struct sockaddr_in6 { sa_family_t sin6_family; /* AF_INET6 */ in_port_t sin6_port; /* port number */ uint32_t sin6_flowinfo; /* IPv6 flow information */ struct in6_addr sin6_addr; /* IPv6 address */ uint32_t sin6_scope_id; /* Scope ID (new in 2.4) */ }; stru...
sockaddr_in(在netinet/in.h中定义): struct sockaddr_in { short int sin_family; /* Address family */ unsigned short int sin_port; /* Port number */ struct in_addr sin_addr; /* Internet address */ unsigned char sin_zero[8]; /* Same size as struct sockaddr */ }; struct in_addr ...
在linux环境下,结构体struct sockaddr_in在/usr/include/netinet/in.h中定义,具体如下: /* Structure describing an Internet socket address. */ struct sockaddr_in { __SOCKADDR_COMMON (sin_); in_port_t sin_port; /* Port number. */ struct in_addr sin_addr; /* Internet address. */ /* Pa...
struct sockaddr_in是已经声明了的结构名，这里当作类型名来使用，如基础类型名int，double等等，addr被声明为struct sockaddr_in类型的变量，就像int a;中的a一样。
在linux环境下,结构体struct sockaddr_in在/usr/include/netinet/in.h中定义,具体如下: /* Structure describing an Internet socket address. */ struct sockaddr_in { __SOCKADDR_COMMON (sin_); in_port_t sin_port; /* Port number. */
sockaddr_in(在netinet/in.h中定义): struct sockaddr_in { short int sin_family; /* Address family */ unsigned short int sin_port; /* Port number */ struct in_addr sin_addr; /* Internet address */ unsigned char sin_zero[8]; /* Same size as struct sockaddr */ ...
struct sockaddr 和 struct sockaddr_in 这两个结构体用来处理网络通信的地址。 //以下是 IPv4 的定义structsockaddr { unsignedshortsa_family;//2 bytes address family, AF_xxxcharsa_data[14];//14 bytes of protocol address};structsockaddr_in {shortsin_family;//2 bytes e.g. AF_INET, AF_INET6un...
在网络编程中经常用到struct sockaddr和struct sockaddr_in,这里简单介绍。 在linux环境下,结构体struct sockaddr在/usr/include/linux/socket.h中定义,具体如下: 1 2 3 4 typedefunsignedshortsa_family_t; structsockaddr { sa_family_t sa_family;/* address family, AF_xxx */ ...
struct sockaddr与struct sockaddr_in struct sockaddr { unsigned short sa_family; /* address family, AF_xxx */ char sa_data[14]; /* 14 bytes of protocol address */ };sa_family是地址家族，一般都是“AF_xxx”的形式。好像通常大多用的是...
int get_nic_IP_Address()//获取各网卡IP地址、子网掩码 { struct ifreq ifreq; //声明一个struct ifreq结构体(这个结构体中有很多重要的参数,具体可以参照第二的补充) int sock; int i; int tmpint; read_dev(); //这个函数的功能是获得网卡名字(保存在下面提到的sys_nic_ip[][]数组中)并计算网卡总...