Sreedhar J created SSHD-1207:
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Summary: Large file get using WinSCP with Apache SFTP Server is
not working
Key: SSHD-1207
URL: https://issues.apache.org/jira/browse/SSHD-1207
Project: MINA SSHD
Issue Type: Question
Reporter: Sreedhar J
We have been using Apache SSHD version 2.5.1 for SFTP Server functionaity and
it was working very well with all the sftp clients. Recently we have upgraded
2.7.0 and facing issues with largefile downloads using WinSCP. Entire file
is not getting downloaded. Some time with out downloading the entire file
WinSCP is showing the transfer as complete. In the Apache SSHD logs, I see
many EOF status messages to the client. Not sure why so many EOF messages are
exchanged between the client and Server.
04 Aug 2021 21:38:10,841 [sshd-SftpSubsystem-46473-thread-1] DEBUG Nio2Session
- writeBuffer(Nio2Session[local=/10.15.102.66:59119,
remote=10.84.42.167/10.84.42.167:59334]) writing 16448 bytes
04 Aug 2021 21:38:10,842 [sshd-SftpSubsystem-46473-thread-1] DEBUG
SftpSubsystem -
process(ServerSessionImpl[[email protected]/10.84.42.167:59334])[length=53,
type=SSH_FXP_READ, id=4884997] processing
04 Aug 2021 21:38:10,842 [sshd-SshServer[6ad1bbb8](port=59119)-nio2-thread-1]
DEBUG ServerSessionImpl -
encode(ServerSessionImpl[[email protected]/10.84.42.167:59334]) packet
#149 sending command=94[SSH_MSG_CHANNEL_DATA] len=10734
04 Aug 2021 21:38:10,842 [sshd-SftpSubsystem-46473-thread-1] DEBUG
SftpSubsystem -
doSendStatus(ServerSessionImpl[[email protected]/10.84.42.167:59334])[id=4884997]
SSH_FXP_STATUS (substatus=SSH_FX_EOF, lang=, msg=End of file)
04 Aug 2021 21:38:10,842 [sshd-SftpSubsystem-46473-thread-1] DEBUG
SftpSubsystem -
process(ServerSessionImpl[[email protected]/10.84.42.167:59334])[length=53,
type=SSH_FXP_READ, id=4885253] processing
04 Aug 2021 21:38:10,842 [sshd-SftpSubsystem-46473-thread-1] DEBUG
SftpSubsystem -
doSendStatus(ServerSessionImpl[[email protected]/10.84.42.167:59334])[id=4885253]
SSH_FXP_STATUS (substatus=SSH_FX_EOF, lang=, msg=End of file)
04 Aug 2021 21:38:10,843 [sshd-SshServer[6ad1bbb8](port=59119)-nio2-thread-1]
DEBUG Nio2Session - writeBuffer(Nio2Session[local=/10.15.102.66:59119,
remote=10.84.42.167/10.84.42.167:59334]) writing 10800 bytes
04 Aug 2021 21:38:10,843 [sshd-SshServer[6ad1bbb8](port=59119)-nio2-thread-1]
DEBUG ServerSessionImpl -
encode(ServerSessionImpl[[email protected]/10.84.42.167:59334]) packet
#150 sending command=94[SSH_MSG_CHANNEL_DATA] len=41
04 Aug 2021 21:38:10,843 [sshd-SshServer[6ad1bbb8](port=59119)-nio2-thread-1]
DEBUG Nio2Session - writeBuffer(Nio2Session[local=/10.15.102.66:59119,
remote=10.84.42.167/10.84.42.167:59334]) writing 96 bytes
04 Aug 2021 21:38:10,843 [sshd-SshServer[6ad1bbb8](port=59119)-nio2-thread-1]
DEBUG ServerSessionImpl -
encode(ServerSessionImpl[[email protected]/10.84.42.167:59334]) packet
#151 sending command=94[SSH_MSG_CHANNEL_DATA] len=41
04 Aug 2021 21:38:10,843 [sshd-SshServer[6ad1bbb8](port=59119)-nio2-thread-1]
DEBUG Nio2Session - writeBuffer(Nio2Session[local=/10.15.102.66:59119,
remote=10.84.42.167/10.84.42.167:59334]) writing 96 bytes
04 Aug 2021 21:38:11,038 [sshd-SshServer[6ad1bbb8](port=59119)-nio2-thread-8]
DEBUG ChannelSession - handleData(ChannelSession[id=0,
recipient=256]-ServerSessionImpl[[email protected]/10.84.42.167:59334])
SSH_MSG_CHANNEL_DATA len=57
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