Yes, it's really wasteful to have unnecessary connect()/accept() calls, plus handshaking and buffer allocation, and TCP dynamic tuning, etc. And you're right,

Yes, it's really wasteful to have unnecessary connect()/accept() calls, plus handshaking and buffer allocation, and TCP dynamic tuning, etc. And you're right, thanks, TIME_WAIT full should just error on the Linux client. I was thinking of a different kernel which has bugs in this area, and ends up dropping SYNs...