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Any implementation with TCP Delayed ACK?

asked 2018-08-06 06:29:38 +0000

ramprasad1211 gravatar image


I find all default kernels of ubuntu/Windows - not using TCP delayed ACK. Is there any implementation - which uses TCP delayed ACK at all? Or is it just a concept without having any implementation?

If you know anything, could you share details?

Thanks, Ram

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answered 2018-08-06 08:44:27 +0000

Jasper gravatar image

I have seen delayed ACKs lots of times (from multiple stacks, including Windows and Linux), sometimes even in faulty ways when a push flag should have triggered an instant ACK. So I'm not sure how you come to the conclusion that it isn't used? Whenever a single data packet without PSH flag arrives, a 200ms ACK delay happens, waiting for more data to arrive. But maybe you have a different definition of "TCP delayed ACK"?

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Thanks & I see what you are saying Jasper. Let me do some more tests before I come back and ask you next question...

ramprasad1211 gravatar imageramprasad1211 ( 2018-08-06 11:05:17 +0000 )edit

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Asked: 2018-08-06 06:29:38 +0000

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Last updated: Aug 06 '18