net/http/http_stream_factory.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_stream_factory.h"
   6
   7 #include "base/logging.h"
   8 #include "base/strings/string_number_conversions.h"
   9 #include "base/strings/string_split.h"
  10 #include "base/strings/string_util.h"
  11 #include "net/base/host_mapping_rules.h"
  12 #include "net/base/host_port_pair.h"
  13 #include "net/base/port_util.h"
  14 #include "net/http/http_network_session.h"
  15 #include "url/gurl.h"
  16
  17 namespace net {
  18
  19 // WARNING: If you modify or add any static flags, you must keep them in sync
  20 // with |ResetStaticSettingsToInit|. This is critical for unit test isolation.
  21
  22 // static
  23 bool HttpStreamFactory::spdy_enabled_ = true;
  24
  25 HttpStreamFactory::~HttpStreamFactory() {}
  26
  27 // static
  28 void HttpStreamFactory::ResetStaticSettingsToInit() {
  29   spdy_enabled_ = true;
  30 }
  31
  32 void HttpStreamFactory::ProcessAlternateProtocol(
  33     const base::WeakPtr<HttpServerProperties>& http_server_properties,
  34     const std::vector<std::string>& alternate_protocol_values,
  35     const HostPortPair& http_host_port_pair,
  36     const HttpNetworkSession& session) {
  37   AlternateProtocol protocol = UNINITIALIZED_ALTERNATE_PROTOCOL;
  38   int port = 0;
  39   double probability = 1;
  40   bool is_valid = true;
  41   for (size_t i = 0; i < alternate_protocol_values.size(); ++i) {
  42     base::StringPiece alternate_protocol_str = alternate_protocol_values[i];
  43     if (base::StartsWith(alternate_protocol_str, "p=",
  44                          base::CompareCase::SENSITIVE)) {
  45       if (!base::StringToDouble(alternate_protocol_str.substr(2).as_string(),
  46                                 &probability) ||
  47           probability < 0 || probability > 1) {
  48         DVLOG(1) << kAlternateProtocolHeader
  49                  << " header has unrecognizable probability: "
  50                  << alternate_protocol_values[i];
  51         is_valid = false;
  52         break;
  53       }
  54       continue;
  55     }
  56
  57     std::vector<base::StringPiece> port_protocol_vector =
  58         base::SplitStringPiece(alternate_protocol_str, ":",
  59                                base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL);
  60     if (port_protocol_vector.size() != 2) {
  61       DVLOG(1) << kAlternateProtocolHeader
  62                << " header has too many tokens: "
  63                << alternate_protocol_str;
  64       is_valid = false;
  65       break;
  66     }
  67
  68     if (!base::StringToInt(port_protocol_vector[0], &port) ||
  69         port == 0 || !IsPortValid(port)) {
  70       DVLOG(1) << kAlternateProtocolHeader
  71                << " header has unrecognizable port: "
  72                << port_protocol_vector[0];
  73       is_valid = false;
  74       break;
  75     }
  76
  77     protocol = AlternateProtocolFromString(port_protocol_vector[1].as_string());
  78
  79     if (IsAlternateProtocolValid(protocol) &&
  80         !session.IsProtocolEnabled(protocol)) {
  81       DVLOG(1) << kAlternateProtocolHeader
  82                << " header has unrecognized protocol: "
  83                << port_protocol_vector[1];
  84       is_valid = false;
  85       break;
  86     }
  87   }
  88
  89   if (!is_valid || protocol == UNINITIALIZED_ALTERNATE_PROTOCOL) {
  90     http_server_properties->ClearAlternativeServices(http_host_port_pair);
  91     return;
  92   }
  93
  94   HostPortPair host_port(http_host_port_pair);
  95   const HostMappingRules* mapping_rules = GetHostMappingRules();
  96   if (mapping_rules)
  97     mapping_rules->RewriteHost(&host_port);
  98
  99   http_server_properties->SetAlternativeService(
 100       host_port, AlternativeService(protocol, "", static_cast<uint16>(port)),
 101       probability);
 102 }
 103
 104 GURL HttpStreamFactory::ApplyHostMappingRules(const GURL& url,
 105                                               HostPortPair* endpoint) {
 106   const HostMappingRules* mapping_rules = GetHostMappingRules();
 107   if (mapping_rules && mapping_rules->RewriteHost(endpoint)) {
 108     url::Replacements<char> replacements;
 109     const std::string port_str = base::UintToString(endpoint->port());
 110     replacements.SetPort(port_str.c_str(), url::Component(0, port_str.size()));
 111     replacements.SetHost(endpoint->host().c_str(),
 112                          url::Component(0, endpoint->host().size()));
 113     return url.ReplaceComponents(replacements);
 114   }
 115   return url;
 116 }
 117
 118 HttpStreamFactory::HttpStreamFactory() {}
 119
 120 }  // namespace net