net/http/http_server_properties.cc

   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.
   4
   5 #include "net/http/http_server_properties.h"
   6
   7 #include "base/logging.h"
   8 #include "base/metrics/histogram_macros.h"
   9 #include "base/strings/stringprintf.h"
  10 #include "net/socket/ssl_client_socket.h"
  11 #include "net/ssl/ssl_config.h"
  12
  13 namespace net {
  14
  15 const char kAlternateProtocolHeader[] = "Alternate-Protocol";
  16 const char kAlternativeServiceHeader[] = "Alt-Svc";
  17
  18 namespace {
  19
  20 // The order of these strings much match the order of the enum definition
  21 // for AlternateProtocol.
  22 const char* const kAlternateProtocolStrings[] = {
  23     "npn-spdy/2",
  24     "npn-spdy/3",
  25     "npn-spdy/3.1",
  26     "npn-h2",
  27     "quic"};
  28
  29 static_assert(arraysize(kAlternateProtocolStrings) ==
  30                   NUM_VALID_ALTERNATE_PROTOCOLS,
  31               "kAlternateProtocolStrings has incorrect size");
  32
  33 }  // namespace
  34
  35 void HistogramAlternateProtocolUsage(AlternateProtocolUsage usage) {
  36   UMA_HISTOGRAM_ENUMERATION("Net.AlternateProtocolUsage", usage,
  37                             ALTERNATE_PROTOCOL_USAGE_MAX);
  38 }
  39
  40 void HistogramBrokenAlternateProtocolLocation(
  41     BrokenAlternateProtocolLocation location){
  42   UMA_HISTOGRAM_ENUMERATION("Net.AlternateProtocolBrokenLocation", location,
  43                             BROKEN_ALTERNATE_PROTOCOL_LOCATION_MAX);
  44 }
  45
  46 bool IsAlternateProtocolValid(AlternateProtocol protocol) {
  47   return protocol >= ALTERNATE_PROTOCOL_MINIMUM_VALID_VERSION &&
  48       protocol <= ALTERNATE_PROTOCOL_MAXIMUM_VALID_VERSION;
  49 }
  50
  51 const char* AlternateProtocolToString(AlternateProtocol protocol) {
  52   switch (protocol) {
  53     case DEPRECATED_NPN_SPDY_2:
  54     case NPN_SPDY_3:
  55     case NPN_SPDY_3_1:
  56     case NPN_HTTP_2:
  57     case QUIC:
  58       DCHECK(IsAlternateProtocolValid(protocol));
  59       return kAlternateProtocolStrings[
  60           protocol - ALTERNATE_PROTOCOL_MINIMUM_VALID_VERSION];
  61     case UNINITIALIZED_ALTERNATE_PROTOCOL:
  62       return "Uninitialized";
  63   }
  64   NOTREACHED();
  65   return "";
  66 }
  67
  68 AlternateProtocol AlternateProtocolFromString(const std::string& str) {
  69   for (int i = ALTERNATE_PROTOCOL_MINIMUM_VALID_VERSION;
  70        i <= ALTERNATE_PROTOCOL_MAXIMUM_VALID_VERSION; ++i) {
  71     AlternateProtocol protocol = static_cast<AlternateProtocol>(i);
  72     if (str == AlternateProtocolToString(protocol))
  73       return protocol;
  74   }
  75   return UNINITIALIZED_ALTERNATE_PROTOCOL;
  76 }
  77
  78 AlternateProtocol AlternateProtocolFromNextProto(NextProto next_proto) {
  79   switch (next_proto) {
  80     case kProtoDeprecatedSPDY2:
  81       return DEPRECATED_NPN_SPDY_2;
  82     case kProtoSPDY3:
  83       return NPN_SPDY_3;
  84     case kProtoSPDY31:
  85       return NPN_SPDY_3_1;
  86     case kProtoHTTP2:
  87       return NPN_HTTP_2;
  88     case kProtoQUIC1SPDY3:
  89       return QUIC;
  90
  91     case kProtoUnknown:
  92     case kProtoHTTP11:
  93       break;
  94   }
  95
  96   NOTREACHED() << "Invalid NextProto: " << next_proto;
  97   return UNINITIALIZED_ALTERNATE_PROTOCOL;
  98 }
  99
 100 std::string AlternativeService::ToString() const {
 101   return base::StringPrintf("%s %s:%d", AlternateProtocolToString(protocol),
 102                             host.c_str(), port);
 103 }
 104
 105 std::string AlternativeServiceInfo::ToString() const {
 106   return base::StringPrintf("%s, p=%f", alternative_service.ToString().c_str(),
 107                             probability);
 108 }
 109
 110 // static
 111 void HttpServerProperties::ForceHTTP11(SSLConfig* ssl_config) {
 112   ssl_config->next_protos.clear();
 113   ssl_config->next_protos.push_back(kProtoHTTP11);
 114 }
 115
 116 }  // namespace net