- A connect PtpOpen started counted as up as soon as getpeername
succeeded, which on Windows happens while it's still in progress, even
one about to be refused. It now needs the socket ready too, and a
pending connect's failure is read from SO_ERROR, the only place Windows
reports it (pspautotests net/adhoc/pair/basic).
- Out of the group, PdpRecv only dropped what its peek saw; on Windows a
peek can fail and leave the next datagram unchecked, so a vanished
client still got the host's data (pair/vanish).
pspautotests: pair/vanish times PTP's failure from when the peer left the
peer list.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
