there are many analyses on the Internet about the emergence of a large number of close_wait on the server, which may be caused by the fact that the httpclient is not closed, but this kind of blog post usually only says four waves, and then takes it for granted that the failure of the client to close will lead to the server close_wait, and will not analyze the principle of this case, but I will not come to this conclusion when I analyze the process of waving four times. I don"t know if there is a great god who can help me solve my doubts