HTTPS request returns damaged HTML body

[ljuhrich]

Hi there,

I recently wanted to write a tool exploring the data which is requestable in facebook's Graph API. However, I created a tool performing a minimal request of the user's id and name.

The code is as following:

void MainWindow::doRequest()
{
    // Read username, access token
    QString id = QString(ui->edUserID->text());
    QString access_token = QString(ui->edAcessToken->text());
 
    socket = new QSslSocket(this);
    QString data = "GET https://graph.facebook.com/"
            + id
            + "?fields=id,name,about&method=GET&format=json&access_token="
            + QUrl::toPercentEncoding( access_token )
            + " HTTP/1.1\r\n"
            + "Host: graph.facebook.com\r\n"
            + "Connection: Keep-alive\r\n"
            + "Accept-Encoding: gzip,deflate\r\n"
            + "User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:21.0) Gecko/20100101 Firefox/21.0\r\n"
            + "Accept: */*\r\n"
            + "\r\n"
            ;
 
    connect(socket, SIGNAL(readyRead()), this, SLOT(resp()));
 
 
    socket->connectToHostEncrypted("graph.facebook.com", 443);
    if (!socket->waitForEncrypted())
    {
        ui->edResponse->setText(socket->errorString());
    }
 
    socket->write(data.toAscii());
 
}
 
void MainWindow::resp()
{
    QString responseData;
    QString tmp = QString(socket->readAll().data());
    responseData += tmp;
 
    ui->edResponse->setText( ui->edResponse->toPlainText() + "\r\n" +  responseData);
}

void MainWindow::doRequest()
{
    // Read username, access token
    QString id = QString(ui->edUserID->text());
    QString access_token = QString(ui->edAcessToken->text());

    socket = new QSslSocket(this);
    QString data = "GET https://graph.facebook.com/"
            + id
            + "?fields=id,name,about&method=GET&format=json&access_token="
            + QUrl::toPercentEncoding( access_token )
            + " HTTP/1.1\r\n"
            + "Host: graph.facebook.com\r\n"
            + "Connection: Keep-alive\r\n"
            + "Accept-Encoding: gzip,deflate\r\n"
            + "User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:21.0) Gecko/20100101 Firefox/21.0\r\n"
            + "Accept: */*\r\n"
            + "\r\n"
            ;

    connect(socket, SIGNAL(readyRead()), this, SLOT(resp()));


    socket->connectToHostEncrypted("graph.facebook.com", 443);
    if (!socket->waitForEncrypted())
    {
        ui->edResponse->setText(socket->errorString());
    }

    socket->write(data.toAscii());

}

void MainWindow::resp()
{
    QString responseData;
    QString tmp = QString(socket->readAll().data());
    responseData += tmp;

    ui->edResponse->setText( ui->edResponse->toPlainText() + "\r\n" +  responseData);
}

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With that code i get a response as following:

HTTP/1.1 200 OK
Access-Control-Allow-Origin: *
Cache-Control: private, no-cache, no-store, must-revalidate
Content-Type: application/json; charset=UTF-8
ETag: "581d7bde213d9c05777d0b6355eb626070e238fe"
Expires: Sat, 01 Jan 2000 00:00:00 GMT
Pragma: no-cache
X-FB-Rev: 831988
X-FB-Debug: GGFSORJxReaKTcVhWmvBe6iBZoQTLyjEFm++YDBAGwM=
Date: Fri, 31 May 2013 18:11:07 GMT
Connection: keep-alive
Content-Length: 58


{
"id": "100002634417763",
"name": "Lukas Juhrich"
}

So far, so well.
But when I add some property fields, e.g. “sports,likes,interests” (added right after the “about” in the request string), the response gets damaged, although the very same request made by facebook's graph-explorer tool returned a correct result:

HTTP/1.1 200 OK
Access-Control-Allow-Origin: *
Cache-Control: private, no-cache, no-store, must-revalidate
Content-Type: application/json; charset=UTF-8
ETag: "d8e5cc3516f63acfeebc1a4db5b4a56b92809b7c"
Expires: Sat, 01 Jan 2000 00:00:00 GMT
Pragma: no-cache
X-FB-Rev: 831988
Content-Encoding: gzip
X-FB-Debug: mm/FphJrwWeme7wz/uyv2FiadQxR6TdJXA//z7xgTnw=
Date: Fri, 31 May 2013 18:14:51 GMT
Connection: keep-alive
Content-Length: 10612


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Do you have any kind of idea / tips etc. for me? thank you!