4399游戏盒 v7.2.1.31版本的 MD5 值为：951717f45e3fda95c8a358caf4ca93e1

以下内容为反编译后的 NetworkCheckHandler.java 源代码，内容仅作参考

package com.framework.net;

import android.text.TextUtils;
import com.framework.manager.network.NetworkStatusManager;
import java.net.InetSocketAddress;
import java.net.Socket;

public class NetworkCheckHandler {

    public enum NetWorkKind {
        UnAvalible,
        NoNet,
        HasNet
    }

    public static NetWorkKind checkNetwork() {
        if (!NetworkStatusManager.getCurrentNetwork().networkAvalible()) {
            return NetWorkKind.UnAvalible;
        }
        return checkReachable("www.baidu.com");
    }

    public static NetWorkKind checkReachable(String str) {
        Socket socket;
        NetWorkKind netWorkKind = NetWorkKind.NoNet;
        if (TextUtils.isEmpty(str)) {
            throw new NullPointerException("host can't null");
        }
        Socket socket2 = null;
        try {
            try {
                try {
                    socket = new Socket();
                } catch (Exception e) {
                    e.printStackTrace();
                }
            } catch (Exception e2) {
                e = e2;
            }
        } catch (Throwable th) {
            th = th;
            socket = socket2;
        }
        try {
            socket.connect(new InetSocketAddress(str, 80), 4000);
            netWorkKind = NetWorkKind.HasNet;
            socket.close();
        } catch (Exception e3) {
            e = e3;
            socket2 = socket;
            e.printStackTrace();
            if (socket2 != null) {
                socket2.close();
            }
            return netWorkKind;
        } catch (Throwable th2) {
            th = th2;
            if (socket != null) {
                try {
                    socket.close();
                } catch (Exception e4) {
                    e4.printStackTrace();
                }
            }
            throw th;
        }
        return netWorkKind;
    }
}