_getshort()--Get Short Byte Quantities

 #include <sys/types.h>
 #include <netinet/in.h>
 #include <arpa/nameser.h>
 #include <resolv.h>

 unsigned short
          _getshort(unsigned char *message_pointer)

The _getshort() function is used to retrieve an unsigned short byte quantity.

Authorities and Locks

None.

Parameters

message_pointer

(Input) The pointer where the short integer is to be received from.

Return Value

_getshort() returns a 16-bit integer from where message_pointer is pointing.

Usage Notes

1. DNS packets have fields that are unsigned short integers (for example, type, class, and data length). _getshort() picks these unsigned short integers out of a DNS packet and returns them.

Related Information

• _getlong()--Get Long Byte Quantities
  
  
• _putlong()--Put Long Byte Quantities
  
  
• _putshort()--Put Short Byte Quantities