QtNetwork.java

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// Copyright (C) 2020 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
package org.qtproject.qt.android.network;
 
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.net.ConnectivityManager;
import android.net.Proxy;
import android.net.ProxyInfo;
 
class QtNetwork
{
    private static final String LOG_TAG = "QtNetwork";
    private static ProxyReceiver m_proxyReceiver = null;
    private static final Object m_lock = new Object();
    private static volatile ProxyInfo m_proxyInfo = null;
 
    private static class ProxyReceiver extends BroadcastReceiver
    {
        @Override
        public void onReceive(Context context, Intent intent)
        {
            m_proxyInfo = null;
        }
    }
 
    private QtNetwork() {}
 
    static void registerReceiver(final Context context)
    {
        synchronized (m_lock) {
            if (m_proxyReceiver == null) {
                m_proxyReceiver = new ProxyReceiver();
                IntentFilter intentFilter = new IntentFilter(Proxy.PROXY_CHANGE_ACTION);
                context.registerReceiver(m_proxyReceiver, intentFilter);
            }
        }
    }
 
    static void unregisterReceiver(final Context context)
    {
        synchronized (m_lock) {
            if (m_proxyReceiver == null)
                return;
 
            context.unregisterReceiver(m_proxyReceiver);
            // Statics outlive a Qt shutdown and would block re-registering.
            m_proxyReceiver = null;
            m_proxyInfo = null;
        }
    }
 
    static ConnectivityManager getConnectivityManager(final Context context)
    {
        return (ConnectivityManager)context.getSystemService(Context.CONNECTIVITY_SERVICE);
    }
 
    static ProxyInfo getProxyInfo(final Context context)
    {
        if (m_proxyInfo == null)
            m_proxyInfo = getConnectivityManager(context).getDefaultProxy();
        return m_proxyInfo;
    }
}