[ANDROID] Network request with the service that starts at boot time

[Montjet]

Hello,
I implemented simple android service that starts at boot time based on https://www.kdab.com/qt-android-create-android-service-using-qt/

Now, I have problem with network request - status code 0 - only with service that starts at boot time :(
Simple code of server:

#include <QAndroidService>
#include "rep_pingpong_source.h"

#include <QObject>
#include <QString>
#include <QNetworkAccessManager>
#include <QNetworkReply>
#include <QNetworkRequest>

QString statusCode = "-";

class PingPong : public PingPongSource {
public slots:
    // PingPongSource interface
    void ping(const QString &msg) override {
        emit pong("Status code: " + statusCode);
    }
};

int main(int argc, char *argv[])
{
    QAndroidService app(argc, argv);

    QRemoteObjectHost srcNode(QUrl(QStringLiteral("local:replica")));
    PingPong pingPongServer;
    srcNode.enableRemoting(&pingPongServer);

    auto networkManager = new QNetworkAccessManager();
    QObject::connect(networkManager, &QNetworkAccessManager::finished,
            [](QNetworkReply* reply){ statusCode = QString::number(reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt()); });

    QByteArray rawDataToSend = "{}";
    QByteArray postDataSize = QByteArray::number(rawDataToSend.size());
    QNetworkRequest networkRequest(QUrl("http://example.com/"));

    // Header
    networkRequest.setRawHeader("User-Agent", "test");
    networkRequest.setRawHeader("X-Custom-User-Agent", "test");
    networkRequest.setRawHeader("Content-Type", "application/json");
    networkRequest.setRawHeader("Content-Length", postDataSize);

    networkManager->post(networkRequest, rawDataToSend);

    return app.exec();
}

AndroidManifest.xml:

<?xml version="1.0"?>
<manifest package="com.kdab.training" xmlns:android="http://schemas.android.com/apk/res/android" android:versionName="1.0" android:versionCode="1" android:installLocation="auto">
    <application android:hardwareAccelerated="true" android:name="org.qtproject.qt5.android.bindings.QtApplication" android:label="-- %%INSERT_APP_NAME%% --">
        <activity android:configChanges="orientation|uiMode|screenLayout|screenSize|smallestScreenSize|layoutDirection|locale|fontScale|keyboard|keyboardHidden|navigation" android:name="org.qtproject.qt5.android.bindings.QtActivity" android:label="-- %%INSERT_APP_NAME%% --" android:screenOrientation="unspecified" android:launchMode="singleTop">
            <intent-filter>
                <action android:name="android.intent.action.MAIN"/>
                <category android:name="android.intent.category.LAUNCHER"/>
            </intent-filter>

            <!-- Application arguments -->
            <!-- meta-data android:name="android.app.arguments" android:value="arg1 arg2 arg3"/ -->
            <!-- Application arguments -->

            <meta-data android:name="android.app.lib_name" android:value="client"/>
            <meta-data android:name="android.app.qt_sources_resource_id" android:resource="@array/qt_sources"/>
            <meta-data android:name="android.app.repository" android:value="default"/>
            <meta-data android:name="android.app.qt_libs_resource_id" android:resource="@array/qt_libs"/>
            <meta-data android:name="android.app.bundled_libs_resource_id" android:resource="@array/bundled_libs"/>
            <!-- Deploy Qt libs as part of package -->
            <meta-data android:name="android.app.bundle_local_qt_libs" android:value="-- %%BUNDLE_LOCAL_QT_LIBS%% --"/>
            <meta-data android:name="android.app.bundled_in_lib_resource_id" android:resource="@array/bundled_in_lib"/>
            <meta-data android:name="android.app.bundled_in_assets_resource_id" android:resource="@array/bundled_in_assets"/>
            <!-- Run with local libs -->
            <meta-data android:name="android.app.use_local_qt_libs" android:value="-- %%USE_LOCAL_QT_LIBS%% --"/>
            <meta-data android:name="android.app.libs_prefix" android:value="/data/local/tmp/qt/"/>
            <meta-data android:name="android.app.load_local_libs" android:value="-- %%INSERT_LOCAL_LIBS%% --"/>
            <meta-data android:name="android.app.load_local_jars" android:value="-- %%INSERT_LOCAL_JARS%% --"/>
            <meta-data android:name="android.app.static_init_classes" android:value="-- %%INSERT_INIT_CLASSES%% --"/>
            <!--  Messages maps -->
            <meta-data android:value="@string/ministro_not_found_msg" android:name="android.app.ministro_not_found_msg"/>
            <meta-data android:value="@string/ministro_needed_msg" android:name="android.app.ministro_needed_msg"/>
            <meta-data android:value="@string/fatal_error_msg" android:name="android.app.fatal_error_msg"/>
            <!--  Messages maps -->

            <!-- Splash screen -->
            <!-- meta-data android:name="android.app.splash_screen_drawable" android:resource="@drawable/logo"/ -->
            <!-- meta-data android:name="android.app.splash_screen_sticky" android:value="true"/ -->
            <!-- Splash screen -->

            <!-- Background running -->
            <!-- Warning: changing this value to true may cause unexpected crashes if the
                          application still try to draw after
                          "applicationStateChanged(Qt::ApplicationSuspended)"
                          signal is sent! -->
            <meta-data android:name="android.app.background_running" android:value="false"/>
            <!-- Background running -->

            <!-- auto screen scale factor -->
            <meta-data android:name="android.app.auto_screen_scale_factor" android:value="false"/>
            <!-- auto screen scale factor -->

