Adds support for the DHCP portion of the WPAD (proxy auto-discovery) protocol.

net/proxy/proxy_service.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/proxy/proxy_service.h"
 
 #include <algorithm>
 
 #include "base/compiler_specific.h"
 #include "base/logging.h"
 #include "base/message_loop.h"
 #include "base/string_util.h"
 #include "base/values.h"
 #include "googleurl/src/gurl.h"
 #include "net/base/net_errors.h"
 #include "net/base/net_log.h"
 #include "net/base/net_util.h"
+#include "net/proxy/dhcp_proxy_script_fetcher.h"
 #include "net/proxy/init_proxy_resolver.h"
 #include "net/proxy/multi_threaded_proxy_resolver.h"
 #include "net/proxy/proxy_config_service_fixed.h"
 #include "net/proxy/proxy_resolver.h"
 #include "net/proxy/proxy_resolver_js_bindings.h"
 #include "net/proxy/proxy_resolver_v8.h"
 #include "net/proxy/proxy_script_fetcher.h"
 #include "net/proxy/sync_host_resolver_bridge.h"
 #include "net/url_request/url_request_context.h"
 
@@ skipping 359 matching lines @@
               kNumMillisToStallAfterNetworkChanges)) {
   NetworkChangeNotifier::AddIPAddressObserver(this);
   ResetConfigService(config_service);
 }
 
 // static
 ProxyService* ProxyService::CreateUsingV8ProxyResolver(
     ProxyConfigService* proxy_config_service,
     size_t num_pac_threads,
     ProxyScriptFetcher* proxy_script_fetcher,
+    DhcpProxyScriptFetcher* dhcp_proxy_script_fetcher,
     HostResolver* host_resolver,
     NetLog* net_log) {
   DCHECK(proxy_config_service);
   DCHECK(proxy_script_fetcher);
+  DCHECK(dhcp_proxy_script_fetcher);
   DCHECK(host_resolver);
 
   if (num_pac_threads == 0)
     num_pac_threads = kDefaultNumPacThreads;
 
   ProxyResolverFactory* sync_resolver_factory =
       new ProxyResolverFactoryForV8(
           host_resolver,
           MessageLoop::current(),
           net_log);
 
   ProxyResolver* proxy_resolver =
       new MultiThreadedProxyResolver(sync_resolver_factory, num_pac_threads);
 
   ProxyService* proxy_service =
       new ProxyService(proxy_config_service, proxy_resolver, net_log);
 
-  // Configure PAC script downloads to be issued using |proxy_script_fetcher|.
-  proxy_service->SetProxyScriptFetcher(proxy_script_fetcher);
+  // Configure fetchers to use for PAC script downloads and auto-detect.
+  proxy_service->SetProxyScriptFetchers(proxy_script_fetcher,
+                                        dhcp_proxy_script_fetcher);
 
   return proxy_service;
 }
 
 // static
 ProxyService* ProxyService::CreateUsingSystemProxyResolver(
     ProxyConfigService* proxy_config_service,
     size_t num_pac_threads,
     NetLog* net_log) {
   DCHECK(proxy_config_service);
@@ skipping 301 matching lines @@
     //
     // http://www.chromium.org/developers/design-documents/proxy-settings-fallback
     result->UseDirect();
     result_code = OK;
   }
 
   net_log.EndEvent(NetLog::TYPE_PROXY_SERVICE, NULL);
   return result_code;
 }
 
-void ProxyService::SetProxyScriptFetcher(
-    ProxyScriptFetcher* proxy_script_fetcher) {
+void ProxyService::SetProxyScriptFetchers(
+    ProxyScriptFetcher* proxy_script_fetcher,
+    DhcpProxyScriptFetcher* dhcp_proxy_script_fetcher) {
   DCHECK(CalledOnValidThread());
   State previous_state = ResetProxyConfig(false);
   proxy_script_fetcher_.reset(proxy_script_fetcher);
+  dhcp_proxy_script_fetcher_.reset(dhcp_proxy_script_fetcher);
   if (previous_state != STATE_NONE)
     ApplyProxyConfigIfAvailable();
 }
 
 ProxyScriptFetcher* ProxyService::GetProxyScriptFetcher() const {
   DCHECK(CalledOnValidThread());
   return proxy_script_fetcher_.get();
 }
 
+DhcpProxyScriptFetcher* ProxyService::GetDhcpProxyScriptFetcher() const {
+  DCHECK(CalledOnValidThread());
+  return dhcp_proxy_script_fetcher_.get();
+}
+
 ProxyService::State ProxyService::ResetProxyConfig(bool reset_fetched_config) {
   DCHECK(CalledOnValidThread());
   State previous_state = current_state_;
 
   proxy_retry_info_.clear();
   init_proxy_resolver_.reset();
   SuspendAllPendingRequests();
   config_ = ProxyConfig();
   if (reset_fetched_config)
     fetched_config_ = ProxyConfig();
@@ skipping 118 matching lines @@
   if (!fetched_config_.HasAutomaticSettings()) {
     config_ = fetched_config_;
     SetReady();
     return;
   }
 
   // Start downloading + testing the PAC scripts for this new configuration.
   current_state_ = STATE_WAITING_FOR_INIT_PROXY_RESOLVER;
 
   init_proxy_resolver_.reset(
-      new InitProxyResolver(resolver_.get(), proxy_script_fetcher_.get(),
+      new InitProxyResolver(resolver_.get(),
+                            proxy_script_fetcher_.get(),
+                            dhcp_proxy_script_fetcher_.get(),
                             net_log_));
 
   // If we changed networks recently, we should delay running proxy auto-config.
   base::TimeDelta wait_delay =
       stall_proxy_autoconfig_until_ - base::TimeTicks::Now();
 
   int rv = init_proxy_resolver_->Init(
       fetched_config_, wait_delay, &config_, &init_proxy_resolver_callback_);
 
   if (rv != ERR_IO_PENDING)
@@ skipping 70 matching lines @@
     OnCompletion(result_);
   }
 }
 
 void SyncProxyServiceHelper::OnCompletion(int rv) {
   result_ = rv;
   event_.Signal();
 }
 
 }  // namespace net