[Twisted-Python] Question about PB and multicast

[Chaz.]

Thanks Eric. I was figuring it was something that I needed to write, but
I was hoping there was some hidden feature of Twisted or PB I didn't
know about.

Peace,
Chaz.

Eric Mangold wrote:
> On Wed, 17 May 2006 21:57:39 +1000, Chaz. <eprparadocs at gmail.com> wrote:
> 
>> I am building an application that has tens of thousands of clients.
>> There are times when I need to talk to quite a few of the clients
>> using PB.
>>
>> When I have to talk to a single (or a few) clients via PB I do the
>> normal thing - issue multiple calls. In the cases where I have to talk
>> to quite a few clients I had thought of changing the object I am sending
>> to include the names of the machines I am interested in talking to. I
>> would then send it via multicast using PB. I know this would require
>> some changes on the PB side, but I am wondering if anyone sees a problem
>> doing this?
>>
>> Peace,
>> Chaz.
> 
> PB connections were only ever designed to operate between two peers.
> It's designed to run over a reliable stream protocol, e.g. TCP.
> 
> TCP doesn't work over Multicast (it doesn't make any sense, if you think
> about it). If you want to use Multicast, I think you'll pretty much have
> to write your own thing using UDP.
> 
> -Eric
>