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UDP prototype » History » Version 5

Greg Burri, 07/01/2009 12:50 PM

1 1 Greg Burri
h1. UDP prototype
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h2. Goals
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* Make a program which will listen for multicast message.
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* It must be work between sub-networks (vlan).
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* It should be also able to send. User can type a message and all other peers will print it when it is sent.
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* Test it with some computers.
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h2. Qt and UDP multicast
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There is no support to UDP multicast in QT4.5 according this bug issue : http://www.qtsoftware.com/developer/task-tracker/index_html?method=entry&id=57952.
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An alternative is to use a broadcast address with _QHostAddress::Broadcast_. It will only work with IPv4. 
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It's possible to use UDP multicast only with the low-level API. This solution is OS dependent and will not be accepted.
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For the moment the broadcast alternative will be used.
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h2. References
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* http://en.wikipedia.org/wiki/Multicast