[U-Boot] [RFC] Act as a TFTP server

[Luca Ceresoli <luca.ceresoli@comelit.it>]

Il 30/04/2011 21:53, Wolfgang Denk ha scritto:
> Dear Luca Ceresoli,
>
> In message<4DA59B5E.5000105@comelit.it>  you wrote:
>>>>      Usage:    tftpsrv [<loadaddr>]
>>>>
>>>> This would be used almost like tftpboot, except no file name is specified on
>>>> the commandline.
>>>> <loadaddr>    would default to the environment variable.
>>> I see some user interface issues here:
>>> - When and how do you terminate this command?  After a successful
>>>     download, ok.  But how long do we wait for that?  Forever? Or do we
>>>     time out?
>> The TFTP client tries sending a RRQ packet TIMEOUT_COUNT times (default 10),
>> spaced TIMEOUT msecs (default 5000) from each other. 50 seconds total by default.
> Well - this requires that there actually _is_ a TFTP client which
> attempts to connect.  But there is no guarantee that any such client
> is running at all, or that it can connect through firewalls, routers,
> etc.
>
> So assuming we never see any incoming packets - how long will we wait?

Once it has started, the server is stopped like the client is:
- on a complete file reception
- pressing Ctrl-C
- after waiting 5 seconds for 10 times.

Luca