Unix网络编程一

IPv4套接字地址结构

sockaddr_in: socket address internet

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 sin_zero[8];
};