SFTP client "stalled" during lower bandwidth

[Amol Parekh <am...@in.ibm.com>]

<http://apache-mina.10907.n7.nabble.com/file/t2211/Stalled_Issue.png> 

While uploading a file of size 5MB with upload bandwidth 50kb/s we are
receiving *stalled* message on client.

As per log, Nio2Session.handleReadCycleCompletion(..) take almost 30 sec to
receive next packet

[DEBUG] 2019-12-11 01:*31:31*.262 [sshd-SshServer[16f7c8c1]-nio2-thread-1]   
o.a.s.c.i.n.Nio2Session
org.apache.sshd.common.io.nio2.Nio2Session.handleReadCycleCompletion(Nio2Session.java:334)
{} - handleReadCycleCompletion(Nio2Session[local=/9.202.179.110:2225,
remote=/9.204.73.51:52775]) read 2600 bytes

[DEBUG] 2019-12-11 01:*31:47*.245 [sshd-SshServer[16f7c8c1]-nio2-thread-2]   
o.a.s.c.i.n.Nio2Session
org.apache.sshd.common.io.nio2.Nio2Session.handleReadCycleCompletion(Nio2Session.java:334)
{} - handleReadCycleCompletion(Nio2Session[local=/9.202.179.110:2225,
remote=/9.204.73.51:52775]) read 3900 bytes


[DEBUG] 2019-12-11 01:*32:17*.341 [sshd-SshServer[16f7c8c1]-nio2-thread-3]   
o.a.s.c.i.n.Nio2Session
org.apache.sshd.common.io.nio2.Nio2Session.handleReadCycleCompletion(Nio2Session.java:334)
{} - handleReadCycleCompletion(Nio2Session[local=/9.202.179.110:2225,
remote=/9.204.73.51:52775]) read 2600 bytes



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