Retrieves long byte quantities.
#include <sys/types.h> #include <netinet/in.h> #include <arpa/nameser.h> #include <resolv.h>
unsigned long _getlong (MessagePtr) u_char *MessagePtr;
The _getlong subroutine gets long quantities from the byte stream or arbitrary byte boundaries.
The _getlong subroutine is one of a set of subroutines that form the resolver, a set of functions that resolves domain names. Global information used by the resolver subroutines is kept in the _res data structure. The /usr/include/resolv.h file contains the _res structure definition.
| MessagePtr | Specifies a pointer into the byte stream. |
The _getlong subroutine returns an unsigned long (32-bit) value.
The _getlong subroutine is part of Base Operating System (BOS) Runtime.
All applications containing the _getlong subroutine must be compiled with _BSD set to a specific value. Acceptable values are 43 and 44. In addition, all socket applications must include the BSD libbsd.a library.
All applications containing the _getlong subroutine must be compiled with _BSD set to a specific value. Acceptable values are 43 and 44. In addition, all socket applications must include the BSD libbsd.a library.
| /etc/resolv.conf | |
| Lists name server and domain names. | |
The dn_comp subroutine, dn_expand subroutine, _getshort subroutine, putlong subroutine, putshort subroutine, res_init subroutine, res_mkquery subroutine, res_query subroutine, res_search subroutine, res_send subroutine.
Sockets Overview, and Understanding Domain Name Resolution in AIX Version 4.3 Communications Programming Concepts.