[net/http auth] Make HttpAuthHandler challenge handling asynchronous.

net/http/http_network_transaction.h

 // 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.
 
 #ifndef NET_HTTP_HTTP_NETWORK_TRANSACTION_H_
 #define NET_HTTP_HTTP_NETWORK_TRANSACTION_H_
 
 #include <stdint.h>
 
 #include <string>
@@ skipping 127 matching lines @@
     STATE_GENERATE_SERVER_AUTH_TOKEN,
     STATE_GENERATE_SERVER_AUTH_TOKEN_COMPLETE,
     STATE_INIT_REQUEST_BODY,
     STATE_INIT_REQUEST_BODY_COMPLETE,
     STATE_BUILD_REQUEST,
     STATE_BUILD_REQUEST_COMPLETE,
     STATE_SEND_REQUEST,
     STATE_SEND_REQUEST_COMPLETE,
     STATE_READ_HEADERS,
     STATE_READ_HEADERS_COMPLETE,
+    STATE_HANDLE_AUTH_CHALLENGE,
+    STATE_HANDLE_AUTH_CHALLENGE_COMPLETE,
     STATE_READ_BODY,
     STATE_READ_BODY_COMPLETE,
     STATE_DRAIN_BODY_FOR_AUTH_RESTART,
     STATE_DRAIN_BODY_FOR_AUTH_RESTART_COMPLETE,
     STATE_NONE
   };
 
   bool IsSecureRequest() const;
 
   // Returns true if the request is using an HTTP(S) proxy without being
@@ skipping 20 matching lines @@
   int DoGenerateServerAuthToken();
   int DoGenerateServerAuthTokenComplete(int result);
   int DoInitRequestBody();
   int DoInitRequestBodyComplete(int result);
   int DoBuildRequest();
   int DoBuildRequestComplete(int result);
   int DoSendRequest();
   int DoSendRequestComplete(int result);
   int DoReadHeaders();
   int DoReadHeadersComplete(int result);
+  int DoHandleAuthChallenge();
+  int DoHandleAuthChallengeComplete(int result);
   int DoReadBody();
   int DoReadBodyComplete(int result);
   int DoDrainBodyForAuthRestart();
   int DoDrainBodyForAuthRestartComplete(int result);
 
   void BuildRequestHeaders(bool using_http_proxy_without_tunnel);
 
   // Writes a log message to help debugging in the field when we block a proxy
   // response to a CONNECT request.
   void LogBlockedTunnelResponse(int response_code) const;
@@ skipping 46 matching lines @@
 
   // Records metrics relating to SSL fallbacks.
   void RecordSSLFallbackMetrics(int result);
 
   // Returns true if we should try to add a Proxy-Authorization header
   bool ShouldApplyProxyAuth() const;
 
   // Returns true if we should try to add an Authorization header.
   bool ShouldApplyServerAuth() const;
 
-  // Handles HTTP status code 401 or 407.
-  // HandleAuthChallenge() returns a network error code, or OK on success.
-  // May update |pending_auth_target_| or |response_.auth_challenge|.
-  int HandleAuthChallenge();
-
   // Returns true if we have auth credentials for the given target.
   bool HaveAuth(HttpAuth::Target target) const;
 
   // Get the {scheme, host, path, port} for the authentication target
   GURL AuthURL(HttpAuth::Target target) const;
 
   // Returns true if this transaction is for a WebSocket handshake
   bool ForWebSocketHandshake() const;
 
   // Debug helper.
@@ skipping 84 matching lines @@
 
   ConnectionAttempts connection_attempts_;
   IPEndPoint remote_endpoint_;
 
   DISALLOW_COPY_AND_ASSIGN(HttpNetworkTransaction);
 };
 
 }  // namespace net
 
 #endif  // NET_HTTP_HTTP_NETWORK_TRANSACTION_H_