[jira] Closed: (FTPSERVER-112) Connection is closed by remote server without waiting for client

[Niklas Gustavsson (JIRA)]

     [ 
https://issues.apache.org/jira/browse/FTPSERVER-112?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Niklas Gustavsson closed FTPSERVER-112.
---------------------------------------

       Resolution: Fixed
    Fix Version/s: 1.0-M2
         Assignee: Niklas Gustavsson

Patch commited, thanks!

commit -m "Fix for closing connections before a reply has been sent 
(FTPSERVER-112). Patch by Rico Neubauer." 
C:/home/niklas/workspaces/apache/ftpserver/core/src/java/org/apache/ftpserver/listener/mina/FtpResponseEncoder.java
    Sending        
home/niklas/workspaces/apache/ftpserver/core/src/java/org/apache/ftpserver/listener/mina/FtpResponseEncoder.java
    Transmitting file data ...
    Committed revision 588620.

> Connection is closed by remote server without waiting for client
> ----------------------------------------------------------------
>
>                 Key: FTPSERVER-112
>                 URL: https://issues.apache.org/jira/browse/FTPSERVER-112
>             Project: FtpServer
>          Issue Type: Bug
>          Components: Core
>            Reporter: Rico Neubauer
>            Assignee: Niklas Gustavsson
>             Fix For: 1.0-M2
>
>         Attachments: apache-ftpserver-112-patch.patch
>
>
> FTP-Server is using MinaListener as listener class and the corresponding 
> MinaFtpResponseOutput to write the replies.
> When sending QUIT to the server, a reply "200 Goodbye." is send back and 
> after that the connection is closed from the server. The problem here is that 
> the reply is sent asynchronously and the connection is closed before this 
> happen.
> MinaFtpResponseOutput#write:
> public void write(FtpReply response) throws IOException {
>     session.write(response);
> }
> where session is IoSession interface. The following is the javadoc for this 
> method:
> Writes the specified message to remote peer. This operation is asynchronous;
> [EMAIL PROTECTED] IoHandler#messageSent(IoSession, Object)} will be invoked 
> when the message is actually sent to remote peer. You can also wait for the 
> returned [EMAIL PROTECTED] WriteFuture} if you want to wait for the message 
> actually written.
> And in the end the Apache QUIT impl:
> session.resetState();
> out.write(FtpReplyUtil.translate(session,FtpReply.REPLY_221_CLOSING_CONTROL_CONNECTION,
>  "QUIT", null));   
> connection.getServerContext().getConnectionManager().closeConnection(connection);
> Bottom line: Before actually the client receives the reply, the connection is
> closed. This is happening with certain FTP clients, e.g. FileZilla:
> Command:        PWD
> Response:       257 "/" is current directory.
> Status:         Directory listing successful
> Command:        quit
> Error:          Disconnected from server 

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