Support redirectUrl at onHeadersReceived in WebRequest / DWR API

net/url_request/url_request_unittest.cc

 // Copyright (c) 2012 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 "build/build_config.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
 #include <shlobj.h>
 #endif
@@ skipping 320 matching lines @@
     ASSERT_NE(AUTH_REQUIRED_RESPONSE_IO_PENDING, auth_retval);
     auth_retval_ = auth_retval;
   }
   void set_auth_credentials(const AuthCredentials& auth_credentials) {
     auth_credentials_ = auth_credentials;
   }
 
   void set_redirect_url(const GURL& url) {
     redirect_url_ = url;
   }
+  void set_redirect_url_on_headers_received(const GURL& url) {
+    redirect_url_on_headers_received_ = url;
+  }
 
   void set_block_on(int block_on) {
     block_on_ = block_on;
   }
 
   // Allows the user to check in which state did we block.
   Stage stage_blocked_for_callback() const {
     EXPECT_EQ(USER_CALLBACK, block_mode_);
     return stage_blocked_for_callback_;
   }
 
  private:
   void RunCallback(int response, const CompletionCallback& callback);
   void RunAuthCallback(AuthRequiredResponse response,
                        const AuthCallback& callback);
 
   // TestNetworkDelegate implementation.
   virtual int OnBeforeURLRequest(URLRequest* request,
                                  const CompletionCallback& callback,
                                  GURL* new_url) OVERRIDE;
 
   virtual int OnBeforeSendHeaders(URLRequest* request,
                                   const CompletionCallback& callback,
                                   HttpRequestHeaders* headers) OVERRIDE;
 
   virtual int OnHeadersReceived(
       URLRequest* request,
       const CompletionCallback& callback,
+      GURL* new_url,
       const HttpResponseHeaders* original_response_headers,
       scoped_refptr<HttpResponseHeaders>* override_response_headers) OVERRIDE;
 
   virtual NetworkDelegate::AuthRequiredResponse OnAuthRequired(
       URLRequest* request,
       const AuthChallengeInfo& auth_info,
       const AuthCallback& callback,
       AuthCredentials* credentials) OVERRIDE;
 
   // Resets the callbacks and |stage_blocked_for_callback_|.
   void Reset();
 
   // Checks whether we should block in |stage|. If yes, returns an error code
   // and optionally sets up callback based on |block_mode_|. If no, returns OK.
   int MaybeBlockStage(Stage stage, const CompletionCallback& callback);
 
   // Configuration parameters, can be adjusted by public methods:
   const BlockMode block_mode_;
 
   // Values returned on blocking stages when mode is SYNCHRONOUS or
   // AUTO_CALLBACK. For USER_CALLBACK these are set automatically to IO_PENDING.
   int retval_;  // To be returned in non-auth stages.
   AuthRequiredResponse auth_retval_;
 
-  GURL redirect_url_;  // Used if non-empty.
+  GURL redirect_url_;  // Used if non-empty during OnBeforeURLRequest.
+  GURL redirect_url_on_headers_received_;  // Used if non-empty.
   int block_on_;  // Bit mask: in which stages to block.
 
   // |auth_credentials_| will be copied to |*target_auth_credential_| on
   // callback.
   AuthCredentials auth_credentials_;
   AuthCredentials* target_auth_credentials_;
 
   // Internal variables, not set by not the user:
   // Last blocked stage waiting for user callback (unused if |block_mode_| !=
   // USER_CALLBACK).
@@ skipping 70 matching lines @@
     const CompletionCallback& callback,
     HttpRequestHeaders* headers) {
   TestNetworkDelegate::OnBeforeSendHeaders(request, callback, headers);
 
   return MaybeBlockStage(ON_BEFORE_SEND_HEADERS, callback);
 }
 
 int BlockingNetworkDelegate::OnHeadersReceived(
     URLRequest* request,
     const CompletionCallback& callback,
+    GURL* new_url,
     const HttpResponseHeaders* original_response_headers,
     scoped_refptr<HttpResponseHeaders>* override_response_headers) {
   TestNetworkDelegate::OnHeadersReceived(
-      request, callback, original_response_headers,
+      request, callback, new_url, original_response_headers,
       override_response_headers);
 
+  // Redirects to the same URL are allowed, but for simplicity, assume that
+  // the tests only redirect to a different URL.
+  if (!redirect_url_on_headers_received_.is_empty() &&
+      redirect_url_on_headers_received_ != request->url())
+    *new_url = redirect_url_on_headers_received_;
+
   return MaybeBlockStage(ON_HEADERS_RECEIVED, callback);
 }
 
