This structure is the IP address component of the SOCKADDR_IN structure. It is in big-endian network byte order.
At a Glance
| Header file: | Winsock.h | 
| Windows CE versions: | 1.0 and later | 
Syntax
typedef struct in_addr {
 union {
  struct{
  unsigned char s_b1,
   s_b2,
   s_b3,
   s_b4;
   } S_un_b;
  struct {
 unsigned short s_w1,
   s_w2;
   } S_un_w;
    unsigned long S_addr;
  } S_un;
} IN_ADDR;
See Also