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TCP code copy using boost

I am trying to implement tcp zero copy using boost, but I cannot find anything in google. My question is: is it possible to make a null copy using boost libraries, and if so, please send me an example or link.

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You can watch this discussion of BoostCon by Yandex guys: Boost.Asio network server optimization

The gut feeling says they (the guys from Yandex) overestimated this (quite a bit ...). I would say that the main solution would be to use pre-allocated fixed buffers (possibly for threads) and use Asio's MutableBufferSequence concept to glue them together.

This approach is known as Scatter-Gather and is briefly described in Asio docs. An example can be given here: http://www.boost.org/doc/libs/1_56_0/doc/html/boost_asio/examples/cpp11_examples.html#boost_asio.examples.cpp11_examples.buffers

As @Nim already noted, Asio works by default in the “zero copy” mode (since it never owns a buffer and does not allocate on behalf of the caller). Therefore, in fact, it should be quite simple to make it work. Of course, regardless of whether kernel / libc functions are implemented in the zero copy, it depends only on the OS / platform.

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Source: https://habr.com/ru/post/1201545/

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