网络编程3

IPv4套接字结构体地址代码

include <stdint.h>
include <netinet/in.h>
include <sys/socket.h>

struct in_addr {
in_addr_t s_addr;
};

struct sockaddr_in {
uint8_t sin_len;
sa_family_t sin_family;
in_port_t sin_port;
struct in_addr sin_addr;
char size_zero[8];
};