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socket_strerror() takes as its
errno parameter a socket
error code as returned by
socket_last_error() and returns the corresponding
explanatory text. This makes it a bit more pleasant to figure
out why something didn't work; for instance, instead of
having to track down a system include file to find out what
'-111' means, you just pass it to
socket_strerror(), and it tells you what happened.
See also socket_accept(),
socket_bind(),
socket_connect(),
socket_listen(), and
socket_create().