Fix SSL error code for unexpected errSSLClosedGraceful on Mac

net/socket/ssl_client_socket_mac.cc

 // Copyright (c) 2008-2009 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 "net/socket/ssl_client_socket_mac.h"
 
 #include "base/scoped_cftyperef.h"
 #include "base/singleton.h"
 #include "base/string_util.h"
 #include "net/base/cert_verifier.h"
@@ skipping 691 matching lines @@
     next_handshake_state_ = STATE_VERIFY_CERT;
     if (status == errSSLServerAuthCompletedFlag) {
       // Override errSSLServerAuthCompletedFlag as it's not actually an error,
       // but rather an indication that we're only half way through the
       // handshake.
       handshake_interrupted_ = true;
       status = noErr;
     }
   }
 
-  if (status == errSSLClosedGraceful)
+  if (status == errSSLClosedGraceful) {
     // The server unexpectedly closed on us.
-    return ERR_UNEXPECTED;
+    return ERR_SSL_PROTOCOL_ERROR;
+  }
 
   int net_error = NetErrorFromOSStatus(status);
   if (status == noErr || IsCertificateError(net_error)) {
     server_cert_ = GetServerCert(ssl_context_);
     if (!server_cert_)
       return ERR_UNEXPECTED;
   }
   return net_error;
 }
 
@@ skipping 37 matching lines @@
   return result;
 }
 
 int SSLClientSocketMac::DoHandshakeFinish() {
   OSStatus status = SSLHandshake(ssl_context_);
 
   if (status == errSSLWouldBlock)
     next_handshake_state_ = STATE_HANDSHAKE_FINISH;
 
   if (status == errSSLClosedGraceful)
-    return ERR_UNEXPECTED;
+    return ERR_SSL_PROTOCOL_ERROR;
 
   if (status == noErr) {
     completed_handshake_ = true;
     DCHECK(next_handshake_state_ == STATE_NONE);
   }
 
   return NetErrorFromOSStatus(status);
 }
 
 int SSLClientSocketMac::DoPayloadRead() {
@@ skipping 132 matching lines @@
   if (rv < 0 && rv != ERR_IO_PENDING) {
     us->write_io_buf_ = NULL;
     return OSStatusFromNetError(rv);
   }
 
   // always lie to our caller
   return noErr;
 }
 
 }  // namespace net