Hi, I'm looking at the endpoint code a lot in preparation for ports to 8.5.
I noticed the write(Non)BlockingDirect methods in particular as they had a fixme which wondered about the buffering strategy. Given the use, the thinking seems very legacy optimization oriented, because: - If the socket buffer is configured as direct, then it is a good idea to always use it - The async API is a better API for "direct" writes (where the caller owns the buffer that is ultimately written to the socket or the SSL engine) with a clearer contract - HTTP/2 and websocket don't use them anymore by default, and sendfile also bypasses them I have not made a performance study but it's fairly certain the benefit is zero. As a result, I'm considering removing them (quick experiment: no particular problem with the testsuite). Rémy