#include "async_fetch.h"

Inheritance diagram for net_instaweb::ConditionalSharedAsyncFetch:

Public Member Functions
	ConditionalSharedAsyncFetch (AsyncFetch base_fetch, HTTPValue cached_value, MessageHandler *handler)

void	set_num_conditional_refreshes (Variable *x)

Public Member Functions inherited from net_instaweb::SharedAsyncFetch
	SharedAsyncFetch (AsyncFetch *base_fetch)

virtual const RequestContextPtr &	request_context ()

Public Member Functions inherited from net_instaweb::AsyncFetch
	AsyncFetch (const RequestContextPtr &request_ctx)

void	HeadersComplete ()

void	Done (bool success)

virtual bool	Write (const StringPiece &content, MessageHandler *handler)

virtual bool	Flush (MessageHandler *handler)

RequestHeaders *	request_headers ()

void	set_request_headers (RequestHeaders *headers)

void	SetRequestHeadersTakingOwnership (RequestHeaders *headers)
	Same as above, but takes ownership.

const RequestHeaders *	request_headers () const

ResponseHeaders *	response_headers ()
	See doc for request_headers and set_request_headers.

void	set_response_headers (ResponseHeaders *headers)

ResponseHeaders *	extra_response_headers ()

void	set_extra_response_headers (ResponseHeaders *headers)

virtual void	Reset ()

bool	headers_complete () const

bool	content_length_known () const

int64	content_length () const

void	set_content_length (int64 x)

GoogleString	LoggingString ()

virtual AbstractLogRecord *	log_record ()

void	FixCacheControlForGoogleCache ()

Public Member Functions inherited from net_instaweb::Writer
virtual bool	Dump (Writer writer, MessageHandler message_handler)

Protected Member Functions
virtual void	HandleDone (bool success)

virtual bool	HandleWrite (const StringPiece &content, MessageHandler *handler)

virtual bool	HandleFlush (MessageHandler *handler)

virtual void	HandleHeadersComplete ()

Protected Member Functions inherited from net_instaweb::SharedAsyncFetch
virtual bool	IsCachedResultValid (const ResponseHeaders &headers)

virtual bool	IsBackgroundFetch () const

void	PropagateContentLength ()
	Propagates any set_content_length from this to the base fetch.

Additional Inherited Members
Static Public Member Functions inherited from net_instaweb::AsyncFetch
static bool	IsGoogleCacheVia (StringPiece via_value)

Static Public Attributes inherited from net_instaweb::AsyncFetch
static const int	kContentLengthUnknown = -1

Detailed Description

Creates a SharedAsyncFetch object using an existing AsyncFetch and a cached value (that may be stale) that is used to conditionally check if the resource at the origin has changed. If the resource hasn't changed and we get a 304, we serve the cached response, thus avoiding the download of the entire content. Note that we if you want the conditionally validated resource to be treated as a newly fetched with the original ttl, you should use this fetch such that the fixing of date headers happens in the base fetch. Also, note that this class gets deleted when HandleDone is called.

The documentation for this class was generated from the following file:

net/instaweb/http/public/async_fetch.h

Public Member Functions

Protected Member Functions

Additional Inherited Members

Detailed Description