Return ERR_INTERNET_DISCONNECTED in place of ERR_NAME_NOT_RESOLVED and ERR_ADDRESS_UNREACHABLE, when the user is in offline mode.

This initial changelist includes the implementation just for Windows.

BUG=53473
TEST=unplug network cable, try to connect to www.google.com --> should get the error ERR_INTERNET_DISCONNECTED. Next, try connecting directly to an IP address --> should get the error ERR_INTERNET_DISCONNECTED.
Review URL: http://codereview.chromium.org/3634002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@62050 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 8 insertions, 0 deletions

diff --git a/net/socket/tcp_client_socket_win.cc b/net/socket/tcp_client_socket_win.cc
index e6d6b77..0275f18 100644
--- a/net/socket/tcp_client_socket_win.cc
+++ b/net/socket/tcp_client_socket_win.cc
@@ -16,6 +16,7 @@
 #include "net/base/net_errors.h"
 #include "net/base/net_log.h"
 #include "net/base/net_util.h"
+#include "net/base/network_change_notifier.h"
 #include "net/base/sys_addrinfo.h"
 #include "net/base/winsock_init.h"
 
@@ -109,6 +110,13 @@ int MapConnectError(int os_error) {
       int net_error = MapWinsockError(os_error);
       if (net_error == ERR_FAILED)
         return ERR_CONNECTION_FAILED;  // More specific than ERR_FAILED.
+
+      // Give a more specific error when the user is offline.
+      if (net_error == ERR_ADDRESS_UNREACHABLE &&
+          NetworkChangeNotifier::IsOffline()) {
+        return ERR_INTERNET_DISCONNECTED;
+      }
+
       return net_error;
     }
   }