Updating trunk VERSION from 2139.0 to 2140.0
[chromium-blink-merge.git] / net / http / http_server_properties.cc
blob601646a35c05c12c33c96232cff4f95460859463
1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #include "net/http/http_server_properties.h"
7 #include "base/logging.h"
8 #include "base/metrics/histogram.h"
9 #include "base/strings/stringprintf.h"
11 namespace net {
13 const char kAlternateProtocolHeader[] = "Alternate-Protocol";
15 namespace {
17 // The order of these strings much match the order of the enum definition
18 // for AlternateProtocol.
19 const char* const kAlternateProtocolStrings[] = {
20 "npn-spdy/2",
21 "npn-spdy/3",
22 "npn-spdy/3.1",
23 "npn-h2-14", // HTTP/2 draft 14. Called SPDY4 internally.
24 "quic"
26 const char kBrokenAlternateProtocol[] = "Broken";
28 COMPILE_ASSERT(
29 arraysize(kAlternateProtocolStrings) == NUM_VALID_ALTERNATE_PROTOCOLS,
30 kAlternateProtocolStringsSize_kNumValidAlternateProtocols_not_equal);
32 } // namespace
34 void HistogramAlternateProtocolUsage(
35 AlternateProtocolUsage usage,
36 AlternateProtocolExperiment alternate_protocol_experiment) {
37 UMA_HISTOGRAM_ENUMERATION("Net.AlternateProtocolUsage", usage,
38 ALTERNATE_PROTOCOL_USAGE_MAX);
39 if (alternate_protocol_experiment ==
40 ALTERNATE_PROTOCOL_TRUNCATED_200_SERVERS) {
41 UMA_HISTOGRAM_ENUMERATION("Net.AlternateProtocolUsage.200Truncated", usage,
42 ALTERNATE_PROTOCOL_USAGE_MAX);
43 } else if (alternate_protocol_experiment ==
44 ALTERNATE_PROTOCOL_TRUNCATED_1000_SERVERS) {
45 UMA_HISTOGRAM_ENUMERATION("Net.AlternateProtocolUsage.1000Truncated", usage,
46 ALTERNATE_PROTOCOL_USAGE_MAX);
50 void HistogramBrokenAlternateProtocolLocation(
51 BrokenAlternateProtocolLocation location){
52 UMA_HISTOGRAM_ENUMERATION("Net.AlternateProtocolBrokenLocation", location,
53 BROKEN_ALTERNATE_PROTOCOL_LOCATION_MAX);
56 bool IsAlternateProtocolValid(AlternateProtocol protocol) {
57 return protocol >= ALTERNATE_PROTOCOL_MINIMUM_VALID_VERSION &&
58 protocol <= ALTERNATE_PROTOCOL_MAXIMUM_VALID_VERSION;
61 const char* AlternateProtocolToString(AlternateProtocol protocol) {
62 switch (protocol) {
63 case DEPRECATED_NPN_SPDY_2:
64 case NPN_SPDY_3:
65 case NPN_SPDY_3_1:
66 case NPN_SPDY_4:
67 case QUIC:
68 DCHECK(IsAlternateProtocolValid(protocol));
69 return kAlternateProtocolStrings[
70 protocol - ALTERNATE_PROTOCOL_MINIMUM_VALID_VERSION];
71 case ALTERNATE_PROTOCOL_BROKEN:
72 return kBrokenAlternateProtocol;
73 case UNINITIALIZED_ALTERNATE_PROTOCOL:
74 return "Uninitialized";
76 NOTREACHED();
77 return "";
80 AlternateProtocol AlternateProtocolFromString(const std::string& str) {
81 for (int i = ALTERNATE_PROTOCOL_MINIMUM_VALID_VERSION;
82 i <= ALTERNATE_PROTOCOL_MAXIMUM_VALID_VERSION; ++i) {
83 AlternateProtocol protocol = static_cast<AlternateProtocol>(i);
84 if (str == AlternateProtocolToString(protocol))
85 return protocol;
87 if (str == kBrokenAlternateProtocol)
88 return ALTERNATE_PROTOCOL_BROKEN;
89 return UNINITIALIZED_ALTERNATE_PROTOCOL;
92 AlternateProtocol AlternateProtocolFromNextProto(NextProto next_proto) {
93 switch (next_proto) {
94 case kProtoDeprecatedSPDY2:
95 return DEPRECATED_NPN_SPDY_2;
96 case kProtoSPDY3:
97 return NPN_SPDY_3;
98 case kProtoSPDY31:
99 return NPN_SPDY_3_1;
100 case kProtoSPDY4:
101 return NPN_SPDY_4;
102 case kProtoQUIC1SPDY3:
103 return QUIC;
105 case kProtoUnknown:
106 case kProtoHTTP11:
107 break;
110 NOTREACHED() << "Invalid NextProto: " << next_proto;
111 return UNINITIALIZED_ALTERNATE_PROTOCOL;
114 std::string AlternateProtocolInfo::ToString() const {
115 return base::StringPrintf("%d:%s p=%f", port,
116 AlternateProtocolToString(protocol),
117 probability);
120 } // namespace net