 NetworkDelegate::AuthRequiredResponse BlockingNetworkDelegate::OnAuthRequired(
     URLRequest* request,
     const AuthChallengeInfo& auth_info,
     const AuthCallback& callback,
     AuthCredentials* credentials) {
   TestNetworkDelegate::OnAuthRequired(request, auth_info, callback,
                                       credentials);
@@ skipping 1908 matching lines @@
 class FixedDateNetworkDelegate : public TestNetworkDelegate {
  public:
   explicit FixedDateNetworkDelegate(const std::string& fixed_date)
       : fixed_date_(fixed_date) {}
   virtual ~FixedDateNetworkDelegate() {}
 
   // net::NetworkDelegate implementation
   virtual int OnHeadersReceived(
       net::URLRequest* request,
       const net::CompletionCallback& callback,
+      GURL* new_url,
       const net::HttpResponseHeaders* original_response_headers,
       scoped_refptr<net::HttpResponseHeaders>* override_response_headers)
       OVERRIDE;
 
  private:
   std::string fixed_date_;
 
   DISALLOW_COPY_AND_ASSIGN(FixedDateNetworkDelegate);
 };
 
 int FixedDateNetworkDelegate::OnHeadersReceived(
     net::URLRequest* request,
     const net::CompletionCallback& callback,
+    GURL* new_url,
     const net::HttpResponseHeaders* original_response_headers,
     scoped_refptr<net::HttpResponseHeaders>* override_response_headers) {
   net::HttpResponseHeaders* new_response_headers =
       new net::HttpResponseHeaders(original_response_headers->raw_headers());
 
   new_response_headers->RemoveHeader("Date");
   new_response_headers->AddHeader("Date: " + fixed_date_);
 
   *override_response_headers = new_response_headers;
   return TestNetworkDelegate::OnHeadersReceived(request,
                                                 callback,
+                                                new_url,
                                                 original_response_headers,
                                                 override_response_headers);
 }
 
 // Test that cookie expiration times are adjusted for server/client clock
 // skew and that we handle incorrect timezone specifier "UTC" in HTTP Date
 // headers by defaulting to GMT. (crbug.com/135131)
 TEST_F(URLRequestTest, AcceptClockSkewCookieWithWrongDateTimezone) {
   LocalHttpTestServer test_server;
   ASSERT_TRUE(test_server.Start());
@@ skipping 548 matching lines @@
     EXPECT_EQ(original_url, r.original_url());
     EXPECT_EQ(2U, r.url_chain().size());
     EXPECT_EQ(1, network_delegate.created_requests());
     EXPECT_EQ(0, network_delegate.destroyed_requests());
     EXPECT_EQ("POST", r.method());
     EXPECT_EQ(kData, d.data_received());
   }
   EXPECT_EQ(1, network_delegate.destroyed_requests());
 }
 
+// Tests that the network delegate can block and redirect a request to a new
+// URL during OnHeadersReceived.
+TEST_F(URLRequestTestHTTP, NetworkDelegateRedirectRequestOnHeadersReceived) {
+  ASSERT_TRUE(test_server_.Start());
+
+  TestDelegate d;
+  BlockingNetworkDelegate network_delegate(
+      BlockingNetworkDelegate::AUTO_CALLBACK);
+  network_delegate.set_block_on(BlockingNetworkDelegate::ON_HEADERS_RECEIVED);
+  GURL redirect_url(test_server_.GetURL("simple.html"));
+  network_delegate.set_redirect_url_on_headers_received(redirect_url);
+
+  TestURLRequestContextWithProxy context(
+      test_server_.host_port_pair().ToString(), &network_delegate);
+
+  {
+    GURL original_url(test_server_.GetURL("empty.html"));
+    URLRequest r(original_url, DEFAULT_PRIORITY, &d, &context);
+
+    r.Start();
+    base::RunLoop().Run();
+
+    EXPECT_EQ(URLRequestStatus::SUCCESS, r.status().status());
+    EXPECT_EQ(0, r.status().error());
+    EXPECT_EQ(redirect_url, r.url());
+    EXPECT_EQ(original_url, r.original_url());
+    EXPECT_EQ(2U, r.url_chain().size());
+    EXPECT_EQ(2, network_delegate.created_requests());
+    EXPECT_EQ(0, network_delegate.destroyed_requests());
+  }
+  EXPECT_EQ(1, network_delegate.destroyed_requests());

[battre, 2014/02/13 15:30:33]

This looks suspicious. Shouldn't there be 
a) only one created request?
b) the number of created requests match the number of destroyed requests?

