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From "Dan Armbrust (JIRA)" <>
Subject [jira] Issue Comment Edited: (NET-181) tftp client limited to ~32 MB file sizes
Date Sat, 23 Feb 2008 23:32:20 GMT


armbrust edited comment on NET-181 at 2/23/08 3:31 PM:

Attached file is same patch as above.

      was (Author: armbrust):
    Same patch as above.
> tftp client limited to ~32 MB file sizes
> ----------------------------------------
>                 Key: NET-181
>                 URL:
>             Project: Commons Net
>          Issue Type: Improvement
>         Environment: All
>            Reporter: Dan Armbrust
>            Priority: Minor
>         Attachments:
> I just noticed that the TFTPClient class does not support a block wraparound - hence,
when the block number exceeds the max allowed by the rfc (65535) - about a 32 mb file - bad
things will happen.
> I can't find any rfc that specifies how the wraparound is supposed to occur, but this
wiki page mentions it:
> And I am working on implementing a TFTPServer - and in my tests with the tftp client
that is shipped with fedora, I have determined that that tftp client expects the next block
number after 65535 to be 0.
> So it appears that the TFTPClient should wrap its block number so that it properly supports
larger files.

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