@node socket @section @code{socket} @findex socket POSIX specification:@* @url{https://pubs.opengroup.org/onlinepubs/9699919799/functions/socket.html} Gnulib module: socket Portability problems fixed by Gnulib: @itemize @item On Windows platforms (excluding Cygwin), the descriptors returned by the @code{socket} function cannot be used in calls to @code{read}, @code{write}, and @code{close}; you have to use @code{recv}, @code{send}, @code{closesocket} in these cases instead. @item On Windows platforms (excluding Cygwin), error codes from this function are not placed in @code{errno}, and @code{WSAGetLastError} must be used instead. @end itemize Portability problems not fixed by Gnulib: @itemize @end itemize