I have run my sftpclient against different sftp server and got the same exceptions. Let me investigate more and I will get back to you again. Thanks for giving ur valuable time to this discussion. I really appreciate ur help...
gnodet wrote: > > How did you configure the sshd server ? SFTP is not enabled by default and > it looks like it has not been enabled. > > On Thu, Apr 12, 2012 at 19:25, manojkumar16 <[email protected]> > wrote: > >> >> Hi, >> I have attached a java file ApacheSshClient.java. It makes a connection >> to >> sftpserver using apache ssh library. You need to put mina-core and >> sshd-core >> jar in the classpath. After running this class, I get following exception >> at >> client side: >> >> 2012-04-12 22:46:18,623 [NioProcessor-2 ] INFO UserAuthPassword >> - Received SSH_MSG_USERAUTH_SUCCESS >> Authenticated.... >> 2012-04-12 22:46:18,629 [main ] INFO ChannelSubsystem >> - Send SSH_MSG_CHANNEL_OPEN on channel 0 >> 2012-04-12 22:46:18,631 [NioProcessor-2 ] INFO ClientSessionImpl >> - Received SSH_MSG_CHANNEL_OPEN_CONFIRMATION on channel 0 >> 2012-04-12 22:46:18,632 [NioProcessor-2 ] INFO ChannelSubsystem >> - Send SSH_MSG_CHANNEL_REQUEST subsystem... >> 2012-04-12 22:46:18,633 [InputStreamPump] INFO ChannelSubsystem >> - Send SSH_MSG_CHANNEL_EOF on channel 0 >> 2012-04-12 22:46:18,636 [NioProcessor-2 ] INFO ClientSessionImpl >> - Closing session >> 2012-04-12 22:46:18,637 [NioProcessor-2 ] INFO ChannelSubsystem >> - Closing channel 0 immediately >> >> >> >> I am using apache sshd server. At the server side, I got below >> exceptions: >> >> 2012-04-12 22:46:18,633 [NioProcessor-16] INFO ChannelSession >> - Received channel request: subsystem >> 2012-04-12 22:46:18,639 [NioProcessor-16] INFO ChannelSession >> - Received SSH_MSG_CHANNEL_EOF on channel 0 >> 2012-04-12 22:46:18,639 [NioProcessor-16] INFO ServerSession >> - Closing session >> 2012-04-12 22:46:18,639 [NioProcessor-16] INFO ChannelSession >> - Closing channel 0 immediately >> 2012-04-12 22:46:18,639 [Thread-18 ] INFO ChannelSession >> - Send SSH_MSG_CHANNEL_EOF on channel 0 >> 2012-04-12 22:46:18,640 [Thread-18 ] INFO ChannelSession >> - Send SSH_MSG_CHANNEL_REQUEST exit-status on channel 0 >> 2012-04-12 22:46:18,640 [Thread-18 ] INFO ChannelSession >> - Send SSH_MSG_CHANNEL_CLOSE on channel 0 >> >> >> The server throws this exception because client sends SSH_MSG_CHANNEL_EOF >> request to the server. >> My question is why client is closing the connection after successful >> authentication? >> >> When I run ApacheSshClient.java class in debug mode, I get below >> exceptions >> at client side: >> >> 2012-04-12 22:52:42,577 [NioProcessor-2 ] INFO UserAuthPassword >> - Received SSH_MSG_USERAUTH_SUCCESS >> Authenticated.... >> 2012-04-12 22:52:48,985 [main ] INFO ChannelSubsystem >> - Send SSH_MSG_CHANNEL_OPEN on channel 0 >> 2012-04-12 22:52:49,186 [NioProcessor-2 ] INFO ClientSessionImpl >> - Received SSH_MSG_CHANNEL_OPEN_CONFIRMATION on channel 0 >> 2012-04-12 22:52:49,187 [NioProcessor-2 ] INFO ChannelSubsystem >> - Send SSH_MSG_CHANNEL_REQUEST subsystem... >> 2012-04-12 22:52:49,207 [NioProcessor-2 ] INFO ClientSessionImpl >> - Closing session >> 2012-04-12 22:52:49,210 [NioProcessor-2 ] INFO ChannelSubsystem >> - Closing channel 0 immediately >> >> >> At server side: >> >> 2012-04-12 22:52:49,195 [NioProcessor-17] INFO ChannelSession >> - Received channel request: subsystem >> 2012-04-12 22:52:49,210 [NioProcessor-17] INFO ServerSession >> - Closing session >> 2012-04-12 22:52:49,210 [NioProcessor-17] INFO ChannelSession >> - Closing channel 0 immediately >> 2012-04-12 22:52:49,228 [Thread-19 ] INFO ChannelSession >> - Send SSH_MSG_CHANNEL_EOF on channel 0 >> 2012-04-12 22:52:49,228 [Thread-19 ] INFO ChannelSession >> - Send SSH_MSG_CHANNEL_REQUEST exit-status on channel 0 >> 2012-04-12 22:52:49,228 [Thread-19 ] INFO ChannelSession >> - Send SSH_MSG_CHANNEL_CLOSE on channel 0 >> >> >> It seems, sftpserver is properly creating subsystem, but soon after >> connection gets disconnected when sftpclient closes its connection. >> >> What is the way to execute sftp specific command like put,get,pwd,cd >> etc... >> >> >> gnodet wrote: >> > >> > It's really hard to tell