Sreedhar J created SSHD-1074:
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Summary: Too many SSH_MSG_CHANNEL_WINDOW_ADJUST requests were
sent by Server
Key: SSHD-1074
URL: https://issues.apache.org/jira/browse/SSHD-1074
Project: MINA SSHD
Issue Type: Question
Reporter: Sreedhar J
During the file transfer to Apache SFTP Server, I see lot of
SSH_MSG_CHANNEL_WINDOW_ADJUST requests are sent by Server to client.
does it mean not enough buffers to handle?
Here are the log entries
2020-09-02 21:54:28,946 [system-thread-1] DEBUG SftpSubsystem -
doSendStatus(ServerSessionImpl[admin@/10.84.41.27:60825])[id=1378]
SSH_FXP_STATUS (substatus=SSH_FX_OK, lang=, msg=)
2020-09-02 21:54:28,946 [system-thread-1] DEBUG ServerSessionImpl -
encode(ServerSessionImpl[admin@/10.84.41.27:60825]) packet #1431 sending
command=94[SSH_MSG_CHANNEL_DATA] len=30
2020-09-02 21:54:28,947 [system-thread-1] DEBUG ChannelSession -
sendWindowAdjust(ChannelSession[id=0,
recipient=0]-ServerSessionImpl[admin@/10.84.41.27:60825])
SSH_MSG_CHANNEL_WINDOW_ADJUST len=1050400
2020-09-02 21:54:28,947 [system-thread-1] DEBUG ServerSessionImpl -
encode(ServerSessionImpl[admin@/10.84.41.27:60825]) packet #1432 sending
command=93[SSH_MSG_CHANNEL_WINDOW_ADJUST] len=9
2020-09-02 21:54:28,947 [system-thread-1] DEBUG Window - Increase
Window[server/local](ChannelSession[id=0,
recipient=0]-ServerSessionImpl[admin@/10.84.41.27:60825]) by 1050400 up to
2097152
2020-09-02 21:54:29,022 [NioProcessor-2 ] DEBUG ChannelSession -
handleData(ChannelSession[id=0,
recipient=0]-ServerSessionImpl[admin@/10.84.41.27:60825]) SSH_MSG_CHANNEL_DATA
len=16384
21:54:30,471 [system-thread-1] DEBUG SftpSubsystem -
doSendStatus(ServerSessionImpl[admin@/10.84.41.27:60825])[id=1410]
SSH_FXP_STATUS (substatus=SSH_FX_OK, lang=, msg=)
2020-09-02 21:54:30,471 [system-thread-1] DEBUG ServerSessionImpl -
encode(ServerSessionImpl[admin@/10.84.41.27:60825]) packet #1464 sending
command=94[SSH_MSG_CHANNEL_DATA] len=30
2020-09-02 21:54:30,471 [system-thread-1] DEBUG ChannelSession -
sendWindowAdjust(ChannelSession[id=0,
recipient=0]-ServerSessionImpl[admin@/10.84.41.27:60825])
SSH_MSG_CHANNEL_WINDOW_ADJUST len=1050400
2020-09-02 21:54:30,471 [system-thread-1] DEBUG ServerSessionImpl -
encode(ServerSessionImpl[admin@/10.84.41.27:60825]) packet #1465 sending
command=93[SSH_MSG_CHANNEL_WINDOW_ADJUST] len=9
2020-09-02 21:54:30,471 [system-thread-1] DEBUG Window - Increase
Window[server/local](ChannelSession[id=0,
recipient=0]-ServerSessionImpl[admin@/10.84.41.27:60825]) by 1050400 up to
2097152
2020-09-02 21:54:30,487 [NioProcessor-2 ] DEBUG ChannelSession -
handleData(ChannelSession[id=0,
recipient=0]-ServerSessionImpl[admin@/10.84.41.27:60825]) SSH_MSG_CHANNEL_DATA
len=16384
2020-09-02 21:54:30,502 [NioProcessor-2 ] DEBUG ChannelSession -
handleData(ChannelSession[id=0,
recipient=0]-ServerSessionImpl[admin@/10.84.41.27:60825]) SSH_MSG_CHANNEL_DATA
len=16384
2020-09-02 21:54:30,502 [system-thread-1] DEBUG SftpSubsystem -
process(ServerSessionImpl[admin@/10.84.41.27:60825])[length=32821,
type=SSH_FXP_WRITE, id=1411] processing
2020-09-
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