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/** 
 * @file llhttpclient.h
 * @brief Declaration of classes for making HTTP client requests.
 *
 * Copyright (c) 2006-$CurrentYear$, Linden Research, Inc.
 * $License$
 */

#ifndef LL_LLHTTPCLIENT_H
#define LL_LLHTTPCLIENT_H

/**
 * These classes represent the HTTP client framework.
 */

#include <string>

#include <boost/intrusive_ptr.hpp>

#include "llassettype.h"
#include "llbuffer.h"
#include "lliopipe.h"

extern const F32 HTTP_REQUEST_EXPIRY_SECS;

class LLUUID;
class LLPumpIO;
class LLSD;


class LLHTTPClient
{
public:
	class Responder
	{
	public:
		Responder();
		virtual ~Responder();

		/**
		 * @brief return true if the status code indicates success.
		 */
		static bool isGoodStatus(U32 status)
		{
			return((200 <= status) && (status < 300));
		}

		virtual void error(U32 status, const std::string& reason);	// called with bad status codes
		
		virtual void result(const LLSD& content);
		
		// Override point for clients that may want to use this class when the response is some other format besides LLSD
		virtual void completedRaw(U32 status, const std::string& reason, const LLChannelDescriptors& channels,
								const LLIOPipe::buffer_ptr_t& buffer);

		virtual void completed(U32 status, const std::string& reason, const LLSD& content);
			/**< The default implemetnation calls
				either:
				* result(), or
				* error() 
			*/
			
	public: /* but not really -- don't touch this */
		U32 mReferenceCount;
	};

	typedef boost::intrusive_ptr<Responder>	ResponderPtr;
	
	static void get(const std::string& url, ResponderPtr, const F32 timeout=HTTP_REQUEST_EXPIRY_SECS);
	static void get(const std::string& url, ResponderPtr, const LLSD& headers, const F32 timeout=HTTP_REQUEST_EXPIRY_SECS);
	static void get(const std::string& url, const LLSD& query, ResponderPtr, const F32 timeout=HTTP_REQUEST_EXPIRY_SECS);
	static void get(const std::string& url, const LLSD& query, ResponderPtr, const LLSD& headers, const F32 timeout=HTTP_REQUEST_EXPIRY_SECS);
	static void put(const std::string& url, const LLSD& body, ResponderPtr, const F32 timeout=HTTP_REQUEST_EXPIRY_SECS);
		///< non-blocking
	static void post(const std::string& url, const LLSD& body, ResponderPtr, const F32 timeout=HTTP_REQUEST_EXPIRY_SECS);
	static void post(const std::string& url, const U8* data, S32 size, ResponderPtr responder, const F32 timeout=HTTP_REQUEST_EXPIRY_SECS);
	static void postFile(const std::string& url, const std::string& filename, ResponderPtr, const F32 timeout=HTTP_REQUEST_EXPIRY_SECS);
	static void postFile(const std::string& url, const LLUUID& uuid,
		LLAssetType::EType asset_type, ResponderPtr responder, const F32 timeout=HTTP_REQUEST_EXPIRY_SECS);

	// Blocking HTTP get that returns an LLSD map of status and body.
	static LLSD blockingGet(const std::string& url);

	static void del(const std::string& url, ResponderPtr, const F32 timeout=HTTP_REQUEST_EXPIRY_SECS);
		///< sends a DELETE method, but we can't call it delete in c++
	
	
	static void setPump(LLPumpIO& pump);
		///< must be called before any of the above calls are made
	static bool hasPump();
		///< for testing
	
	static void setCABundle(const std::string& caBundle);
		///< use this root CA bundle when checking SSL connections
		///< defaults to the standard system root CA bundle
		///< @see LLURLRequest::checkRootCertificate()
};



namespace boost
{
	void intrusive_ptr_add_ref(LLHTTPClient::Responder* p);
	void intrusive_ptr_release(LLHTTPClient::Responder* p);
};


#endif // LL_LLHTTPCLIENT_H