I'm trying to avoid TIME_WAIT in a client. I connect and then set O_NONBLOCK and SO_REUSEADDR. I call read until it returns 0. When read returns 0, the errno is also 0. I interpreted this as a sign that the server closed the connection. However, if I call close, the socket is set to TIME_WAIT, as confirmed by netstat.

Since I make a number of connections to the same host / port, I eventually start seeing "Address in use" errors (see http://hea-www.harvard.edu/~fine/Tech/addrinuse.html).

Should I be calling close after read returns 0? If I don't will the file descriptor be released?

c macos network-programming
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