Hi Lahiru !
I'm creating many SftpChannel in multiple Session and I'm facing the same
issue (e.g. 'Packet corrupt' or 'connection is closed by foreign host').
In order to solve this issue, I've introduce an retry mechanism in my code,
so that a new Session is created an openend when such error are detected.
I know it is not the best solution, but it was easier to do this rather
than modifying JCraft source code to make it thread safe.
Does anybody encounter such concurrency issue ?
G.
2014-10-07 20:34 GMT+02:00 Lahiru Gunathilake <glah...@gmail.com>:
> Hi Users,
>
> And when I remove the threadpool an still submit a very large load I can
> see I am getting the following error intermittently,
>
> com.jcraft.jsch.JSchException: Packet corrupt
>
>
> at com.jcraft.jsch.Session.start_discard(Session.java:1049)
>
> at com.jcraft.jsch.Session.read(Session.java:956)
>
> at com.jcraft.jsch.UserAuthNone.start(UserAuthNone.java:56)
>
> at com.jcraft.jsch.Session.connect(Session.java:389)
>
> at com.jcraft.jsch.Session.connect(Session.java:183)
>
>
> Regards
>
> Lahiru
>
> On Tue, Oct 7, 2014 at 2:18 PM, Lahiru Gunathilake <glah...@gmail.com>
> wrote:
>
>> Hi All,
>>
>> I have extended the JCraft library to authenticate my servers with a
>> token and everything works fine when I use in the serial mode. But when I
>> moved to a thread pool and try to share the JCraftSession and try to create
>> multiple channels in large number of threads (I have already increased my
>> maxSessionCount in sshd_config) I get the following error and I am not sure
>> what is really going on.
>>
>> Every 20-30 request I get the below error.
>>
>>
>> "com.jcraft.jsch.JSchException: channel is not opened."
>>
>>
>> Anybody using the sessions and creating channels concurrently ? I am not
>> synchronizing the session in each thread ? Should I synchronize the session
>> object if I am using in multi-threaded mode ?
>>
>> Regards
>> Lahiru
>>
>> --
>> Research Assistant
>> Science Gateways Group
>> Indiana University
>>
>
>
>
> --
> Research Assistant
> Science Gateways Group
> Indiana University
>
>
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