Sample Programs
Connectionless Mode
ex_prim);
printf(”got DL_ERROR_ACK\n”);
printf(” dl_error_primitive = 0x%02x\n”,
printf(” dl_errno = 0x%02x\n”,
printf(” dl_unix_errno = %d\n”,
exit(1);
} else {
/*
didn't get an ERROR_ACK either; print whatever primitive we did get
*/
printf(”error: expected primitive 0x%02x, ”, ex_prim);
printf(”got primitive 0x%02x\n”,
exit(1);
}
} else {
/* no control; did we get data? */ if(data_buf.len) {
/* tell user we only got data */
printf(”error: check_ctrl found only data\n”); exit(1);
}else {
/*
no message???; well, it was probably an interrupted system call
*/
printf(”error: check_ctrl found no message\n”); exit(1);
}
}
}
}
/************************************************************************** put a message consisting of only a data part on a stream
**************************************************************************/
void |
|
|
put_data(fd, length) |
| |
int | fd; | /* file descriptor */ |
int | length; | /* length of data message */ |
158 | Appendix A |