I think the following code does polling : >> [ result := socket receiveUDPDataInto: buffer. >> result first > 0 ] whileFalse: [ (Delay forMilliseconds: 10) wait ].
and it is preferable to use semaphores, which are more efficient. Is it possible to replace it by : socket waitForData. result :- socket receiveUDPDataInto: buffer ??? Annick PS : I have successfully used broadcast UDP on Raspberry Le 21 oct. 2014 à 16:08, Henrik Johansen <henrik.s.johan...@veloxit.no> a écrit : > >> On 21 Oct 2014, at 3:52 , Luc Fabresse <luc.fabre...@gmail.com> wrote: >> >> >> >> 2014-10-21 15:40 GMT+02:00 Sven Van Caekenberghe <s...@stfx.eu>: >> >> > On 21 Oct 2014, at 15:29, Luc Fabresse <luc.fabre...@gmail.com> wrote: >> > >> > >> > yes examples are good. >> > but I also suggest to use a stream on a UDPSocket instead of manipulating >> > the socket directly in the model code. >> > Usually, it lowers the code complexity. >> >> Hmm, are you sure that is even possible with UDP sockets ? >> >> I was thinking of using a stream on the data part of the datagram packets. >> If you have structured data it simpler to use #next or #nextImage, ... >> >> And if the data part is bigger than one datagram packet (65535 IIRC), you >> can append to the stream as soon as you receive the next packet. >> >> Does it sounds good? >> >> Cheers, >> >> Luc > > UDP delivery isn't ordered, nor reliable. > Build those into a Stream wrapper in order to reliably reconstruct a data > stream from the sender, and you're almost back to TCP... > > Cheers, > Henry
