Allow reading RX buffer from CLOSED/WAIT_CLOSE TCP socket. Server could close TCP connection after replying, but W5500 detects closing, and refuses to return RX buffer content (which is still valid)
Allow reading RX buffer from CLOSED/WAIT_CLOSE TCP socket.
Server could close TCP connection after replying,
but W5500 detects closing, and refuses to return RX buffer content (which is still valid)