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//usr/include/sys/socket.h
typedef unsigned short sa_family_t;
//ͨÓÃsocketµØÖ·
struct sockaddr {
sa_family_t sa_family; /* address family, AF_xxx,ÐÒé´Ø*/
char sa_data[14]; /* 14 bytes of protocol address */
};
//usr/include/netinet/in.h
//INETµØÖ·´ØµÄsocketµØÖ·
struct in_addr {
__u32 s_addr;
};
struct sockaddr_in {
sa_family_t sin_family; /* Address family: AF_INET */
unsigned short int sin_port; /* Port number,¶Ë¿Ú*/
 
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