Yes it's truly one way, and when errors really occur, we can't do
anything. However, to avoid errors, programs generally insert a large
amount of FEC plus, they would also re-transmit all files blindly
multiple times, then cross your fingers and do the no packet loss
dance.

I believe I'm on to something with this: http://mad.cs.tut.fi/

Thanks a lot

On Tue, Aug 5, 2008 at 8:31 AM, John Summerfield
<[EMAIL PROTECTED]> wrote:
> Ahmed Kamal wrote:
>>
>> Hi everyone,
>> I am facing a problem that I need to transfer some files (server to
>> client) over a one-way only communications channel (satellite download
>> only connection). Does anyone know of any ready made application (or
>> script) to help with that ? I guess the server would need to generate
>> and push forward error correction FEC data along with the files (since
>> there's no NACKs).
>>
>> Any previous experience or thoughts is highly appreciated
>
> I've never heard of a truly one-way connexion. Place I work used to have
>  satellite, but it used a phone line to complete the circuit. From that
> location's perspective, incoming traffic came out of the sky, and responses
> (and outbound stuff) all went out the phone line.
>
> Apart from its highly asymmetric chracteristics (and delays as triffic goes
> to the satellite and back), it was an internet connexion like any other, and
> all the usual protocols work just fine.
>
> If there really is no feedback, then when errors occur, how can you overcome
> them?
>
> --
>
> Cheers
> John
>
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