without more informations. >> > Make sure you enabled sftp support on the sshd server side, maybe >> provide >> > the sshd logs at debug level in order to see what happen. >> > Last, maybe a good way would be to provide a test case that I could run >> to >> > replicate your problem. >> > >> > On Thu, Apr 12, 2012 at 15:09, manojkumar16 <[email protected]> >> > wrote: >> > >> >> >> >> Hi Guillaume, >> >> There is no such thing... I will surely use the mailing lists for >> further >> >> communications. >> >> Long time back I asked for the help regarding the implementation of >> >> sftpclient using apache sshd library... >> >> My plan is to execute sftp commands in sftp subsystem mode. >> >> In my entry class, I have added chunk of code shown below: >> >> >> >> ClientChannel channel = >> >> session.createSubsystemChannel( "sftp" ); >> >> InputStream in = new ByteArrayInputStream( >> >> "ls".getBytes() ); >> >> channel.setIn(in); >> >> channel.setOut(System.out); >> >> channel.setErr(System.err); >> >> channel.open().await(); >> >> >> >> And in ChannelSubsystem.java class, below api is provided: >> >> >> >> protected void doOpen() throws Exception { >> >> super.doOpen(); >> >> log.info("Send SSH_MSG_CHANNEL_REQUEST subsystem..."); >> >> Buffer buffer = >> >> session.createBuffer(SshConstants.Message.SSH_MSG_CHANNEL_REQUEST, 0); >> >> buffer.putInt(recipient); >> >> buffer.putString("subsystem"); >> >> buffer.putBoolean(true); >> >> buffer.putString(subsystem); >> >> session.writePacket(buffer); >> >> } >> >> >> >> >> >> After executing the entry class I got following logs: >> >> 2012-04-12 18:25:14,106 [main ] INFO ChannelSubsystem >> >> - Send SSH_MSG_CHANNEL_OPEN on channel 0 >> >> 2012-04-12 18:25:18,202 [NioProcessor-2 ] INFO ClientSessionImpl >> >> - Received SSH_MSG_CHANNEL_OPEN_CONFIRMATION on channel 0 >> >> 2012-04-12 18:25:18,204 [NioProcessor-2 ] INFO ChannelSubsystem >> >> - Send SSH_MSG_CHANNEL_REQUEST subsystem... >> >> 2012-04-12 18:25:18,227 [NioProcessor-2 ] INFO ClientSessionImpl >> >> - Closing session >> >> 2012-04-12 18:25:18,230 [NioProcessor-2 ] INFO ChannelSubsystem >> >> - Closing channel 0 immediately >> >> >> >> >> >> My question here is, why is it closing the session after sending >> >> SSH_MSG_CHANNEL_REQUEST for subsystem? >> >> >> >> >> >> >> >> gnodet wrote: >> >> > >> >> > Unless there's a need for secrecy, using the mailing lists is >> usually >> a >> >> > good idea so that everyone can get involved. >> >> > >> >> > On Thu, Apr 12, 2012 at 14:47, manojkumar16 <[email protected]> >> >> > wrote: >> >> > >> >> >> >> >> >> Actually, I do not want to use Jsch library... Since, Apache sshd >> has >> >> >> provided well-written ssh library for both client and server, I >> want >> >> to >> >> >> focus more on implementing sftp client using apache sshd library. >> >> >> Can you reach me on [email protected] so that I can explain >> you >> >> >> exactly >> >> >> what I am doing for sftp client implementation using apache sshd >> >> library? >> >> >> >> >> >> >> >> >> David Latorre wrote: >> >> >> > >> >> >> > For SFTP-client support there are several options, in our case, >> we >> >> use >> >> >> > apache commons vfs with JSCH libraries. Would that work for you? >> >> >> > >> >> >> > >> >> >> > >> >> >> > >> >> >> > 2012/1/23 Guillaume Nodet <[email protected]>: >> >> >> >> Oh, I missed you were talking about sftp. The problem is that >> >> we've >> >> >> >> mostly focused on the server side, so the client side is still >> >> lacking >> >> >> >> lots of features. And the sftp support is one of them >> >> unfortunately. >> >> >> >> >> >> >> >> >> >> >> >> On Mon, Jan 23, 2012 at 09:48, Guillaume Nodet >> <[email protected]> >> >> >> wrote: >> >> >> >>> You can find a real working example of using the client side in >> >> >> Apache >> >> >> >>> Karaf: >> >> >> >>> >> >> >> >> >> >> https://github.com/apache/karaf/blob/trunk/client/src/main/java/org/apache/karaf/client/Main.java >> >> >> >>> >> >> >> >>> The basic idea is to open a channel which is either a "shell" >> >> channel >> >> >> >>> for an interactive session or an "exec" channel to execute a >> >> single >> >> >> >>> command and exit without any user