Problem with include openssl on Qt Andrioid

[Creatorczyk]

@KroMignon Because I want to use functions from lib to encode RSA.

I added:

INCLUDEPATH += /home/john/openssl_test/static/include/

The bug with headers has resolved, but although intelisense can see functions, the application still does not build

[KroMignon]

@Creatorczyk said in Problem with include openssl on Qt Andrioid:

The bug with headers has resolved, but although intelisense can see functions, the application still does not build

Because you also need to say that you are using the libs ;)
Add this in your PRO file:

LIBS += -llibcrypto -llibssl

[Creatorczyk]

@KroMignon It did not help :(

[KroMignon]

@Creatorczyk said in Problem with include openssl on Qt Andrioid:

It did not help :(

It seems that you have to specify the location of the libs to avoid error error: cannot find XXX
According to your posts, you are using Qt 5.15 for Android, so I would suggest to do it as follow:

CONFIG(release, debug|release): SSL_PATH = /home/john/openssl_test
else: SSL_PATH = /home/john/openssl_test/no-asm

contains(ANDROID_TARGET_ARCH, armeabi-v7a) : SSL_PATH = $$SSL_PATH/Qt-5.12.4_5.13.0/arm
contains(ANDROID_TARGET_ARCH, arm64-v8a) : SSL_PATH = $$SSL_PATH/Qt-5.12.4_5.13.0/arm64
contains(ANDROID_TARGET_ARCH, x86): SSL_PATH = $$SSL_PATH/Qt-5.12.4_5.13.0/x86
contains(ANDROID_TARGET_ARCH, x86_64) : SSL_PATH = $$SSL_PATH/Qt-5.12.4_5.13.0/x86_64

LIBS += -L$$SSL_PATH -llibcrypto
LIBS += -L$$SSL_PATH -llibssl

[jsulm]

@KroMignon said in Problem with include openssl on Qt Andrioid:

LIBS += -L$$SSL_PATH -llibcrypto
LIBS += -L$$SSL_PATH -llibssl

It should be

LIBS += -L$$SSL_PATH -lcrypto
LIBS += -L$$SSL_PATH -lssl

(without lib prefix).
@Creatorczyk

[KroMignon]

@jsulm said in Problem with include openssl on Qt Andrioid:

It should be
LIBS += -L$$SSL_PATH -lcrypto
LIBS += -L$$SSL_PATH -lssl

(without lib prefix).

Thanks :)

[Creatorczyk]

@KroMignon @jsulm I was able to build a project thanks to your tips, but I am having trouble running the application on my phone now. During "Run" the application crashes and issues the following message:

[KroMignon]

@Creatorczyk said in Problem with include openssl on Qt Andrioid:

was able to build a project thanks to your tips, but I am having trouble running the application on my phone now. During "Run" the application crashes and issues the following message:

This message means libcrypto.so is not included in you APK, which looks strange to me, because this should be done with include(c:/Android/android-sdk/android_openssl/openssl.pri).

As APK file is a ZIP archive, you could verify the openSSL libs are include.

You could also try to add them by adding following code in your PRO file:

ANDROID_EXTRA_LIBS += \
     $SSL_PATH/libcrypto.so \
     $SSL_PATH/libssl.so

[Creatorczyk]

@KroMignon said in Problem with include openssl on Qt Andrioid:

ANDROID_EXTRA_LIBS +=
$SSL_PATH/libcrypto.so
$SSL_PATH/libssl.so

I changed to

ANDROID_EXTRA_LIBS += \
     $$SSL_PATH/libcrypto.so \
     $$SSL_PATH/libssl.so

And it works. Thanks!!

[Creatorczyk]

@KroMignon Hi, unfortunately I still have a problem. I've changed repository locations and want to run the project. Building is successful, but again there was a problem running the application on the phone:

My pro file:

Application output:

It is the same error as before, despite the added:

The project in the old location works without any problems. It appeared while moving the repository to a different path. How could I fix it?

[KroMignon]

@Creatorczyk said in Problem with include openssl on Qt Andrioid:

The project in the old location works without any problems. It appeared while moving the repository to a different path. How could I fix it?

The error you have is clear, the library libcrypto.so is not part of your APK, and cannot be found at application start.
Are you sure SSL_PATH is what it should be?
you could add message(SSL_PATH is $$SSL_PATH) to show what you have configured.

[Creatorczyk]

@KroMignon I resolved problem by check checkboxes in Build Steps with archictures. Thanks

[8Observer8]

@KroMignon said in Problem with include openssl on Qt Andrioid:

for qmake

Thank you very much!

QT += core gui websockets widgets

android: include(C:/Qt/Tools/OpenSSL-1.1.1j/Win_x64/bin/openssl.pri)

CONFIG += c++17

SOURCES += \
    main.cpp

I have deployed a simple server example with Box2D-WASM in JavaScript on free Glitch hosting: https://glitch.com/edit/#!/merciful-regal-soursop from the GitHub repository: send-gravity-from-server-to-client-box2d-wasm-js This example sends the gravity value in JSON format when a client is connected. The following example is a client that works on Android, Desktop, and Web (with Qt WebAssembly). It is useful example to make multiplayer games with physics on the server side:

Output:

connected
"{\"action\":\"scGravity\",\"data\":\"{\\\"x\\\":0,\\\"y\\\":-3}\"}"

main.cpp

#include <QtNetwork/QNetworkRequest>
#include <QtWebSockets/QWebSocket>
#include <QtWidgets/QApplication>
#include <QtWidgets/QWidget>

class Widget : public QWidget
{
    Q_OBJECT

public:

    Widget()
    {
        setWindowTitle("Show gravity from server with Box2D-WASM");
        resize(420, 200);

        connect(&m_webSocket, &QWebSocket::connected,
            this, &Widget::onConnected);
        connect(&m_webSocket, &QWebSocket::textMessageReceived,
            this, &Widget::onMessageReceived);
        connect(&m_webSocket, &QWebSocket::errorOccurred,
            this, &Widget::onErrorOccurred);

        QUrl url("wss://merciful-regal-soursop.glitch.me");

        QNetworkRequest request;
        request.setUrl(url);
        request.setRawHeader(QByteArray("User-Agent"), QByteArray("Mozilla/5.0 "
            "(Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) "
            "Chrome/124.0.0.0 Safari/537.36"));

        m_webSocket.open(request);
    }
    ~Widget() {}

private slots:

    void onConnected()
    {
        qDebug() << "connected";
    }
    void onMessageReceived(const QString &message)
    {
        qDebug() << message;
    }

    void onErrorOccurred(QAbstractSocket::SocketError error)
    {
        qDebug() << "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!";
        qDebug() << "Error:" << error;
        qDebug() << "Device supports OpenSSL:" << QSslSocket::supportsSsl();
        qDebug() << "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!";
    }

private:

    QWebSocket m_webSocket;
};

#include "main.moc"

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    Widget w;
    w.show();
    return a.exec();
}