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