Fix a bug where putting a laptop to sleep causes downloads to end normally.

content/browser/download/download_resource_handler.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 "content/browser/download/download_resource_handler.h"
 
 #include <string>
 
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
 #include "base/metrics/stats_counters.h"
 #include "base/stringprintf.h"
 #include "content/browser/browser_thread.h"
 #include "content/browser/download/download_buffer.h"
 #include "content/browser/download/download_create_info.h"
 #include "content/browser/download/download_file_manager.h"
 #include "content/browser/download/download_item.h"
 #include "content/browser/download/download_request_handle.h"
 #include "content/browser/download/download_stats.h"
+#include "content/browser/download/interrupt_reasons.h"
 #include "content/browser/renderer_host/global_request_id.h"
 #include "content/browser/renderer_host/resource_dispatcher_host.h"
 #include "content/browser/renderer_host/resource_dispatcher_host_request_info.h"
 #include "content/common/resource_response.h"
 #include "net/base/io_buffer.h"
 #include "net/base/net_errors.h"
 #include "net/http/http_response_headers.h"
 #include "net/url_request/url_request_context.h"
 
 DownloadResourceHandler::DownloadResourceHandler(
@@ skipping 158 matching lines @@
 }
 
 bool DownloadResourceHandler::OnResponseCompleted(
     int request_id,
     const net::URLRequestStatus& status,
     const std::string& security_info) {
   VLOG(20) << __FUNCTION__ << "()" << DebugString()
            << " request_id = " << request_id
            << " status.status() = " << status.status()
            << " status.error() = " << status.error();
-  net::Error error_code = (status.status() == net::URLRequestStatus::FAILED) ?
-      static_cast<net::Error>(status.error()) : net::OK;
+  net::Error error_code = net::OK;
+  if (status.status() == net::URLRequestStatus::FAILED)
+    error_code = static_cast<net::Error>(status.error());  // Normal case.
+  // ERR_CONNECTION_CLOSED is allowed since a number of servers in the wild
+  // advertise a larger Content-Length than the amount of bytes in the message
+  // body, and then close the connection. Other browsers - IE8, Firefox 4.0.1,
+  // and Safari 5.0.4 - treat the download as complete in this case, so we
+  // follow their lead.
+  if (error_code == net::ERR_CONNECTION_CLOSED)
+    error_code = net::OK;
+  InterruptReason reason =
+      ConvertNetErrorToInterruptReason(error_code,
+                                       DOWNLOAD_INTERRUPT_FROM_NETWORK);
+  if ((status.status() == net::URLRequestStatus::CANCELED) &&
+      (status.error() == net::ERR_ABORTED)) {
+    // TODO(ahendrickson) -- Find a better set of codes to use here, as
+    // CANCELED/ERR_ABORTED can occur for reasons other than user cancel.
+    reason = DOWNLOAD_INTERRUPT_REASON_USER_CANCELED;  // User canceled.
+  }
   if (!download_id_.IsValid())
     CallStartedCB(error_code);
   // We transfer ownership to |DownloadFileManager| to delete |buffer_|,
   // so that any functions queued up on the FILE thread are executed
   // before deletion.
   BrowserThread::PostTask(
       BrowserThread::FILE, FROM_HERE,
       NewRunnableMethod(download_file_manager_,
                         &DownloadFileManager::OnResponseCompleted,
                         download_id_,
-                        error_code,
+                        reason,
                         security_info));
   buffer_ = NULL;  // The buffer is longer needed by |DownloadResourceHandler|.
   read_buffer_ = NULL;
   return true;
 }
 
 void DownloadResourceHandler::OnRequestClosed() {
   UMA_HISTOGRAM_TIMES("SB2.DownloadDuration",
                       base::TimeTicks::Now() - download_start_time_);
 }
@@ skipping 52 matching lines @@
                             " render_view_id_ = " "%d"
                             " save_info_.file_path = \"%" PRFilePath "\""
                             " }",
                             request_->url().spec().c_str(),
                             download_id_.local(),
                             global_id_.child_id,
                             global_id_.request_id,
                             render_view_id_,
                             save_info_.file_path.value().c_str());
 }