SO_RCVBUF 103 maint/gnulib/tests/test-nonblocking-socket-main.c # ifdef SO_RCVBUF SO_RCVBUF 107 maint/gnulib/tests/test-nonblocking-socket-main.c if (getsockopt (server_socket, SOL_SOCKET, SO_RCVBUF, &value, &value_len) >= 0)