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/**
* @file httpresponse.h
* @brief Public-facing declarations for the HttpResponse class
*
* $LicenseInfo:firstyear=2012&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2012-2013, Linden Research, Inc.
*
* 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 only.
*
* 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
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
*/
#ifndef _LLCORE_HTTP_RESPONSE_H_
#define _LLCORE_HTTP_RESPONSE_H_
#include <string>
#include "httpcommon.h"
#include "_refcounted.h"
namespace LLCore
{
class BufferArray;
class HttpHeaders;
/// HttpResponse is instantiated by the library and handed to
/// the caller during callbacks to the handler. It supplies
/// all the status, header and HTTP body data the caller is
/// interested in. Methods provide simple getters to return
/// individual pieces of the response.
///
/// Typical usage will have the caller interrogate the object
/// during the handler callback and then simply returning.
/// But instances are refcounted and and callers can add a
/// reference and hold onto the object after the callback.
///
/// Threading: Not intrinsically thread-safe.
///
/// Allocation: Refcounted, heap only. Caller of the constructor
/// is given a refcount.
///
class HttpResponse : public LLCoreInt::RefCounted
{
public:
HttpResponse();
protected:
virtual ~HttpResponse(); // Use release()
HttpResponse(const HttpResponse &); // Not defined
void operator=(const HttpResponse &); // Not defined
public:
/// Statistics for the HTTP
struct TransferStats
{
typedef boost::shared_ptr<TransferStats> ptr_t;
TransferStats() : mSizeDownload(0.0), mTotalTime(0.0), mSpeedDownload(0.0) {}
F64 mSizeDownload;
F64 mTotalTime;
F64 mSpeedDownload;
};
/// Returns the final status of the requested operation.
///
HttpStatus getStatus() const
{
return mStatus;
}
void setStatus(const HttpStatus & status)
{
mStatus = status;
}
/// Simple getter for the response body returned as a scatter/gather
/// buffer. If the operation doesn't produce data (such as the Null
/// or StopThread operations), this may be NULL.
///
/// Caller can hold onto the response by incrementing the reference
/// count of the returned object.
BufferArray * getBody() const
{
return mBufferArray;
}
/// Safely get the size of the body buffer. If the body buffer is missing
/// return 0 as the size.
size_t getBodySize() const;
/// Set the response data in the instance. Will drop the reference
/// count to any existing data and increment the count of that passed
/// in. It is legal to set the data to NULL.
void setBody(BufferArray * ba);
/// And a getter for the headers. And as with @see getResponse(),
/// if headers aren't available because the operation doesn't produce
/// any or delivery of headers wasn't requested in the options, this
/// will be NULL.
///
/// Caller can hold onto the headers by incrementing the reference
/// count of the returned object.
HttpHeaders * getHeaders() const
{
return mHeaders;
}
/// Behaves like @see setResponse() but for header data.
void setHeaders(HttpHeaders * headers);
/// If a 'Range:' header was used, these methods are involved
/// in setting and returning data about the actual response.
/// If both @offset and @length are returned as 0, we probably
/// didn't get a Content-Range header in the response. This
/// occurs with various Capabilities-based services and the
/// caller is going to have to make assumptions on receipt of
/// a 206 status. The @full value may also be zero in cases of
/// parsing problems or a wild-carded length response.
///
/// These values will not necessarily agree with the data in
/// the body itself (if present). The BufferArray object
/// is authoritative for actual data length.
void getRange(unsigned int * offset, unsigned int * length, unsigned int * full) const
{
*offset = mReplyOffset;
*length = mReplyLength;
*full = mReplyFullLength;
}
void setRange(unsigned int offset, unsigned int length, unsigned int full_length)
{
mReplyOffset = offset;
mReplyLength = length;
mReplyFullLength = full_length;
}
///
const std::string & getContentType() const
{
return mContentType;
}
void setContentType(const std::string & con_type)
{
mContentType = con_type;
}
/// Get and set retry attempt information on the request.
void getRetries(unsigned int * retries, unsigned int * retries_503) const
{
if (retries)
{
*retries = mRetries;
}
if (retries_503)
{
*retries_503 = m503Retries;
}
}
void setRetries(unsigned int retries, unsigned int retries_503)
{
mRetries = retries;
m503Retries = retries_503;
}
void setTransferStats(TransferStats::ptr_t &stats)
{
mStats = stats;
}
TransferStats::ptr_t getTransferStats()
{
return mStats;
}
void setRequestURL(const std::string &url)
{
mRequestUrl = url;
}
const std::string &getRequestURL() const
{
return mRequestUrl;
}
protected:
// Response data here
HttpStatus mStatus;
unsigned int mReplyOffset;
unsigned int mReplyLength;
unsigned int mReplyFullLength;
BufferArray * mBufferArray;
HttpHeaders * mHeaders;
std::string mContentType;
unsigned int mRetries;
unsigned int m503Retries;
std::string mRequestUrl;
TransferStats::ptr_t mStats;
};
} // end namespace LLCore
#endif // _LLCORE_HTTP_RESPONSE_H_
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