Retry requests on reused sockets when receiving 408 responses.

net/base/net_log_event_type_list.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.
 
 // NOTE: No header guards are used, since this file is intended to be expanded
 // directly into net_log.h. DO NOT include this file anywhere else.
 
 // In the event of a failure, a many end events will have a |net_error|
 // parameter with the integer error code associated with the failure.  Most
 // of these parameters are not individually documented.
@@ skipping 1006 matching lines @@
 // Measures the time to read the entity body from the server.
 EVENT_TYPE(HTTP_TRANSACTION_READ_BODY)
 
 // Measures the time taken to read the response out of the socket before
 // restarting for authentication, on keep alive connections.
 EVENT_TYPE(HTTP_TRANSACTION_DRAIN_BODY_FOR_AUTH_RESTART)
 
 // This event is sent when we try to restart a transaction after an error.
 // The following parameters are attached:
 //   {
-//     "net_error": <The net error code integer for the failure>,
+//     "net_error": <The net error code integer for the failure, if applicable>,
+//     "http_status_code": <HTTP status code indicating an error, if
+//                          applicable>,
 //   }
 EVENT_TYPE(HTTP_TRANSACTION_RESTART_AFTER_ERROR)
 
 // ------------------------------------------------------------------------
 // SpdySession
 // ------------------------------------------------------------------------
 
 // The start/end of a SpdySession.
 //   {
 //     "host": <The host-port string>,
@@ skipping 1245 matching lines @@
 // entry.  It contains no parameters.
 EVENT_TYPE(SIMPLE_CACHE_ENTRY_CLOSE_BEGIN)
 
 // This event is created when the Simple Cache finishes a CloseEntry call.  It
 // contains no parameters.
 EVENT_TYPE(SIMPLE_CACHE_ENTRY_CLOSE_END)
 
 // This event is created (in a source of the same name) when the internal DNS
 // resolver creates a UDP socket to check for global IPv6 connectivity.
 EVENT_TYPE(IPV6_REACHABILITY_CHECK)