Re: [JSch-users] SFTP of large file hangs
Status: Alpha
Brought to you by:
ymnk
Menu
▾
▴
Re: [JSch-users] SFTP of large file hangs
|
From: Vikas V. <vvi...@ho...> - 2016-10-10 21:17:51
|
I have also verified that changing SFTPRekey parameter to "none" on the ProFTPD server configuration fixes the issue. So the issue definitely is that JSCH is unable to handle Rekeying from the SFTP server. Any idea how I can fix this? Help truly appreciated. Thanks, Vikas. ________________________________ From: Vikas Verma <vvi...@ho...> Sent: Monday, October 10, 2016 12:38:28 PM To: Alan Ezust Cc: jsc...@li... Subject: Re: [JSch-users] SFTP of large file hangs I just tried java -Xmx4096m -classpath "*" Sftp and it still fails. Looking at the change logs I see that there was a Rekeying issue with ProFTPD server but supposedly it was fixed in version 53. I have already tested with both 53 and 54 but no luck. Thanks, Vikas. ________________________________ From: Alan Ezust <ala...@gm...> Sent: Monday, October 10, 2016 12:09 PM To: Vikas Verma Cc: jsc...@li... Subject: Re: [JSch-users] SFTP of large file hangs Another guess: investigate what the startup command line options are for java on the system in question. Is the max heap size limited with an -Xmx option? Or is there a -d32 being passed in? On Mon, Oct 10, 2016 at 8:26 AM, Vikas Verma <vvi...@ho...<mailto:vvi...@ho...>> wrote: I was able to reproduce this in our local environment. We were able to setup ProFTPD SFTP server with default settings. After transferring about 2GB of data (using jsch) the transfer stops. I am attaching the ProFTPD logs for reference. Please help. Thanks, Vikas. ________________________________ From: Vikas Verma <vvi...@ho...<mailto:vvi...@ho...>> Sent: Wednesday, October 5, 2016 11:40:47 AM To: Alan Ezust Cc: jsc...@li...<mailto:jsc...@li...> Subject: Re: [JSch-users] SFTP of large file hangs @Alan --> Yes its running 64 bit. @Lothar --> The problem is just between Proftpd and JSCH. I am able to transfer huge files (> 4gb) to other SFTP servers from JSCH. And Proftpd works fine with other ssh clients (like the one that comes with linux). I am not sure sure about their (Partner that hosts sftp server) logging. I can reach out and ask. But their support isnt that great. Thanks, Vikas. ________________________________ From: Alan Ezust <ala...@gm...<mailto:ala...@gm...>> Sent: Wednesday, October 5, 2016 11:00:44 AM To: Vikas Verma Cc: jsc...@li...<mailto:jsc...@li...> Subject: Re: [JSch-users] SFTP of large file hangs Just wondering, is the client running jsch also running a 64 bit version of Java? On Mon, Oct 3, 2016 at 12:19 PM, Vikas Verma <vvi...@ho...<mailto:vvi...@ho...>> wrote: Can anyone please help? The SFTP server is proftpd. This looks like an old Rekeying problem between Proftpd and Jsch. I have tried JSCH version 50/51 and 54 with no luck. Thanks, Vikas. ________________________________ From: Vikas Verma <vvi...@ho...<mailto:vvi...@ho...>> Sent: Wednesday, September 14, 2016 11:43:16 AM To: jsc...@li...<mailto:jsc...@li...> Subject: SFTP of large file hangs We are having a strange issue with one of our clients (Client hosts the SFTP server. We are the client using JSCH). When we SFTP a large file to their SFTP server the file stops getting uploaded after exactly 2143990632<tel:2143990632> bytes. The JSCH connection just starts over at that point. I am including the logs. Has anyone seen this behavior before? I can use any other SFTP client with that server and they work. In the logs you will see that after my custom log prints (3 and 4) it starts putting the file. After sending 2143990632<tel:2143990632> bytes it kind of starts over and the highlighted log shows up. The file at that point does not "grow" in size on the server side. Help truly appreciated !! Thanks, Vikas. INFO: Connecting to xxx.xxx.xxx.xx port 22 INFO: Connection established INFO: Remote version string: SSH-2.0-mod_sftp/0.9.7 INFO: Local version string: SSH-2.0-JSCH-0.1.53 INFO: CheckCiphers: aes256-ctr,aes192-ctr,aes128-ctr,aes256-cbc,aes192-cbc,aes128-cbc,3des-ctr,arcfour,arcfour128,arcfour256 INFO: aes256-ctr is not available. INFO: aes192-ctr is not available. INFO: aes256-cbc is not available. INFO: aes192-cbc is not available. INFO: CheckKexes: diffie-hellman-group14-sha1,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521 INFO: CheckSignatures: ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521 INFO: SSH_MSG_KEXINIT sent INFO: SSH_MSG_KEXINIT received INFO: kex: server: diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1,rsa1024-sha1 INFO: kex: server: ssh-rsa,ssh-dss INFO: kex: server: aes256-ctr,aes192-ctr,aes128-ctr,aes128-cbc,blowfish-ctr,blowfish-cbc,cast128-cbc,arcfour256,arcfour128,3des-ctr,3des-cbc INFO: kex: server: aes256-ctr,aes192-ctr,aes128-ctr,aes128-cbc,blowfish-ctr,blowfish-cbc,cast128-cbc,arcfour256,arcfour128,3des-ctr,3des-cbc INFO: kex: server: hmac-sha1,hmac-sha1-96,hmac-md5,hmac-md5-96,hmac-ripemd160 INFO: kex: server: hmac-sha1,hmac-sha1-96,hmac-md5,hmac-md5-96,hmac-ripemd160 INFO: kex: server: zl...