Re: Losing UDP packets with MFC Sockets

Just two questions:

1.- The buffer size allows to store temporarly more than 1 packet? Or it is
related to the maximum packet size?

2.- About the thread: should I use threads for extracting data from input
buffer after OnReceive notification?

Thanks in advance

Vicent


"Scott McPhillips [MVP]" wrote:

> Vicent Soler wrote:
>
> > Hi all,
> >
> > We are developing a tool which uses UDP packets to receive data from a UDP
> > Server. The problem we have found is that some UDP packets are being lost
> > when the PC's CPU is near 100% and we think that this problem is related to
> > the Window's input buffer.
> >
> > Any suggestion to solve this problem!! Is there any way to change the input
> > buffer size of the socket and store the received packet while the PC is
> > processing other data? Should we use threads to extract data from sockets?
> >
> > We are really worried about this problem because we can not lose so much
> > packets as we do.
> >
> > Using more than one port, cuould solve the problem?
> >
> > Thanks in advance,
> >
> > Vicent
>
> I have seen the same problem with short packets (512 bytes) at high data
> rates. Two things improved it a lot. Use a thread for the socket with
> the thread priority set higher than normal. Turn off the Win XP "eye
> candy" in favor of the traditional Windows appearance.
>
> You can change the buffer size with SetSockOpt. I don't know if it will
> matter.
>
> --
> Scott McPhillips [VC++ MVP]
>
>
.

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