sockaddr_in与sockaddr区别

先粘代码

struct sockaddr

{

__SOCKADDR_COMMON (sa_); /* Common data: address family and length. */

char sa_data[14]; /* Address data. */

};

 

struct sockaddr_in

{

__SOCKADDR_COMMON (sin_);

in_port_t sin_port; /* Port number. */

struct in_addr sin_addr; /* Internet address. */

/* Pad to size of `struct sockaddr'. */

unsigned char sin_zero[sizeof (struct sockaddr) -__SOCKADDR_COMMON_SIZE -sizeof (in_port_t) -sizeof (struct in_addr)];

 

};

 

 

 其在内存占用上是一致的,区别在于sockaddr_in可以详细设置端口号和IP地址,相互之间可以进行强制类型转化