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Somehow similar to a problem I discovered in a self made RADIUS proxy, I forgot to call flush(), and then it sometimes took another half second until the connection has been released. And this was on a performance critical system. The problem was not so obvious because the system appeared to work normal, only the bad delays were an indicator.
i'm writing a custom web server for a project (esp32 based)
each 4 connections system crashes (cannot bind socket anymore)
i was so angry with espressif thinking that was their fault (bad implementation of posix sockets)
but is mine...
today i did another code review and I just discovered that i missed a fucking close() in the websockets handler
fuck
fuck
i wasted a month on this issue.
rant
wasted time
espressif
my bad