Fix compatibility problems with FileZilla FTP Server.

net/ftp/ftp_network_transaction.cc

 // Copyright (c) 2008 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/ftp/ftp_network_transaction.h"
 
 #include "base/compiler_specific.h"
 #include "base/string_util.h"
 #include "net/base/connection_type_histograms.h"
 #include "net/base/escape.h"
@@ skipping 905 matching lines @@
     case ERROR_CLASS_PERMANENT_ERROR:
       // Code 550 means "Failed to open file". Other codes are unrelated,
       // like "Not logged in" etc.
       if (response.status_code != 550)
         return Stop(ERR_FAILED);
 
       DCHECK(!retr_failed_);  // Should not get here twice.
       retr_failed_ = true;
 
       // It's possible that RETR failed because the path is a directory.
-      // Try CWD next, to see if that's the case.
-      next_state_ = STATE_CTRL_WRITE_CWD;
+      // We're going to try CWD next, but first send a PASV one more time,
+      // because some FTP servers, including FileZilla, require that.
+      // See http://crbug.com/25316.
+      next_state_ = STATE_CTRL_WRITE_PASV;

[wtc, 2009/10/22 22:15:29]

It's not clear how we arrange to try CWD after the PASV is
done.

       break;
     default:
       NOTREACHED();
       return Stop(ERR_UNEXPECTED);
   }
   return OK;
 }
 
 // MDMT command
 int FtpNetworkTransaction::DoCtrlWriteMDTM() {
@@ skipping 144 matching lines @@
   read_data_buf_->data()[0] = 0;
   return data_socket_->Read(read_data_buf_, read_data_buf_len_,
                             &io_callback_);
 }
 
 int FtpNetworkTransaction::DoDataReadComplete(int result) {
   return result;
 }
 
 }  // namespace net