baiglin commented on issue #904:
URL: https://github.com/apache/mina-sshd/issues/904#issuecomment-4795749055
Hi Thomas,
I know how hard in such case implement MDC would be. It is more the only
simple way we would have to identify a session would be by logging both the
remote connect address and the **local address** to have the exact socket as we
have simultaneously several connections to the same destination. Still inside
the same session we could have different channel, here I hav a prod example
2026/06/22 14:46:57.953000
universal-distributor-dispatcher-genericloop-7569f87f67-fjl9k DDS_UDD#0-0 APP
DEBUG <o.a.s.s.c.i.DefaultSftpClient$SftpChannelSubsystem#0 TID#00000>
genericLoop [sshd-SshClient[1abf38d1]-nio2-thread-5] {}
handleWindowAdjust(SftpChannelSubsystem[id=1,
recipient=1]-ClientSessionImpl[[email protected]/50.50.50.50:22][sftp])
SSH_MSG_CHANNEL_WINDOW_ADJUST window=131052
2026/06/22 14:46:57.952000
universal-distributor-dispatcher-genericloop-7569f87f67-fjl9k DDS_UDD#0-0 APP
DEBUG <o.a.s.s.c.i.DefaultSftpClient$SftpChannelSubsystem#0 TID#00000>
genericLoop [sshd-SshClient[1abf38d1]-nio2-thread-2] {}
handleWindowAdjust(SftpChannelSubsystem[id=0,
recipient=0]-ClientSessionImpl[[email protected]/50.50.50.50:22][sftp])
SSH_MSG_CHANNEL_WINDOW_ADJUST window=131052
2026/06/22 14:46:57.870000
universal-distributor-dispatcher-genericloop-7569f87f67-fjl9k DDS_UDD#0-0 APP
DEBUG <o.a.s.s.c.i.DefaultSftpClient$SftpChannelSubsystem#0 TID#00000>
genericLoop [sshd-SshClient[1abf38d1]-nio2-thread-8] {}
handleWindowAdjust(SftpChannelSubsystem[id=1,
recipient=1]-ClientSessionImpl[[email protected]/50.50.50.50:22][sftp])
SSH_MSG_CHANNEL_WINDOW_ADJUST window=131052
2026/06/22 14:46:57.869000
universal-distributor-dispatcher-genericloop-7569f87f67-fjl9k DDS_UDD#0-0 APP
WARN <c.a.d.d.t.s.s.l.SetupSessionListener#0 TID#00000> genericLoop
[sshd-SshClient[1abf38d1]-nio2-thread-11] {DOMAIN=RMS, MEDIA_TYPE=SFTP,
DROPBOX=*, PROFILE=RMS_BFF_dest, CORR_ID=d2d0f215-c388-4307-9900-a8f9a2768c2b,
RUN_ID=a4cb8ec9-d1d1-4046-ac5e-fe124fc87690, OL_ID=3693281135,
FILE_NAME=PRD.RMS.NFS.D260622.T120000.AMA.SWA.A.00039.csv.gz, SUBSCRIBER=WN,
SSH_HOST=xxxx.com, SSH_PORT=22} Channel 1 has limited window size (0 bytes,
expected 2097152): server may be rate-limiting this connection, throughput may
be throttled
2026/06/22 14:46:57.869000
universal-distributor-dispatcher-genericloop-7569f87f67-fjl9k DDS_UDD#0-0 APP
DEBUG <o.a.s.c.s.ClientConnectionService#0 TID#00000> genericLoop
[sshd-SshClient[1abf38d1]-nio2-thread-11] {}
channelOpenConfirmation(SftpChannelSubsystem[id=1,
recipient=-1]-ClientSessionImpl[[email protected]/50.50.50.50:22][sftp])
SSH_MSG_CHANNEL_OPEN_CONFIRMATION sender=1, window-size=0, packet-size=32768
the id and recipient are not unique if those are the channel identifier, so
it is hard to correlate exactly all logs.
Maybe I am wrong but I do not see obvious correlator here.
Thnks for the feedback
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