Re: Multipeer Networking for groups > 8?
Re: Multipeer Networking for groups > 8?
- Subject: Re: Multipeer Networking for groups > 8?
- From: Gordon Apple <email@hidden>
- Date: Tue, 11 Jul 2017 10:10:12 -0500
- Thread-topic: Multipeer Networking for groups > 8?
IMHO, one of the worst failings of WiFi is not including a UDP broadcast
mode. This is sorely needed in many situations, such as viewing the
Instructor¹s screen (or a presentation screen) in a classroom. How about a
large lecture hall? A concert? A football stadium? WiFi is strictly a
point-to-point connection. It needs point-to-multipoint capability.
--
Gordon Apple
Ed4U
Little Rock, AR
On 7/10/17 1:19 PM, "Jens Alfke" <email@hidden> wrote:
>
>> On Jul 10, 2017, at 9:09 AM, David Hoerl <email@hidden> wrote:
>>
>> Can anyone suggest some open source project that supports say up to 25?
>
> I¹m interested in this too, so if you get any offline replies or find
> something on your own, please report back here!
>
>> I did find https://github.com/jdiehl/async-network, but it appears its a
>> datagram service only. Still, it might be made to work with a roll-your-own
>> end to end protocol.
>
> Doing reliable messaging over UDP is tricky, but it can be done. There are a
> number of protocols/libraries that provide that now, including WebRTC.
>
> I¹m guessing that AsyncNetwork broadcasts by sending to a UDP multicast
> address. Now, back in the olden days (~2002-2004) Stuart Cheshire cautioned me
> that sending too many multicast packets over WiFi would cripple network
> performance, because the base station drops down to a very low-bandwidth mode
> to ensure all the clients receive the packet. So it was actually faster to
> send a separate unicast packet to each subscriber. I have no idea whether this
> is still true.
>
> Jens
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