@op...<mailto:zl...@op...>,zlib,none INFO: kex: server: zl...@op...<mailto:zl...@op...>,zlib,none INFO: kex: server: INFO: kex: server: INFO: kex: client: ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group14-sha1,diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group1-sha1 INFO: kex: client: ssh-rsa,ssh-dss,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521 INFO: kex: client: aes128-ctr,aes128-cbc,3des-ctr,3des-cbc,blowfish-cbc INFO: kex: client: aes128-ctr,aes128-cbc,3des-ctr,3des-cbc,blowfish-cbc INFO: kex: client: hmac-md5,hmac-sha1,hmac-sha2-256,hmac-sha1-96,hmac-md5-96 INFO: kex: client: hmac-md5,hmac-sha1,hmac-sha2-256,hmac-sha1-96,hmac-md5-96 INFO: kex: client: none INFO: kex: client: none INFO: kex: client: INFO: kex: client: INFO: kex: server->client aes128-ctr hmac-md5 none INFO: kex: client->server aes128-ctr hmac-md5 none INFO: SSH_MSG_KEXDH_INIT sent INFO: expecting SSH_MSG_KEXDH_REPLY INFO: ssh_rsa_verify: signature true WARN: Permanently added 'xxx.xxx.xxx.xx' (RSA) to the list of known hosts. INFO: SSH_MSG_NEWKEYS sent INFO: SSH_MSG_NEWKEYS received INFO: SSH_MSG_SERVICE_REQUEST sent INFO: SSH_MSG_SERVICE_ACCEPT received INFO: Authentications that can continue: publickey,keyboard-interactive,password INFO: Next authentication method: publickey INFO: Authentications that can continue: password INFO: Next authentication method: password INFO: Authentication succeeded (password). -----------------------------------3 -----------------------------------4 INFO: CheckCiphers: aes256-ctr,aes192-ctr,aes128-ctr,aes256-cbc,aes192-cbc,aes128-cbc,3des-ctr,arcfour,arcfour128,arcfour256 INFO: aes256-ctr is not available. INFO: aes192-ctr is not available. INFO: aes256-cbc is not available. INFO: aes192-cbc is not available. INFO: CheckKexes: diffie-hellman-group14-sha1,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521 INFO: CheckSignatures: ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521 INFO: SSH_MSG_KEXINIT sent INFO: kex: server: diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1,rsa1024-sha1 INFO: kex: server: ssh-rsa,ssh-dss INFO: kex: server: aes256-ctr,aes192-ctr,aes128-ctr,aes128-cbc,blowfish-ctr,blowfish-cbc,cast128-cbc,arcfour256,arcfour128,3des-ctr,3des-cbc INFO: kex: server: aes256-ctr,aes192-ctr,aes128-ctr,aes128-cbc,blowfish-ctr,blowfish-cbc,cast128-cbc,arcfour256,arcfour128,3des-ctr,3des-cbc INFO: kex: server: hmac-sha1,hmac-sha1-96,hmac-md5,hmac-md5-96,hmac-ripemd160 INFO: kex: server: hmac-sha1,hmac-sha1-96,hmac-md5,hmac-md5-96,hmac-ripemd160 INFO: kex: server: zl...@op...<mailto:zl...@op...>,zlib,none INFO: kex: server: zl...@op...<mailto:zl...@op...>,zlib,none INFO: kex: server: INFO: kex: server: INFO: kex: client: ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group14-sha1,diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group1-sha1 INFO: kex: client: ssh-rsa,ssh-dss,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521 INFO: kex: client: aes128-ctr,aes128-cbc,3des-ctr,3des-cbc,blowfish-cbc INFO: kex: client: aes128-ctr,aes128-cbc,3des-ctr,3des-cbc,blowfish-cbc INFO: kex: client: hmac-md5,hmac-sha1,hmac-sha2-256,hmac-sha1-96,hmac-md5-96 INFO: kex: client: hmac-md5,hmac-sha1,hmac-sha2-256,hmac-sha1-96,hmac-md5-96 INFO: kex: client: none INFO: kex: client: none INFO: kex: client: INFO: kex: client: INFO: kex: server->client aes128-ctr hmac-md5 none INFO: kex: client->server aes128-ctr hmac-md5 none INFO: SSH_MSG_KEXDH_INIT sent INFO: expecting SSH_MSG_KEXDH_REPLY INFO: ssh_rsa_verify: signature true ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, SlashDot.org! http://sdm.link/slashdot _______________________________________________ JSch-users mailing list JSc...@li...<mailto:JSc...@li...> https://lists.sourceforge.net/lists/listinfo/jsch-users |