public DatagramChannelImpl(SelectorProvider sp, FileDescriptor fd) throws IOException {
super(sp);
this.family =
Net.isIPv6Available() ? StandardProtocolFamily.INET6 : StandardProtocolFamily.INET;
this.fd = fd;
this.fdVal = IOUtil.fdVal(fd);
this.state = ST_UNCONNECTED;
this.localAddress = Net.localAddress(fd);
}
public DatagramChannelImpl(SelectorProvider sp) throws IOException {
super(sp);
ResourceManager.beforeUdpCreate();
try {
this.family =
Net.isIPv6Available() ? StandardProtocolFamily.INET6 : StandardProtocolFamily.INET;
this.fd = Net.socket(family, false);
this.fdVal = IOUtil.fdVal(fd);
this.state = ST_UNCONNECTED;
} catch (IOException ioe) {
ResourceManager.afterUdpClose();
throw ioe;
}
}
public DatagramChannelImpl(SelectorProvider sp, ProtocolFamily family) throws IOException {
super(sp);
if ((family != StandardProtocolFamily.INET) && (family != StandardProtocolFamily.INET6)) {
if (family == null) throw new NullPointerException("'family' is null");
else throw new UnsupportedOperationException("Protocol family not supported");
}
if (family == StandardProtocolFamily.INET6) {
if (!Net.isIPv6Available()) {
throw new UnsupportedOperationException("IPv6 not available");
}
}
this.family = family;
this.fd = Net.socket(family, false);
this.fdVal = IOUtil.fdVal(fd);
this.state = ST_UNCONNECTED;
}