            <!-- extract android style -->
            <!-- available android:values :
                * full - useful QWidget & Quick Controls 1 apps
                * minimal - useful for Quick Controls 2 apps, it is much faster than "full"
                * none - useful for apps that don't use any of the above Qt modules
                -->
            <meta-data android:name="android.app.extract_android_style" android:value="full"/>
            <!-- extract android style -->
    </activity>

    <receiver android:name="com.kdab.training.MyActivity">
        <intent-filter>
            <action android:name="android.intent.action.BOOT_COMPLETED" />
        </intent-filter>
    </receiver>

    <service android:process=":qt" android:name="com.kdab.training.MyService">
    <!-- android:process=":qt" is needed to force the service to run on a separate process than the Activity -->

        <!-- Application arguments -->
        <meta-data android:name="android.app.arguments" android:value="-service"/>
        <!-- Application arguments -->

        <!-- If you are using the same application (.so file) for activity and also for service, then you
             need to use *android.app.arguments* to pass some arguments to your service in order to know which
             one is which
        -->

        <!-- Ministro -->
        <meta-data android:name="android.app.lib_name" android:value="server"/>
        <meta-data android:name="android.app.qt_sources_resource_id" android:resource="@array/qt_sources"/>
        <meta-data android:name="android.app.repository" android:value="default"/>
        <meta-data android:name="android.app.qt_libs_resource_id" android:resource="@array/qt_libs"/>
        <meta-data android:name="android.app.bundled_libs_resource_id" android:resource="@array/bundled_libs"/>
        <!-- Ministro -->

        <!-- Deploy Qt libs as part of package -->
        <meta-data android:name="android.app.bundle_local_qt_libs" android:value="-- %%BUNDLE_LOCAL_QT_LIBS%% --"/>
        <meta-data android:name="android.app.bundled_in_lib_resource_id" android:resource="@array/bundled_in_lib"/>
        <meta-data android:name="android.app.bundled_in_assets_resource_id" android:resource="@array/bundled_in_assets"/>
        <!-- Deploy Qt libs as part of package -->

        <!-- Run with local libs -->
        <meta-data android:name="android.app.use_local_qt_libs" android:value="-- %%USE_LOCAL_QT_LIBS%% --"/>
        <meta-data android:name="android.app.libs_prefix" android:value="/data/local/tmp/qt/"/>
        <meta-data android:name="android.app.load_local_libs" android:value="-- %%INSERT_LOCAL_LIBS%% --"/>
        <meta-data android:name="android.app.load_local_jars" android:value="-- %%INSERT_LOCAL_JARS%% --"/>
        <meta-data android:name="android.app.static_init_classes" android:value="-- %%INSERT_INIT_CLASSES%% --"/>
        <!-- Run with local libs -->

        <!--  Messages maps -->
        <meta-data android:value="@string/ministro_not_found_msg" android:name="android.app.ministro_not_found_msg"/>
        <meta-data android:value="@string/ministro_needed_msg" android:name="android.app.ministro_needed_msg"/>
        <meta-data android:value="@string/fatal_error_msg" android:name="android.app.fatal_error_msg"/>
        <!--  Messages maps -->


        <!-- Background running -->
        <meta-data android:name="android.app.background_running" android:value="true"/>
        <!-- Background running -->
    </service>

    </application>

    <uses-permission android:name="android.permission.SEND_SMS"/>
    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>
    <uses-sdk android:minSdkVersion="16" android:targetSdkVersion="16"/>
    <supports-screens android:largeScreens="true" android:normalScreens="true" android:anyDensity="true" android:smallScreens="true"/>

    <!-- The following comment will be replaced upon deployment with default permissions based on the dependencies of the application.
         Remove the comment if you do not require these default permissions. -->
    <!-- %%INSERT_PERMISSIONS -->

    <!-- The following comment will be replaced upon deployment with default features based on the dependencies of the application.
         Remove the comment if you do not require these default features. -->
    <!-- %%INSERT_FEATURES -->

</manifest>

server.pro:

TEMPLATE = lib
TARGET = server
CONFIG += dll
QT += core
QT += remoteobjects
QT += androidextras
QT += network

SOURCES += \
    server.cpp

REPC_SOURCE += pingpong.rep

Package of project to download:
https://1drv.ms/u/s!AufN-y--ppMkvD5NG3bf4HQlExqn

p.s.
After install app You have to restart system (service starts only at boot time)!

Qt: 5.11.2
Android 5.1 Lollipop
SDK:26.1.1
NDK: 16.1

#edit
I also added
<uses-permission android:name="android.permission.INTERNET"/>
after: <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>

and no changes.

[mvuori]

Generally, I wouldn't be surprised of such failure immediately after booting, when some subsystems may still be doing their thing. So, I would put a timer and wait for a while, and do a couple of retries.

[Montjet]

After 15 minutes I still have error :/

[raven-worx]

@Montjet
you can use QNetworkConfigurationManager::isOnline() before submitting the request.
On Android true is returned either when you are connected to a WiFi or cellular network.

[Montjet]

@raven-worx said in [ANDROID] Network request with the service that starts at boot time:

QNetworkConfigurationManager::isOnline()

QNetworkConfigurationManager::isOnline() and it's signal returns false all the time.

[raven-worx]

@Montjet said in [ANDROID] Network request with the service that starts at boot time:

QNetworkConfigurationManager::isOnline() and it's signal returns false all the time.

it doesn't on my side.
Are you sure you are not missing the network permissions?

[Montjet]

Ye, different device and it works properly ;(
But question is why it doesn't work on my device - Xiaomi redmi note 3.
It seems that all privileges are granted.

[raven-worx]

@Montjet
what does logcat say?

[Montjet]

It works properly... now.

[raven-worx]

@Montjet
what was the issue?
Maybe it helps others in the future.

[mimi220]

This post is deleted!

[Montjet]

I changed battery saver mode to no restrictions :)