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/*
 * Copyright 2015 The FireNio Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.firenio.component;

import java.net.SocketOption;
import java.net.StandardSocketOptions;

/**
 * @author wangkai
 */
public final class SocketOptions {

    public static final int      RAW_IP_PROTO_TCP   = 6;
    public static final int      RAW_SOL_SOCKET     = 1;
    public static final int      SOL_SOCKET;
    public static final int      SO_BROADCAST;
    public static final int      SO_ERROR;
    public static final int      SO_KEEPALIVE;
    public static final int      SO_SNDBUF;
    public static final int      SO_RCVBUF;
    public static final int      SO_REUSEADDR;
    public static final int      SO_LINGER;
    public static final int      TCP_NODELAY;
    public static final int      TCP_QUICKACK;
    static final        int      PARAM_BOOLEAN;
    static final        int      IP_PROTO_TCP;
    static final        Object[] TCP_SOCKET_OPTIONS = new Object[16];
    static final        Object[] SO_SOCKET_OPTIONS  = new Object[16];

    static {
        IP_PROTO_TCP = RAW_IP_PROTO_TCP << 16;
        SOL_SOCKET = RAW_SOL_SOCKET << 16;
        PARAM_BOOLEAN = 1 << 8;
        SO_ERROR = SOL_SOCKET | 4;
        SO_BROADCAST = SOL_SOCKET | PARAM_BOOLEAN | 6;
        SO_KEEPALIVE = SOL_SOCKET | PARAM_BOOLEAN | 9;
        SO_SNDBUF = SOL_SOCKET | 7;
        SO_RCVBUF = SOL_SOCKET | 8;
        SO_REUSEADDR = SOL_SOCKET | PARAM_BOOLEAN | 2;
        SO_LINGER = SOL_SOCKET | 13;
        TCP_NODELAY = IP_PROTO_TCP | PARAM_BOOLEAN | 1;
        TCP_QUICKACK = IP_PROTO_TCP | PARAM_BOOLEAN | 12;
        TCP_SOCKET_OPTIONS[TCP_NODELAY & 0xff] = StandardSocketOptions.TCP_NODELAY;
        SO_SOCKET_OPTIONS[SO_BROADCAST & 0xff] = StandardSocketOptions.SO_BROADCAST;
        SO_SOCKET_OPTIONS[SO_KEEPALIVE & 0xff] = StandardSocketOptions.SO_KEEPALIVE;
        SO_SOCKET_OPTIONS[SO_SNDBUF & 0xff] = StandardSocketOptions.SO_SNDBUF;
        SO_SOCKET_OPTIONS[SO_RCVBUF & 0xff] = StandardSocketOptions.SO_RCVBUF;
        SO_SOCKET_OPTIONS[SO_REUSEADDR & 0xff] = StandardSocketOptions.SO_REUSEADDR;
        SO_SOCKET_OPTIONS[SO_LINGER & 0xff] = StandardSocketOptions.SO_LINGER;
    }

    @SuppressWarnings("unchecked")
    public static SocketOption