Eelco Dolstra
9fc8d00d74
It appears that on current macOS versions, our use of poll() to detect client disconnects no longer works. As a workaround, poll() for POLLRDNORM, since this *will* wake up when the client has disconnected. The downside is that it also wakes up when input is available. So just sleep for a bit in that case. This means that on macOS, a client disconnect may take up to a second to be detected, but that's better than not being detected at all. Fixes #7584.
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