/*
- * Copyright (C) 1996-2015 The Squid Software Foundation and contributors
+ * Copyright (C) 1996-2017 The Squid Software Foundation and contributors
*
* Squid software is distributed under GPLv2+ license and includes
* contributions from numerous individuals and organizations.
#include "clients/Client.h"
#include "comm.h"
#include "http/forward.h"
-#include "HttpStateFlags.h"
+#include "http/StateFlags.h"
+#include "sbuf/SBuf.h"
class FwdState;
class HttpHeader;
CBDATA_CLASS(HttpStateData);
public:
+
+ /// assists in making and relaying entry caching/sharing decision
+ class ReuseDecision
+ {
+ public:
+ enum Answers { reuseNot = 0, cachePositively, cacheNegatively, doNotCacheButShare };
+
+ ReuseDecision(const StoreEntry *e, const Http::StatusCode code);
+ /// stores the corresponding decision
+ Answers make(const Answers ans, const char *why);
+
+ Answers answer; ///< the decision id
+ const char *reason; ///< the decision reason
+ const StoreEntry *entry; ///< entry for debugging
+ const Http::StatusCode statusCode; ///< HTTP status for debugging
+ };
+
HttpStateData(FwdState *);
~HttpStateData();
StoreEntry * entry,
const AccessLogEntryPointer &al,
HttpHeader * hdr_out,
- const HttpStateFlags &flags);
+ const Http::StateFlags &flags);
virtual const Comm::ConnectionPointer & dataConnection() const;
/* should be private */
void readReply(const CommIoCbParams &io);
virtual void maybeReadVirginBody(); // read response data from the network
- // Determine whether the response is a cacheable representation
- int cacheableReply();
+ // Checks whether the response is cacheable/shareable.
+ ReuseDecision::Answers reusableReply(ReuseDecision &decision);
CachePeer *_peer; /* CachePeer request made to */
int eof; /* reached end-of-object? */
int lastChunk; /* reached last chunk of a chunk-encoded reply */
- HttpStateFlags flags;
+ Http::StateFlags flags;
size_t read_sz;
SBuf inBuf; ///< I/O buffer for receiving server responses
bool ignoreCacheControl;
virtual bool getMoreRequestBody(MemBuf &buf);
virtual void closeServer(); // end communication with the server
virtual bool doneWithServer() const; // did we end communication?
- virtual void abortTransaction(const char *reason); // abnormal termination
+ virtual void abortAll(const char *reason); // abnormal termination
virtual bool mayReadVirginReplyBody() const;
+ void abortTransaction(const char *reason) { abortAll(reason); } // abnormal termination
+
/**
* determine if read buffer can have space made available
* for a read.
int64_t payloadSeen;
/// positive when we read more than we wanted
int64_t payloadTruncated;
+
+ /// Whether we received a Date header older than that of a matching
+ /// cached response.
+ bool sawDateGoBack;
};
+std::ostream &operator <<(std::ostream &os, const HttpStateData::ReuseDecision &d);
+
int httpCachable(const HttpRequestMethod&);
void httpStart(FwdState *);
-const char *httpMakeVaryMark(HttpRequest * request, HttpReply const * reply);
+SBuf httpMakeVaryMark(HttpRequest * request, HttpReply const * reply);
#endif /* SQUID_HTTP_H */