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Doubts about the Winsock Kernel Buffer and Nagle algorithm

When reading this article, I had a doubt.

I realized that when transferring small data, the Nagle algorithm is turned on by default, which combines small packets. This causes some data to be cached before being transferred. I believe Winsock Kernel Buffer is where caching takes place. Correct me if I am wrong.

Does this mean that if the Winsock Kernel Buffer is set to zero with the SO_SNDBUF parameter, will the Nagle algorithm be disabled?

If not, where does WINSOCK cache small data?

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3 answers

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Setting SO_SNDBUF to zero will not implicitly disable nagle; The nagle state supported by WSK is independent of where the buffer is located. It is your responsibility to maintain the buffers that you publish until the transport consumes them.

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Source: https://habr.com/ru/post/1710833/

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