satishtedla opened a new issue, #432:
URL: https://github.com/apache/mina-sshd/issues/432
### Version
2.5.0 & 2.5.1
### Bug description
Huge File transfer (>5GB) to AIX host through SSH key credentials is always
getting hung and SocketTimeoutException is reported
- Hang with SSH Key credentials + AIX is unpredictable. At times, File
transfer hangs after transferring 300MB and at times at 2GB, 4.9GB too.
- Application uses Apache Mina SSHD client (2.5.0)
- Packet size configured for file transfer - 2400 bytes
- During the hang, Below is the exception stack captured in logs:
- ERROR - flush(ChannelOutputStream[ChannelExec[id=195,
recipient=0]-ClientSessionImpl[xxxx@localhost/x.x.x.x:xx]]
SSH_MSG_CHANNEL_DATA) failed (SocketTimeoutException) to wait for space of
len=24576: waitForCondition(Window[client/remote](ChannelExec[id=195,
recipient=0]-ClientSessionImpl[xxxx@localhost/. xxx.x.x.x:xx])) timeout
exceeded: 120000
2023-10-03 17:15:47,703 [1069:CA6C8BB6] ERROR -
flush(ChannelOutputStream[ChannelExec[id=195,
recipient=0]-ClientSessionImpl[xxxx@localhost/xxx.x.x.x:xx]]
SSH_MSG_CHANNEL_DATA) wait for space len=24576 exception details
java.net.SocketTimeoutException:
waitForCondition(Window[client/remote](ChannelExec[id=195,
recipient=0]-ClientSessionImpl[xxxx@localhost/xxx.x.x.x:xx])) timeout exceeded:
120000
at
org.apache.sshd.common.channel.Window.waitForCondition(Window.java:307)
at org.apache.sshd.common.channel.Window.waitForSpace(Window.java:255)
at
org.apache.sshd.common.channel.ChannelOutputStream.flush(ChannelOutputStream.java:197)
at
org.apache.sshd.common.channel.ChannelOutputStream.write(ChannelOutputStream.java:134)
............................................................................................................
............................................................................................................
............................................................................................................
at java.lang.Thread.run(Thread.java:825)
+ Tried to increase the sshd channel WAIT_FOR_SPACE_TIMEOUT from default 30
secs upto 10 mins but it did not help. Post the configured timeout, Above
exception was reported.
PropertyResolverUtils.updateProperty(sshClient,
ChannelOutputStream.WAIT_FOR_SPACE_TIMEOUT, 120000);
### Actual behavior
File transfer fails with a SocketTimeoutException
### Expected behavior
File transfer must succeed with out any errors
### Relevant log output
```Shell
- Application uses Apache Mina SSHD client (2.5.0)
- Packet size configured for file transfer - 2400 bytes
- During the hang, Below is the exception stack captured in logs:
- ERROR - flush(ChannelOutputStream[ChannelExec[id=195,
recipient=0]-ClientSessionImpl[xxxx@localhost/x.x.x.x:xx]]
SSH_MSG_CHANNEL_DATA) failed (SocketTimeoutException) to wait for space of
len=24576: waitForCondition(Window[client/remote](ChannelExec[id=195,
recipient=0]-ClientSessionImpl[xxxx@localhost/. xxx.x.x.x:xx])) timeout
exceeded: 120000
2023-10-03 17:15:47,703 [1069:CA6C8BB6] ERROR -
flush(ChannelOutputStream[ChannelExec[id=195,
recipient=0]-ClientSessionImpl[xxxx@localhost/xxx.x.x.x:xx]]
SSH_MSG_CHANNEL_DATA) wait for space len=24576 exception details
java.net.SocketTimeoutException:
waitForCondition(Window[client/remote](ChannelExec[id=195,
recipient=0]-ClientSessionImpl[xxxx@localhost/xxx.x.x.x:xx])) timeout exceeded:
120000
at
org.apache.sshd.common.channel.Window.waitForCondition(Window.java:307)
at org.apache.sshd.common.channel.Window.waitForSpace(Window.java:255)
at
org.apache.sshd.common.channel.ChannelOutputStream.flush(ChannelOutputStream.java:197)
at
org.apache.sshd.common.channel.ChannelOutputStream.write(ChannelOutputStream.java:134)
.............
.............
.............
at java.lang.Thread.run(Thread.java:825)
+ Tried to increase the sshd channel WAIT_FOR_SPACE_TIMEOUT from default 30
secs upto 10 mins but it did not help. Post the configured timeout, Above
exception was reported.
PropertyResolverUtils.updateProperty(sshClient,
ChannelOutputStream.WAIT_FOR_SPACE_TIMEOUT, 120000);
```
### Other information
_No response_
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