Please change this:
if(WSAAddressToString(lp,size2, NULL,op,&size) != 0) {
printf("This thing has failed \n");
return 1;
} else
printf("Address string = %s\n", op);
pAddresses = pAddresses->Next;
}
To this:
long errorcode = WSAAddressToString(lp,size2, NULL,op,&size);
if(errorcode != 0) {
printf("The error is number: %i\n", errorcode);
return 1;
} else
printf("Address string = %s\n", op);
pAddresses = pAddresses->Next;
}
Then tell us what number it printed.
Or look it up in http://msdn.microsoft.com/en-us/library/windows/desktop/ms681381%28v=vs.85%29.aspx
EDIT:
SOCKADDR_IN6 addrTemp;
addrTemp.sin6_family = AF_INET6;
long errorcode = WSAAddressToString(&addrTemp,size2, NULL,op,&size);
if(errorcode != 0) {
//printf("The error is number: %i\n", errorcode);
printf("errordetail: %i\n", WSAGetLastError());
return 1;
} else
printf("Address string = %s\n", op);
pAddresses = pAddresses->Next;
}