QSslSocket cannot resolve and Permission Denied error

[Kosta]

The error messages are the following:

qt.network.ssl: QSslSocket: cannot resolve TLSv1_1_client_method

qt.network.ssl: QSslSocket: cannot resolve TLSv1_2_client_method

qt.network.ssl: QSslSocket: cannot resolve TLSv1_1_server_method

qt.network.ssl: QSslSocket: cannot resolve TLSv1_2_server_method

qt.network.ssl: QSslSocket: cannot resolve SSL_select_next_proto

qt.network.ssl: QSslSocket: cannot resolve SSL_CTX_set_next_proto_select_cb

qt.network.ssl: QSslSocket: cannot resolve SSL_get0_next_proto_negotiated

qt.network.ssl: QSslSocket: cannot resolve SSL_set_alpn_protos

qt.network.ssl: QSslSocket: cannot resolve SSL_CTX_set_alpn_select_cb

qt.network.ssl: QSslSocket: cannot resolve SSL_get0_alpn_selected

I run a Windows 7 machine, with openssl 1.1.0 installed on my D: drive. And I am using Qt5.9.0

My .pro file

QT += core network
QT -= gui

CONFIG += c++11 console
CONFIG -= app_bundle

# The following define makes your compiler emit warnings if you use
# any feature of Qt which as been marked deprecated (the exact warnings
# depend on your compiler). Please consult the documentation of the
# deprecated API in order to know how to port your code away from it.
DEFINES += QT_DEPRECATED_WARNINGS

# You can also make your code fail to compile if you use deprecated APIs.
# In order to do so, uncomment the following line.
# You can also select to disable deprecated APIs only up to a certain version of Qt.
#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0

SOURCES += main.cpp \
    server.cpp \
    commands.cpp \
    packet.cpp

HEADERS += \
    server.h \
    commands.h \
    packet.h

INCLUDEPATH += D:\OpenSSL-Win32\include\openssl
INCLUDEPATH += D:\OpenSSL-Win32\bin
LIBS += -L D:\OpenSSL-Win32\lib -llibcrypto
LIBS += -L D:\OpenSSL-Win32\lib -llibssl

And this is the code that triggers the error:

QString Commands::getPublicIp()
{

    QString temp;

    QNetworkAccessManager networkManager;
    QUrl url("http://api.ipify.org");

    QString query = "format=json";

    url.setQuery(query);

    QNetworkReply* reply = networkManager.get(QNetworkRequest(url));

    QObject::connect(
                reply
                , &QNetworkReply::finished
                , [&](){

                        if(reply->error() != QNetworkReply::NoError) {
                            return QString();
                        } else {
                                QJsonObject jsonObject= QJsonDocument::fromJson(reply->readAll()).object();
                                QHostAddress ip(jsonObject["ip"].toString());

                                temp = QString("002 " + ip.toString());
                        }

                reply->deleteLater();
                }
            );

    return temp;

}

I kept getting the qt.network.ssl errors, and after linking openssl I keep getting a compile error:

:-1: error: cannot find D:\OpenSSL-Win32\lib: Permission denied

:-1: error: cannot find -llibssl

collect2.exe:-1: error: error: ld returned 1 exit status

Even though I am not currently using OpenSSL, I am willing to use it later.

[aha_1980]

@Kosta

Qt is loading the SSL library dynamic at runtime, so you don't need to link against.

IIRC, Qt 5.9 only supports OpenSSL 1.0, as 1.1 is binary incompatible.

[Kosta]

I just reinstalled version 0.9 and removed links, still getting the errors, and I am not getting any answer from the http request @aha_1980

[Pablo J. Rogina]

@Kosta maybe this post can help a little. I guess you're missing files libeay32.dll, libssl32.dll and
ssleay32.dll available to your application in the path (it's usual to copy them in same folder as your .exe)

[SGaist]

Hi,

As @aha_1980 wrote, Qt 5.9 supports the 1.0 series. You should use the latest of it. There's no reason to use an outdated and unsupported version like 0.9.

On a side note, why not print something in case of an error to have a clue about what is happening ?
The reply also provides an error signal that you should connect to.

[NikMiller]

C:\Qt\your version QT\Tools\mingw491_32\opt\bin : libeay32.dll, ssleay32.dll
copy them in same folder as your .exe