@section @code{getsockopt}
@findex getsockopt
-POSIX specification: @url{http://www.opengroup.org/susv3xsh/getsockopt.html}
+POSIX specification: @url{http://www.opengroup.org/onlinepubs/9699919799/functions/getsockopt.html}
-Gnulib module: ---
+Gnulib module: getsockopt
Portability problems fixed by Gnulib:
@itemize
+@item
+On Windows platforms (excluding Cygwin), error codes for
+@code{getsockopt} are not placed in @code{errno}, and
+@code{WSAGetLastError} must be used instead.
@end itemize
Portability problems not fixed by Gnulib:
@itemize
@item
This function is missing on some platforms:
-mingw, BeOS.
+BeOS.
@item
Some platforms don't have a @code{socklen_t} type; in this case this function's
fifth argument type is @samp{int *}.