使用的是raknet中获取网卡的方式，支持linux，ios，安卓系统。未支持win。
#if defined(ANDROID)
@H_502_5@void UdpSocket::getHostIpByString( @H_502_5@ char ipList[ MAXIMUM_NUMBER_OF_INTERNAL_IDS ][ 16 ],@H_502_5@unsigned @H_502_5@int binaryAddresses[MAXIMUM_NUMBER_OF_INTERNAL_IDS] )
{
@H_502_5@struct ifreq ifreqs[MAXIMUM_NUMBER_OF_INTERNAL_IDS];
@H_502_5@struct ifconf ifconf;
@H_502_5@struct in_addr bin_addr;
memset(&ifconf,0,@H_502_5@sizeof(ifconf));
ifconf.ifc_buf = (@H_502_5@char*) (ifreqs);
ifconf.ifc_len = @H_502_5@sizeof(ifreqs);
{ // get list of interfaces
@H_502_5@int sock = socket(AF_INET,SOCK_STREAM,0);
@H_502_5@if (sock < 0)
{
perror("Error creating socket");
@H_502_5@return;
}
@H_502_5@if ((ioctl(sock,SIOCGIFCONF,(@H_502_5@char*) &ifconf )) < 0 )
{
perror("Error returned from ioctl(SIOGIFCONF)");
ifconf.ifc_len = 0;
}
close(sock);
}
@H_502_5@int idx = 0;
@H_502_5@int iface_count = ifconf.ifc_len/@H_502_5@sizeof(@H_502_5@struct ifreq);
printf("Interfaces (%d):\n",iface_count);
@H_502_5@for( ; idx < iface_count; idx++)
{
@H_502_5@char ip_addr[ 16/*INET_ADDRSTRLEN */];
@H_502_5@struct sockaddr_in *b = (@H_502_5@struct sockaddr_in *) &(ifreqs[idx].ifr_addr);
@H_502_5@const @H_502_5@char* host = inet_ntop(AF_INET,& b->sin_addr,ip_addr,@H_502_5@sizeof ip_addr);
strcpy( ipList[idx],host );
@H_502_5@if (inet_aton(host,&bin_addr) == 0)
{
perror("inet_aton error");
@H_502_5@continue;
}
@H_502_5@else
{
binaryAddresses[idx] = bin_addr.s_addr;
}
printf("\t%-10s\t%s (%08x)\n",ifreqs[idx].ifr_name,ipList[idx],binaryAddresses[idx]);
}
@H_502_5@for ( ; idx < MAXIMUM_NUMBER_OF_INTERNAL_IDS; ++idx )
{
ipList[idx][0]=0;
}
}
#else
@H_502_5@void UdpSocket::getHostIpByString(@H_502_5@char ipList[ MAXIMUM_NUMBER_OF_INTERNAL_IDS ][ 16 ],@H_502_5@unsigned @H_502_5@int binaryAddresses[MAXIMUM_NUMBER_OF_INTERNAL_IDS])
{
@H_502_5@struct ifaddrs *ifaddr,*ifa;
@H_502_5@int family,s;
@H_502_5@char host[NI_MAXHOST];
@H_502_5@struct in_addr linux_in_addr;
@H_502_5@if (getifaddrs(&ifaddr) == -1) {
printf( "Error getting interface list\n");
}
@H_502_5@int idx = 0;
@H_502_5@for (ifa = ifaddr; ifa != @H_502_5@ NULL; ifa = ifa->ifa_next) {
@H_502_5@if (!ifa->ifa_addr) @H_502_5@continue;
family = ifa->ifa_addr->sa_family;
@H_502_5@if (family == AF_INET) {
s = getnameinfo(ifa->ifa_addr,@H_502_5@sizeof(@H_502_5@struct sockaddr_in),host,NI_MAXHOST,@H_502_5@NULL, 0,NI_NUMERICHOST);
@H_502_5@if (s != 0) {
printf ("getnameinfo() Failed: %s\n",gai_strerror(s));
}
printf ("IP address: %s\n",host);
@H_502_5@if (strcmp(host,"127.0.0.1")!=0)
{
strcpy( ipList[ idx ],host );
@H_502_5@if (inet_aton(host,&linux_in_addr) == 0) {
perror("inet_aton");
}
@H_502_5@else {
binaryAddresses[idx]=linux_in_addr.s_addr;
}
idx++;
}
}
}
@H_502_5@for ( ; idx < MAXIMUM_NUMBER_OF_INTERNAL_IDS; ++idx )
{
ipList[idx][0]=0;
}
freeifaddrs(ifaddr);
}
#endif
原文链接：https://www.f2er.com/cocos2dx/344408.html