Preserve transport errors for OpenSSL sockets.

net/socket/ssl_client_socket_nss.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.
 
 // This file includes code SSLClientSocketNSS::DoVerifyCertComplete() derived
 // from AuthCertificateCallback() in
 // mozilla/security/manager/ssl/src/nsNSSCallbacks.cpp.
 
 /* ***** BEGIN LICENSE BLOCK *****
  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
@@ skipping 1829 matching lines @@
       LOG(WARNING) << "Couldn't invalidate SSL session: " << PR_GetError();
   } else if (rv == SECSuccess) {
     if (!handshake_callback_called_) {
       false_started_ = true;
       HandshakeSucceeded();
     }
   } else {
     PRErrorCode prerr = PR_GetError();
     net_error = HandleNSSError(prerr, true);
 
-    // Some network devices that inspect application-layer packets seem to
-    // inject TCP reset packets to break the connections when they see
-    // TLS 1.1 in ClientHello or ServerHello. See http://crbug.com/130293.
-    //
-    // Only allow ERR_CONNECTION_RESET to trigger a fallback from TLS 1.1 or
-    // 1.2. We don't lose much in this fallback because the explicit IV for CBC
-    // mode in TLS 1.1 is approximated by record splitting in TLS 1.0. The
-    // fallback will be more painful for TLS 1.2 when we have GCM support.
-    //
-    // ERR_CONNECTION_RESET is a common network error, so we don't want it
-    // to trigger a version fallback in general, especially the TLS 1.0 ->
-    // SSL 3.0 fallback, which would drop TLS extensions.
-    if (prerr == PR_CONNECT_RESET_ERROR &&
-        ssl_config_.version_max >= SSL_PROTOCOL_VERSION_TLS1_1) {
-      net_error = ERR_SSL_PROTOCOL_ERROR;
-    }
-
     // If not done, stay in this state
     if (net_error == ERR_IO_PENDING) {
       GotoState(STATE_HANDSHAKE);
     } else {
       PostOrRunCallback(
           FROM_HERE,
           base::Bind(&AddLogEventWithCallback, weak_net_log_,
                      NetLog::TYPE_SSL_HANDSHAKE_ERROR,
                      CreateNetLogSSLErrorCallback(net_error, prerr)));
     }
@@ skipping 1737 matching lines @@
 scoped_refptr<X509Certificate>
 SSLClientSocketNSS::GetUnverifiedServerCertificateChain() const {
   return core_->state().server_cert.get();
 }
 
 ServerBoundCertService* SSLClientSocketNSS::GetServerBoundCertService() const {
   return server_bound_cert_service_;
 }
 
 }  // namespace net