1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
|
// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef NET_BASE_TRANSPORT_INFO_H_
#define NET_BASE_TRANSPORT_INFO_H_
#include <iosfwd>
#include <string>
#include "base/strings/string_piece.h"
#include "net/base/ip_endpoint.h"
#include "net/base/net_export.h"
namespace net {
// Specifies the type of a network transport over which a resource is loaded.
enum class TransportType {
// The transport was established directly to a peer.
kDirect,
// The transport was established to a proxy of some kind.
kProxied,
// The transport was "established" to a cache entry.
kCached,
// Same as `kCached`, but the resource was initially loaded through a proxy.
kCachedFromProxy,
};
// Returns a string representation of the given transport type.
// The returned StringPiece is static, has no lifetime restrictions.
NET_EXPORT base::StringPiece TransportTypeToString(TransportType type);
// Describes a network transport.
struct NET_EXPORT TransportInfo {
TransportInfo();
TransportInfo(TransportType type_arg,
IPEndPoint endpoint_arg,
std::string accept_ch_frame_arg);
TransportInfo(const TransportInfo&);
~TransportInfo();
// Instances of this type are comparable for equality.
bool operator==(const TransportInfo& other) const;
bool operator!=(const TransportInfo& other) const;
// Returns a string representation of this struct, suitable for debugging.
std::string ToString() const;
// The type of the transport.
TransportType type = TransportType::kDirect;
// If `type` is `kDirect`, then this identifies the peer endpoint.
// If `type` is `kProxied`, then this identifies the proxy endpoint.
// If `type` is `kCached`, then this identifies the peer endpoint from which
// the resource was originally loaded.
// If `type` is `kCachedFromProxy`, then this identifies the proxy endpoint
// from which the resource was originally loaded.
IPEndPoint endpoint;
// The value of the ACCEPT_CH HTTP2/3 frame, as pulled in through ALPS.
//
// Invariant: if `type` is `kCached` or `kCachedFromProxy`, then this is
// empty.
std::string accept_ch_frame;
};
// Instances of these types are streamable for easier debugging.
NET_EXPORT std::ostream& operator<<(std::ostream& out, TransportType type);
NET_EXPORT std::ostream& operator<<(std::ostream& out,
const TransportInfo& info);
} // namespace net
#endif // NET_BASE_TRANSPORT_INFO_H_
|