+}
+
+// Tests that redirects caused by the network delegate during OnHeadersReceived
+// preserve POST data.
+TEST_F(URLRequestTestHTTP,
+       NetworkDelegateRedirectRequestOnHeadersReceivedPost) {
+  ASSERT_TRUE(test_server_.Start());
+
+  const char kData[] = "hello world";
+
+  TestDelegate d;
+  BlockingNetworkDelegate network_delegate(
+      BlockingNetworkDelegate::AUTO_CALLBACK);
+  network_delegate.set_block_on(BlockingNetworkDelegate::ON_HEADERS_RECEIVED);
+  GURL redirect_url(test_server_.GetURL("echo"));
+  network_delegate.set_redirect_url_on_headers_received(redirect_url);
+
+  TestURLRequestContext context(true);
+  context.set_network_delegate(&network_delegate);
+  context.Init();
+
+  {
+    GURL original_url(test_server_.GetURL("empty.html"));
+    URLRequest r(original_url, DEFAULT_PRIORITY, &d, &context);
+    r.set_method("POST");
+    r.set_upload(make_scoped_ptr(CreateSimpleUploadData(kData)));
+    HttpRequestHeaders headers;
+    headers.SetHeader(HttpRequestHeaders::kContentLength,
+                      base::UintToString(arraysize(kData) - 1));
+    r.SetExtraRequestHeaders(headers);
+    r.Start();
+    base::RunLoop().Run();
+
+    EXPECT_EQ(URLRequestStatus::SUCCESS, r.status().status());
+    EXPECT_EQ(0, r.status().error());
+    EXPECT_EQ(redirect_url, r.url());
+    EXPECT_EQ(original_url, r.original_url());
+    EXPECT_EQ(2U, r.url_chain().size());
+    EXPECT_EQ(2, network_delegate.created_requests());
+    EXPECT_EQ(0, network_delegate.destroyed_requests());
+    EXPECT_EQ("POST", r.method());
+    EXPECT_EQ(kData, d.data_received());
+  }
+  EXPECT_EQ(1, network_delegate.destroyed_requests());
+}
+
 // Tests that the network delegate can synchronously complete OnAuthRequired
 // by taking no action. This indicates that the NetworkDelegate does not want to
 // handle the challenge, and is passing the buck along to the
 // URLRequest::Delegate.
 TEST_F(URLRequestTestHTTP, NetworkDelegateOnAuthRequiredSyncNoAction) {
   ASSERT_TRUE(test_server_.Start());
 
   TestDelegate d;
   BlockingNetworkDelegate network_delegate(
       BlockingNetworkDelegate::SYNCHRONOUS);
@@ skipping 891 matching lines @@
   virtual int OnBeforeSendHeaders(URLRequest* request,
                                   const CompletionCallback& callback,
                                   HttpRequestHeaders* headers) OVERRIDE {
     TestNetworkDelegate::OnBeforeSendHeaders(request, callback, headers);
     return RunCallbackAsynchronously(request, callback);
   }
 
   virtual int OnHeadersReceived(
       URLRequest* request,
       const CompletionCallback& callback,
+      GURL* new_url,
       const HttpResponseHeaders* original_response_headers,
       scoped_refptr<HttpResponseHeaders>* override_response_headers) OVERRIDE {
-    TestNetworkDelegate::OnHeadersReceived(request, callback,
+    TestNetworkDelegate::OnHeadersReceived(request, callback, new_url,
                                            original_response_headers,
                                            override_response_headers);
     return RunCallbackAsynchronously(request, callback);
   }
 
   virtual NetworkDelegate::AuthRequiredResponse OnAuthRequired(
       URLRequest* request,
       const AuthChallengeInfo& auth_info,
       const AuthCallback& callback,
       AuthCredentials* credentials) OVERRIDE {
@@ skipping 3659 matching lines @@
 
     EXPECT_FALSE(r.is_pending());
     EXPECT_EQ(1, d->response_started_count());
     EXPECT_FALSE(d->received_data_before_response());
     EXPECT_EQ(d->bytes_received(), static_cast<int>(file_size));
   }
 }
 #endif  // !defined(DISABLE_FTP_SUPPORT)
 
 }  // namespace net