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+/** 
+ * @file lliohttpserver.h
+ * @brief Declaration of function for creating an HTTP wire server
+ * @see LLIOServerSocket, LLPumpIO
+ *
+ * Copyright (c) 2005-2007, Linden Research, Inc.
+ * 
+ * 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://secondlife.com/developers/opensource/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://secondlife.com/developers/opensource/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.
+ */
+
+#ifndef LL_LLIOHTTPSERVER_H
+#define LL_LLIOHTTPSERVER_H
+
+#include "llapr.h"
+#include "llchainio.h"
+#include "llhttpnode.h"
+
+class LLPumpIO;
+
+LLHTTPNode& LLCreateHTTPServer(apr_pool_t* pool, LLPumpIO& pump, U16 port);
+        /**< Creates an HTTP wire server on the pump for the given TCP port.
+         *
+         *   Returns the root node of the new server.  Add LLHTTPNode instances
+         *   to this root.
+         *
+         *   Nodes that return NULL for getProtocolHandler(), will use the
+         *   default handler that interprets HTTP on the wire and converts
+         *   it into calls to get(), put(), post(), del() with appropriate
+         *   LLSD arguments and results.
+         *
+         *   To have nodes that implement some other wire protocol (XML-RPC
+         *   for example), use the helper templates below.
+         */
+ 
+void LLCreateHTTPPipe(LLPumpIO::chain_t& chain, const LLHTTPNode& root);
+        /**< Create a pipe on the chain that handles HTTP requests.
+         *   The requests are served by the node tree given at root.
+         *
+         *   This is primarily useful for unit testing.
+         */
+
+/* @name Helper Templates
+ *
+ * These templates make it easy to create nodes that use thier own protocol
+ * handlers rather than the default.  Typically, you subclass LLIOPipe to
+ * implement the protocol, and then add a node using the templates:
+ *
+ * rootNode->addNode("thing", new LLHTTPNodeForPipe<LLThingPipe>);
+ *
+ * The templates are:
+ *
+ *      LLChainIOFactoryForPipe
+ *              - a simple factory that builds instances of a pipe
+ *
+ *      LLHTTPNodeForFacotry
+ *              - a HTTP node that uses a factory as the protocol handler
+ *
+ *      LLHTTPNodeForPipe
+ *              - a HTTP node that uses a simple factory based on a pipe
+ */
+//@{
+
+template<class Pipe>
+class LLChainIOFactoryForPipe : public LLChainIOFactory
+{
+public:
+        virtual bool build(LLPumpIO::chain_t& chain, LLSD context) const
+        {   
+                chain.push_back(LLIOPipe::ptr_t(new Pipe));
+                return true;
+        }
+};
+
+template<class Factory>
+class LLHTTPNodeForFactory : public LLHTTPNode
+{
+public:
+        const LLChainIOFactory* getProtocolHandler() const
+                { return &mProtocolHandler; }
+
+private:
+        Factory mProtocolHandler;
+};
+
+//@}
+
+
+template<class Pipe>
+class LLHTTPNodeForPipe : public LLHTTPNodeForFactory<
+                                                                        LLChainIOFactoryForPipe<Pipe> >
+{
+};
+
+
+#endif // LL_LLIOHTTPSERVER_H
+