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diff --git a/indra/newview/llwlhandlers.h b/indra/newview/llwlhandlers.h
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+/** 
+ * @file llwlhandlers.h
+ * @brief Headers for classes in llwlhandlers.cpp
+ *
+ * $LicenseInfo:firstyear=2009&license=viewergpl$
+ * 
+ * Copyright (c) 2009, Linden Research, Inc.
+ * 
+ * Second Life Viewer Source Code
+ * The source code in this file ("Source Code") is provided by Linden Lab
+ * to you under the terms of the GNU General Public License, version 2.0
+ * ("GPL"), unless you have obtained a separate licensing agreement
+ * ("Other License"), formally executed by you and Linden Lab.  Terms of
+ * the GPL can be found in doc/GPL-license.txt in this distribution, or
+ * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
+ * 
+ * There are special exceptions to the terms and conditions of the GPL as
+ * it is applied to this Source Code. View the full text of the exception
+ * in the file doc/FLOSS-exception.txt in this software distribution, or
+ * online at
+ * http://secondlifegrid.net/programs/open_source/licensing/flossexception
+ * 
+ * By copying, modifying or distributing this software, you acknowledge
+ * that you have read and understood your obligations described above,
+ * and agree to abide by those obligations.
+ * 
+ * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
+ * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
+ * COMPLETENESS OR PERFORMANCE.
+ * $/LicenseInfo$
+ */
+
+#ifndef LL_LLWLHANDLERS_H
+#define LL_LLWLHANDLERS_H
+
+#include "llviewerprecompiledheaders.h"
+#include "llhttpclient.h"
+
+class LLEnvironmentRequest
+{
+	LOG_CLASS(LLEnvironmentRequest);
+public:
+	/// @return true if request was successfully sent
+	static bool initiate();
+
+private:
+	static void onRegionCapsReceived(const LLUUID& region_id);
+	static bool doRequest();
+};
+
+class LLEnvironmentRequestResponder: public LLHTTPClient::Responder
+{
+	LOG_CLASS(LLEnvironmentRequestResponder);
+public:
+	virtual void result(const LLSD& content);
+	virtual void error(U32 status, const std::string& reason);
+
+private:
+	friend class LLEnvironmentRequest;
+
+	LLEnvironmentRequestResponder();
+	static int sCount;
+	int mID;
+};
+
+class LLEnvironmentApply
+{
+	LOG_CLASS(LLEnvironmentApply);
+public:
+	/// @return true if request was successfully sent
+	static bool initiateRequest(const LLSD& content);
+
+private:
+	static clock_t sLastUpdate;
+	static clock_t UPDATE_WAIT_SECONDS;
+};
+
+class LLEnvironmentApplyResponder: public LLHTTPClient::Responder
+{
+	LOG_CLASS(LLEnvironmentApplyResponder);
+public:
+	/*
+	 * Expecting reply from sim in form of:
+	 * {
+	 *   regionID : uuid,
+	 *   messageID: uuid,
+	 *   success : true
+	 * }
+	 * or
+	 * {
+	 *   regionID : uuid,
+	 *   success : false,
+	 *   fail_reason : string
+	 * }
+	 */
+	virtual void result(const LLSD& content);
+
+	virtual void error(U32 status, const std::string& reason); // non-200 errors only
+
+private:
+	friend class LLEnvironmentApply;
+	
+	LLEnvironmentApplyResponder() {}
+};
+
+#endif // LL_LLWLHANDLERS_H