LIBEVENT)
+#include "event-libs/libevent/private.h"
+#endif
+
+#if defined(LWS_WITH_LIBEV)
+#include "event-libs/libev/private.h"
+#endif
+