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Re: broadcast address of a network interface
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Re: broadcast address of a network interface


  • Subject: Re: broadcast address of a network interface
  • From: Joel Reymont <email@hidden>
  • Date: Mon, 9 Feb 2009 20:39:57 +0000


On Feb 9, 2009, at 8:21 PM, Hostile Fork wrote:

http://en.wikipedia.org/wiki/IP_Multicast#Wireless_.28802.11.29_Considerations

With transmissions every 100-200-300ms, I think I'll skip multicast for now.


If (and it's a big if!) someone buys my app and tries it out, they are unlikely to go about adjusting beacon intervals. They will just delete the app and give me a bad rating.

Further, in this walkie-talkie scenario, why open N TCP connections and not send N UDP packet streams? I was under the impression that broadcast-type applications like this which could tolerate the occasional lost packet *should* be done with UDP.

This is the way I'm leaning, simply because it's much easier to track and use 2 streams (in/out) in the app that 2 streams per client. Intuitively, I perceive that it will be much faster too and much less work for the device.


On the other hand, this may just be premature optimization. Why not use TCP if it works? Then again, Bonjour does not leave the LAN and there shouldn't be much packet loss on a LAN with UDP.

It sounds like two implementations will be required and results will need to be published! Blog below.

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References: 
 >broadcast address of a network interface (From: Joel Reymont <email@hidden>)
 >Re: broadcast address of a network interface (From: Jens Alfke <email@hidden>)
 >Re: broadcast address of a network interface (From: Joel Reymont <email@hidden>)
 >Re: broadcast address of a network interface (From: Jens Alfke <email@hidden>)
 >Re: broadcast address of a network interface (From: Joel Reymont <email@hidden>)

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