QtCUrl post doesn´t work anymore (Linux nok...windows ok) - c++

Question

I have been running this function since last year (Linux and Windows) within my program.
Now I need to implement a new function and my new build is no longer running.
I have other CUrl functions using POST and the results are the same: nok, but my GET functions are ok.
I have another computer (with Mint 19) where this program is running smoothly, but on my computer (using Mint 19, too) the compilation is fine, but it starts curl.exec (I'm using Qtcurl library and inside has a call to curl_easy_perform) and no longer returns.
I have this package installed: libcurl4-openssl-dev
It's okay to compile my program (Linux and Windows). This program is running on Windows.
My problem is just new builds in Mint19.
What is missing to install?
QUrl url("https://pos-api.ifood.com.br/oauth/token");
QUrlQuery q;
q.addQueryItem("client_id", id);
q.addQueryItem("client_secret", secret);
q.addQueryItem("grant_type","password");
q.addQueryItem("username",user);
q.addQueryItem("password",password);
url.setQuery(q);
QtCUrl::Options opt;
opt[CURLOPT_URL] = url;
opt[CURLOPT_POST] = true;
opt[CURLOPT_FOLLOWLOCATION] = true;
opt[CURLOPT_FAILONERROR] = true;
opt[CURLOPT_SSL_VERIFYPEER]= false; // windows
QStringList headers;
headers
<< "cache-control: no-cache"
<< "content-type: application/x-www-form-urlencoded";
opt[CURLOPT_HTTPHEADER] = headers;
val = cUrl.exec(opt); // PROBLEM HERE!!!!
if (cUrl.lastError().isOk()) {
bool ok;
// json is a QString containing the JSON data
QtJson::JsonObject result = QtJson::parse(val, ok).toMap();
token=result["access_token"].toString();
return token;
}
else {
return "";
}

Answer 1

I changed all my methods.
The first funcion is a POST with query.
QString iFood_getToken2(QString token, int *expira, QString id, QString secret, QString user, QString password, QString host){
if(host!=hostname || !ifood_ativo){
qDebug() << "iFood_getToken2 saindo...";
return "";
}
if(*expira>IFOOD_TASK){
*expira-=IFOOD_TASK;
// qDebug() << "expira " << *expira;
return token; // token válido
}
QUrl url("https://pos-api.ifood.com.br/oauth/token");
QUrlQuery q;
q.addQueryItem("client_id", id);
q.addQueryItem("client_secret", secret);
q.addQueryItem("grant_type","password");
q.addQueryItem("username",user);
q.addQueryItem("password",password);
url.setQuery(q);
QNetworkRequest request(url);
request.setHeader(QNetworkRequest::ContentTypeHeader, "application/json");
request.setAttribute(QNetworkRequest::CacheLoadControlAttribute, QVariant(int(QNetworkRequest::AlwaysNetwork)));
QJsonObject json;
QNetworkAccessManager nam;
QNetworkReply *reply = nam.post(request, QJsonDocument(json).toJson());
while (!reply->isFinished())
{
qApp->processEvents();
}
QByteArray response_data = reply->readAll();
QJsonDocument jsonr = QJsonDocument::fromJson(response_data);
reply->deleteLater();
//qDebug() << "ifoodtoken2 " << jsonr["access_token"].toString();
return jsonr["access_token"].toString();
}
I did implement these new functions:
There is a new implementation for a GET and PATCH
So, from now on I dont need to use CUrl library anymore
QJsonDocument networkGet(QString strUrl, QString token){
QUrl url(strUrl);
QNetworkRequest request(url);
request.setAttribute(QNetworkRequest::CacheLoadControlAttribute, QVariant(int(QNetworkRequest::AlwaysNetwork)));
QString headerData = "bearer " + token;
request.setRawHeader("Authorization", headerData.toLocal8Bit());
QJsonObject json;
QNetworkAccessManager nam;
QNetworkReply *reply = nam.get(request);
while (!reply->isFinished())
{
qApp->processEvents();
}
QByteArray response_data = reply->readAll();
QJsonDocument json_response = QJsonDocument::fromJson(response_data);
reply->deleteLater();
//qDebug() << "networkGet " << json_response << reply->errorString() << headerData ;
return json_response;
}
int networkPatch(QString strUrl, QString token, QJsonDocument json){
QUrl url(strUrl);
QNetworkRequest request(url);
request.setAttribute(QNetworkRequest::CacheLoadControlAttribute, QVariant(int(QNetworkRequest::AlwaysNetwork)));
request.setHeader(QNetworkRequest::ContentTypeHeader, "application/json");
QString headerData = "bearer " + token;
request.setRawHeader("Authorization", headerData.toLocal8Bit());
QNetworkAccessManager nam;
QByteArray * _b_arr = new QByteArray (QString(json.toJson()).toLatin1());
QBuffer *_qbf_upload =new QBuffer (_b_arr);
QNetworkReply *reply = nam.sendCustomRequest(request,"PATCH",_qbf_upload);
while (!reply->isFinished())
{
qApp->processEvents();
}
QByteArray response_data = reply->readAll();
QJsonDocument json_response = QJsonDocument::fromJson(response_data);
reply->deleteLater();
qDebug() << "networkPatch " << reply->error() << json_response << reply->errorString() << headerData ;
return reply->error();
}