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ifaddrs结构体定义如下：struct ifaddrs { struct ifaddrs *ifa_next; /* Next item in list */ char *ifa_name; /* Name of interface */ unsigned int ifa_flags; /* ...

sockaddr结构在windows/linux下有下面结构：struct sockaddr{ unsigned short sa_family;/*addressfamily,AF_xxx*/ char sa_data[14];/*14bytesofprotocoladdress*/};sa_family是地址家族，一般都是“AF_xxx”的形式。通常大多用的是...