/** resolves a single host specification */
private InetAddress[] resolveInternal(String host) throws IOException {
if ((host.startsWith("#") && host.endsWith("#"))
|| (host.startsWith("_") && host.endsWith("_"))) {
host = host.substring(1, host.length() - 1);
// allow custom resolvers to have special names
for (CustomNameResolver customNameResolver : customNameResolvers) {
InetAddress addresses[] = customNameResolver.resolveIfPossible(host);
if (addresses != null) {
return addresses;
}
}
switch (host) {
case "local":
return NetworkUtils.getLoopbackAddresses();
case "local:ipv4":
return NetworkUtils.filterIPV4(NetworkUtils.getLoopbackAddresses());
case "local:ipv6":
return NetworkUtils.filterIPV6(NetworkUtils.getLoopbackAddresses());
case "site":
return NetworkUtils.getSiteLocalAddresses();
case "site:ipv4":
return NetworkUtils.filterIPV4(NetworkUtils.getSiteLocalAddresses());
case "site:ipv6":
return NetworkUtils.filterIPV6(NetworkUtils.getSiteLocalAddresses());
case "global":
return NetworkUtils.getGlobalAddresses();
case "global:ipv4":
return NetworkUtils.filterIPV4(NetworkUtils.getGlobalAddresses());
case "global:ipv6":
return NetworkUtils.filterIPV6(NetworkUtils.getGlobalAddresses());
default:
/* an interface specification */
if (host.endsWith(":ipv4")) {
host = host.substring(0, host.length() - 5);
return NetworkUtils.filterIPV4(NetworkUtils.getAddressesForInterface(host));
} else if (host.endsWith(":ipv6")) {
host = host.substring(0, host.length() - 5);
return NetworkUtils.filterIPV6(NetworkUtils.getAddressesForInterface(host));
} else {
return NetworkUtils.getAddressesForInterface(host);
}
}
}
return InetAddress.getAllByName(host);
}
