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+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef NET_HTTP_HTTP_RESPONSE_INFO_H_
+#define NET_HTTP_HTTP_RESPONSE_INFO_H_
+
+#include <string>
+
+#include "base/time/time.h"
+#include "net/base/host_port_pair.h"
+#include "net/base/net_export.h"
+#include "net/http/http_vary_data.h"
+#include "net/socket/next_proto.h"
+#include "net/ssl/ssl_info.h"
+
+class Pickle;
+
+namespace net {
+
+class AuthChallengeInfo;
+class HttpResponseHeaders;
+class IOBufferWithSize;
+class SSLCertRequestInfo;
+
+class NET_EXPORT HttpResponseInfo {
+ public:
+ // Describes the kind of connection used to fetch this response.
+ //
+ // NOTE: This is persisted to the cache, so make sure not to reorder
+ // these values.
+ //
+ // TODO(akalin): Better yet, just use a string instead of an enum,
+ // like |npn_negotiated_protocol|.
+ enum ConnectionInfo {
+ CONNECTION_INFO_UNKNOWN = 0,
+ CONNECTION_INFO_HTTP1 = 1,
+ CONNECTION_INFO_SPDY2 = 2,
+ CONNECTION_INFO_SPDY3 = 3,
+ CONNECTION_INFO_SPDY4A2 = 4,
+ CONNECTION_INFO_QUIC1_SPDY3 = 5,
+ CONNECTION_INFO_HTTP2_DRAFT_04 = 6,
+ NUM_OF_CONNECTION_INFOS,
+ };
+
+ HttpResponseInfo();
+ HttpResponseInfo(const HttpResponseInfo& rhs);
+ ~HttpResponseInfo();
+ HttpResponseInfo& operator=(const HttpResponseInfo& rhs);
+ // Even though we could get away with the copy ctor and default operator=,
+ // that would prevent us from doing a bunch of forward declaration.
+
+ // Initializes from the representation stored in the given pickle.
+ bool InitFromPickle(const Pickle& pickle, bool* response_truncated);
+
+ // Call this method to persist the response info.
+ void Persist(Pickle* pickle,
+ bool skip_transient_headers,
+ bool response_truncated) const;
+
+ // The following is only defined if the request_time member is set.
+ // If this response was resurrected from cache, then this bool is set, and
+ // request_time may corresponds to a time "far" in the past. Note that
+ // stale content (perhaps un-cacheable) may be fetched from cache subject to
+ // the load flags specified on the request info. For example, this is done
+ // when a user presses the back button to re-render pages, or at startup,
+ // when reloading previously visited pages (without going over the network).
+ bool was_cached;
+
+ // True if the request was fetched from cache rather than the network
+ // because of a LOAD_FROM_CACHE_IF_OFFLINE flag when the system
+ // was unable to contact the server.
+ bool server_data_unavailable;
+
+ // True if the request accessed the network in the process of retrieving
+ // data.
+ bool network_accessed;
+
+ // True if the request was fetched over a SPDY channel.
+ bool was_fetched_via_spdy;
+
+ // True if the npn was negotiated for this request.
+ bool was_npn_negotiated;
+
+ // True if the request was fetched via an explicit proxy. The proxy could
+ // be any type of proxy, HTTP or SOCKS. Note, we do not know if a
+ // transparent proxy may have been involved.
+ bool was_fetched_via_proxy;
+
+ // Whether the request use http proxy or server authentication.
+ bool did_use_http_auth;
+
+ // Remote address of the socket which fetched this resource.
+ //
+ // NOTE: If the response was served from the cache (was_cached is true),
+ // the socket address will be set to the address that the content came from
+ // originally. This is true even if the response was re-validated using a
+ // different remote address, or if some of the content came from a byte-range
+ // request to a different address.
+ HostPortPair socket_address;
+
+ // Protocol negotiated with the server.
+ std::string npn_negotiated_protocol;
+
+ // The type of connection used for this response.
+ ConnectionInfo connection_info;
+
+ // The time at which the request was made that resulted in this response.
+ // For cached responses, this is the last time the cache entry was validated.
+ base::Time request_time;
+
+ // The time at which the response headers were received. For cached
+ // this is the last time the cache entry was validated.
+ base::Time response_time;
+
+ // If the response headers indicate a 401 or 407 failure, then this structure
+ // will contain additional information about the authentication challenge.
+ scoped_refptr<AuthChallengeInfo> auth_challenge;
+
+ // The SSL client certificate request info.
+ // TODO(wtc): does this really belong in HttpResponseInfo? I put it here
+ // because it is similar to |auth_challenge|, but unlike HTTP authentication
+ // challenge, client certificate request is not part of an HTTP response.
+ scoped_refptr<SSLCertRequestInfo> cert_request_info;
+
+ // The SSL connection info (if HTTPS).
+ SSLInfo ssl_info;
+
+ // The parsed response headers and status line.
+ scoped_refptr<HttpResponseHeaders> headers;
+
+ // The "Vary" header data for this response.
+ HttpVaryData vary_data;
+
+ // Any metadata asociated with this resource's cached data.
+ scoped_refptr<IOBufferWithSize> metadata;
+
+ static ConnectionInfo ConnectionInfoFromNextProto(NextProto next_proto);
+
+ static std::string ConnectionInfoToString(ConnectionInfo connection_info);
+};
+
+} // namespace net
+
+#endif // NET_HTTP_HTTP_RESPONSE_INFO_H_