Is there a way to limit QUIC sending rate?

[Cong Wang]

Hi,

Sorry if this looks like a newbie question. I'm trying to implement an application that utilizes QUIC to limit the maximum data sending rate. Is there a way to do this like for UDP?

Seems that QUIC has similar mechanisms with sender pacing mechanism.
https://chromium.googlesource.com/chromium/src/+/master/net/quic/core/congestion_control/pacing_sender.cc

Is there a flag or anything to limit the sending rate more directly?

Thanks,
Cong

[Ryan Hamilton]

I don't believe there is a flag, but you could implement your own limit in PacingSender::PacingRate.

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[Cong Wang]

Thank you very much for the reply! 

Would you mind telling a bit of details? 

For example, if I want to set the pacing rate to be 1Mbps, can I simply set the variable max_pacing_rate_ to 1000000 in file:

https://chromium.googlesource.com/chromium/src/+/master/net/quic/core/congestion_control/pacing_sender.h

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[Ian Swett]

Yes, setting max_pacing_rate_ in PacingSender will do exactly what you want.