On Aug 28, 8:06 am, Francesco Bochicchio <[EMAIL PROTECTED]> wrote: > On 28 Ago, 08:09, inorlando <[EMAIL PROTECTED]> wrote: > > > > > Hi all, > > > I have a question about python and sockets , UDP datagram in > > particular. I'm new to socket programming so please bare with me. > > > I am trying to write a simple application that broadcast files to > > another computer on the same network/subnet but I do not want the > > receiver computer to have to respond, I only want it to receive the > > packet. > > > So this was simple enough, but my problem is this when I send a file > > that is say larger then 100K the receiver is not able to keep up with > > the packets as they arrive. I get say 60 or so then the rest are > > ignored. > > > I have tried a couple of different approaches like threading and > > queuing, but all ultimately have the same problem. > > > So my question is how can I receive a continuous stream of UDP packets > > to some kind of buffer for processing with out losing packets? > > > Thank you for any help or guidance that you provide. > > > - InOrlando > > The UDP protocol is defined 'unreliable' because it cannot guarantee > in all conditions > the delivery of all packets in the correct sequence. This means than > in specific conditions, e.g. > when the network or one of the communicating computers is overloaded, > you can loose packets or > receive them in the wrong order. > > So, first of all, if you cannon tolerate packet loss, consider > switching the protocol to TCP. > If you cannot change protocol (maybe because TCP has no multicast), > then try to reduce the load on the > computer and the network, e.g. by inserting a delay between two packet > transmissions. But remember that > this only reduce, does not cancel, the possibility of packet loss or > packet mis-ordering. > > Of course, it could be a bug in your program, in which case none of > the above matters ;) > > Ciao > ----- > FB
Anyone else have any comments? Anything? -- http://mail.python.org/mailman/listinfo/python-list
