[jira] Closed: (NET-181) tftp client limited to ~32 MB file sizes

["Rory Winston (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/NET-181?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Rory Winston closed NET-181.
----------------------------

       Resolution: Fixed
    Fix Version/s: 2.0
                   1.5

> tftp client limited to ~32 MB file sizes
> ----------------------------------------
>
>                 Key: NET-181
>                 URL: https://issues.apache.org/jira/browse/NET-181
>             Project: Commons Net
>          Issue Type: Improvement
>         Environment: All
>            Reporter: Dan Armbrust
>            Priority: Minor
>             Fix For: 1.5, 2.0
>
>         Attachments: TFTPClient.java.patch
>
>
> 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:
> http://en.wikipedia.org/wiki/Trivial_File_Transfer_Protocol
> 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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