interaction. >> >> >> >>> The channel has an input stream and two output streams (out and >> >> err) >> >> >> >>> which you can set to redirect to the default System.out and >> >> >> System.err >> >> >> >>> or to your own in-memory stream or whatever kind of streams you >> >> want. >> >> >> >>> >> >> >> >>> On Mon, Jan 23, 2012 at 08:16, manoj kumar >> >> <[email protected]> >> >> >> >>> wrote: >> >> >> >>>> Hi, >> >> >> >>>> >> >> >> >>>> I want to write sftp Client using apache-sshd mina client api. >> I >> >> am >> >> >> >>>> able to >> >> >> >>>> connect to sftp server using apache ssh client but I do not >> have >> >> any >> >> >> >>>> idea >> >> >> >>>> how to send sftp command to apache sshd server and how do I >> get >> >> >> result >> >> >> >>>> of >> >> >> >>>> sftp client. I am totally lost. Please guide me. I have >> confusion >> >> on >> >> >> >>>> below >> >> >> >>>> code: >> >> >> >>>> >> >> >> >>>> SshClient client = SshClient.setUpDefaultClient(); >> >> >> >>>> client.start(); >> >> >> >>>> ClientSession session = client.connect("localhost", >> >> >> >>>> port).await().getSession(); >> >> >> >>>> session.authPassword("smx", "smx"); >> >> >> >>>> ClientChannel channel = >> >> >> >>>> session.createChannel(ClientChannel.CHANNEL_SHELL); >> >> >> >>>> ByteArrayOutputStream sent = new >> ByteArrayOutputStream(); >> >> >> >>>> PipedOutputStream pipedIn = new >> >> TeePipedOutputStream(sent); >> >> >> >>>> channel.setIn(new PipedInputStream(pipedIn)); >> >> >> >>>> ByteArrayOutputStream out = new >> ByteArrayOutputStream(); >> >> >> >>>> ByteArrayOutputStream err = new >> ByteArrayOutputStream(); >> >> >> >>>> channel.setOut(out); >> >> >> >>>> channel.setErr(err); >> >> >> >>>> channel.open().await(); >> >> >> >>>> >> >> >> >>>> -- >> >> >> >>>> Thanks and Regards, >> >> >> >>>> Manoj Kumar >> >> >> >>>> 9535214528 >> >> >> >>> >> >> >> >>> >> >> >> >>> >> >> >> >>> -- >> >> >> >>> ------------------------ >> >> >> >>> Guillaume Nodet >> >> >> >>> ------------------------ >> >> >> >>> Blog: http://gnodet.blogspot.com/ >> >> >> >>> ------------------------ >> >> >> >>> FuseSource, Integration everywhere >> >> >> >>> http://fusesource.com >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> -- >> >> >> >> ------------------------ >> >> >> >> Guillaume Nodet >> >> >> >> ------------------------ >> >> >> >> Blog: http://gnodet.blogspot.com/ >> >> >> >> ------------------------ >> >> >> >> FuseSource, Integration everywhere >> >> >> >> http://fusesource.com >> >> >> > >> >> >> > >> >> >> >> >> >> -- >> >> >> View this message in context: >> >> >> >> >> >> http://old.nabble.com/sshClient-in-apache-sshd-mina-tp33186423p33675023.html >> >> >> Sent from the Apache MINA User Forum mailing list archive at >> >> Nabble.com. >> >> >> >> >> >> >> >> > >> >> > >> >> > -- >> >> > ------------------------ >> >> > Guillaume Nodet >> >> > ------------------------ >> >> > Blog: http://gnodet.blogspot.com/ >> >> > ------------------------ >> >> > FuseSource, Integration everywhere >> >> > http://fusesource.com >> >> > >> >> > >> >> >> >> -- >> >> View this message in context: >> >> >> http://old.nabble.com/sshClient-in-apache-sshd-mina-tp33186423p33675184.html >> >> Sent from the Apache MINA User Forum mailing list archive at >> Nabble.com. >> >> >> >> >> > >> > >> > -- >> > ------------------------ >> > Guillaume Nodet >> > ------------------------ >> > Blog: http://gnodet.blogspot.com/ >> > ------------------------ >> > FuseSource, Integration everywhere >> > http://fusesource.com >> > >> > >> http://old.nabble.com/file/p33676989/ApacheSshClient.java >> ApacheSshClient.java >> -- >> View this message in context: >> http://old.nabble.com/sshClient-in-apache-sshd-mina-tp33186423p33676989.html >> Sent from the Apache MINA User Forum mailing list archive at Nabble.com. >> >> > > > -- > ------------------------ > Guillaume Nodet > ------------------------ > Blog: http://gnodet.blogspot.com/ > ------------------------ > FuseSource, Integration everywhere > http://fusesource.com > > -- View this message in context: http://old.nabble.com/sshClient-in-apache-sshd-mina-tp33186423p33677310.html Sent from the Apache MINA User Forum mailing list archive at Nabble.com.
