I believe so. I'm using a slightly modified version of the SSHExec example from JSch and when I make the SSHExec call the amount of data that comes back is limited by 1048576 bytes. However if I played with the code and modified the int lwsize_max=0x100000 parameter in the Channel.java file that the amount of data that comes back matched the lwsize number. I was curious if there was some way that I should be better handling reading in multiples of this lwsize, that perhaps I wasn't doing currently, or to see if this was a bug. As I was reading the SSH Protocol spec it was stating that the client should be able to adjust the window size coming back. I just didn't see how we were able to adjust the window size via code in JSch. It appeared that the failure in my case was being that after the 1048576 bytes was read in the channel was closed, so I couldn't read any more in.
--- On Wed, 6/4/08, Atsuhiko Yamanaka <[EMAIL PROTECTED]> wrote:
> From: Atsuhiko Yamanaka <[EMAIL PROTECTED]>
> Subject: Re: [JSch-users] initial window size fixed...
> To: [EMAIL PROTECTED]
> Cc: jsch-users@lists.sourceforge.net
> Date: Wednesday, June 4, 2008, 9:55 PM
> Hi,
>
> +-From: Bubba Meetze <[EMAIL PROTECTED]> -------
> |_Date: Thu, 29 May 2008 17:51:32 -0700 (PDT) __
> |
> |I was running into a problem where my data coming back
> |from an SSHExec session was getting limited to 1048576
> |bytes, then I realized that what I was hitting was the
> |initial window size that is fixed in the Channel.java
> |code.
>
> What kind of failure do you have, by the fixed window size?
> That window size is for the packet pool and
> that pool has been be used for the flow control.
> Is your concern related to the packet size from the remote?
>
> Sincerely,
> --
> Atsuhiko Yamanaka
> JCraft,Inc.
> 1-14-20 HONCHO AOBA-KU,
> SENDAI, MIYAGI 980-0014 Japan.
> Tel +81-22-723-2150
> +1-415-578-3454
> Fax +81-22-224-8773
> Skype callto://jcraft/
SSHExec.java
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