/*
* Copyright (c) 2020, Red Hat, Inc.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
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* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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package sun.net;
import java.net.SocketOption;
import java.util.Collections;
import java.util.HashSet;
import java.util.Set;
import static jdk.net.ExtendedSocketOptions.TCP_KEEPCOUNT;
import static jdk.net.ExtendedSocketOptions.TCP_KEEPIDLE;
import static jdk.net.ExtendedSocketOptions.TCP_KEEPINTERVAL;
public class ExtendedOptionsHelper {
private static final boolean keepAliveOptSupported =
ExtendedOptionsImpl.keepAliveOptionsSupported();
private static final Set<SocketOption<?>> extendedOptions = options();
private static Set<SocketOption<?>> options() {
Set<SocketOption<?>> options = new HashSet<>();
if (keepAliveOptSupported) {
options.add(TCP_KEEPCOUNT);
options.add(TCP_KEEPIDLE);
options.add(TCP_KEEPINTERVAL);
}
return Collections.unmodifiableSet(options);
}
public static Set<SocketOption<?>> keepAliveOptions() {
return extendedOptions;
}
}