[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 :)