WSAIoctl function to control the packets send speed of a UDP socket

Asked Apr 24 '19 at 07:33

Active Apr 24 '19 at 08:31

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Could I use the WSAIoctl() function provided by the Windows SDK to control the packets send speed of a UDP socket?

I need to control the packets sending speed of an UDP socket at the accuracy of 400KB/S. I am running program at Windows 7 System.

I have tried to use the Sleep() API provided by Windows SDK to control the number of UDP packets sended in a little time slice. But I have also found that when my program called Sleep(1), the thread in which the Sleep(1) function always slept more than 1 ms. So this solution cannot control the UDP packets' sending speed at the level of accuracy which I need.

My mentor has told me that I could try to use the WSAIoctl() API so as to set the SIO_SET_QOS option in order to solve this problem. But I cannot find enough information about SIO_SET_QOS.

edited Apr 24 '19 at 08:31

user207421

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asked Apr 24 '19 at 07:33

Erwin Smith

Sorry , English is not my native language. So Please forgive my if my description has some mistakes. – Erwin Smith Apr 24 '19 at 07:41
It's documented, but your 'mentor' isn't correct about this. You can't control the rate of sending from the UDP stack, and SIO_SET_QOS has nothing to do with that whatsoever: it's an instruction to the *routers*. – user207421 Apr 24 '19 at 08:32
So do you have some more information about the SIO_SET_QOS in detail? Thanks for your answer. – Erwin Smith Apr 24 '19 at 08:50
Yes, and I have already provided it: 'it is documented'. Have a look on MSDN where you found `WSAIoctl()`. – user207421 Apr 24 '19 at 08:56
Thanks again, I have found it. – Erwin Smith Apr 24 '19 at 09:01

WSAIoctl function to control the packets send speed of a UDP socket

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