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

net/proxy/proxy_script_fetcher_impl.h

 // 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.
 
 #ifndef NET_PROXY_PROXY_SCRIPT_FETCHER_IMPL_H_
 #define NET_PROXY_PROXY_SCRIPT_FETCHER_IMPL_H_
 #pragma once
 
 #include "base/basictypes.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/string16.h"
 #include "base/task.h"
 #include "base/time.h"
 #include "net/proxy/proxy_script_fetcher.h"
 #include "net/url_request/url_request.h"
 
 class GURL;
 class X509Certificate;
 
 namespace net {
 
 class URLRequestContext;
 
 // Implementation of ProxyScriptFetcher that downloads scripts using the
 // specified request context.
-class ProxyScriptFetcherImpl : public ProxyScriptFetcher,
+class ProxyScriptFetcherImpl : public URLProxyScriptFetcher,
                                public URLRequest::Delegate {
  public:
   // Creates a ProxyScriptFetcher that issues requests through
   // |url_request_context|. |url_request_context| must remain valid for the
   // lifetime of ProxyScriptFetcherImpl.
   // Note that while a request is in progress, we will be holding a reference
   // to |url_request_context|. Be careful not to create cycles between the
   // fetcher and the context; you can break such cycles by calling Cancel().
   explicit ProxyScriptFetcherImpl(URLRequestContext* url_request_context);
 
   virtual ~ProxyScriptFetcherImpl();
 
   // Used by unit-tests to modify the default limits.
   base::TimeDelta SetTimeoutConstraint(base::TimeDelta timeout);
   size_t SetSizeConstraint(size_t size_bytes);
 
   virtual void OnResponseCompleted(URLRequest* request);
 
-  // ProxyScriptFetcher methods:
-  virtual int Fetch(const GURL& url, string16* text,
-                    CompletionCallback* callback);
-  virtual void Cancel();
-  virtual URLRequestContext* GetRequestContext();
+  // URLProxyScriptFetcher methods:
+  virtual int Fetch(string16* text, CompletionCallback* callback) OVERRIDE;
+  virtual void Cancel() OVERRIDE;
+  virtual URLRequestContext* GetRequestContext() const OVERRIDE;
+  virtual void SetURL(const GURL& url) OVERRIDE;
 
   // URLRequest::Delegate methods:
   virtual void OnAuthRequired(URLRequest* request,
                               AuthChallengeInfo* auth_info);
   virtual void OnSSLCertificateError(URLRequest* request, int cert_error,
                                      X509Certificate* cert);
   virtual void OnResponseStarted(URLRequest* request);
   virtual void OnReadCompleted(URLRequest* request, int num_bytes);
 
  private:
@@ skipping 16 matching lines @@
   // Callback for time-out task of request with id |id|.
   void OnTimeout(int id);
 
   // Factory for creating the time-out task. This takes care of revoking
   // outstanding tasks when |this| is deleted.
   ScopedRunnableMethodFactory<ProxyScriptFetcherImpl> task_factory_;
 
   // The context used for making network requests.
   URLRequestContext* url_request_context_;
 
+  // The URL that should be fetched. Valid only after |SetURL()| has been
+  // called.
+  GURL url_;
+
   // Buffer that URLRequest writes into.
   scoped_refptr<IOBuffer> buf_;
 
   // The next ID to use for |cur_request_| (monotonically increasing).
   int next_id_;
 
   // The current (in progress) request, or NULL.
   scoped_ptr<URLRequest> cur_request_;
 
   // State for current request (only valid when |cur_request_| is not NULL):
@@ skipping 19 matching lines @@
 
   // The maximum amount of time to wait for download to complete.
   base::TimeDelta max_duration_;
 
   DISALLOW_COPY_AND_ASSIGN(ProxyScriptFetcherImpl);
 };
 
 }  // namespace net
 
 #endif  // NET_PROXY_PROXY_SCRIPT_FETCHER_IMPL_H_