https/ssl在通过curl发送HTML时引发问题

我在一个网站上有一个curl脚本，它使用curl向服务器发出post请求。另一方面，我使用wkhtmltopdf用收到的HTML生成PDF，当网站上没有启用https时，这很好，但一旦我启用https，PDF生成就会出现错误。

我的卷曲脚本

$url = Yii::app()->params['pdfUrl']; //Equals http://xxx.xx.xxx.xxx/server/?r=pdf/generatePdf
            $body = array(
                "client_url"=>Yii::app()->params['pdfClientURL'],
                "client_id"=>Yii::app()->params['pdfClientID'],
                "title"=>urlencode($title),
                "content"=>urlencode(($content))
            );
            foreach($body as $key=>$value) { $body_str .= $key.'='.$value.'&'; }
                rtrim($body_str,'&');
            curl_setopt ($c, CURLOPT_POST, true);
            curl_setopt ($c, CURLOPT_POSTFIELDS, $body_str);
            curl_setopt ($c, CURLOPT_RETURNTRANSFER, true);
            $pdf = curl_exec ($c);
            curl_close ($c);
            header("Content-Type: application/pdf");
            header("Cache-Control: no-cache");
            header("Accept-Ranges: none");
            header("Content-Disposition: attachment; filename=".str_replace(' ', '_', $title).".pdf");
            echo $pdf;
            Yii::app()->end();

这可能是https造成的？

WKHTML2PDF 错误

WKPDF system error: <pre>Loading pages (1/6)
[> ] 0%
[======> ] 10%
[===========> ] 19%
QSslSocket: cannot call unresolved function SSLv23_client_method
QSslSocket: cannot call unresolved function SSL_CTX_new
QSslSocket: cannot call unresolved function SSL_library_init
QSslSocket: cannot call unresolved function ERR_get_error
QPixmap: Cannot create a QPixmap when no GUI is being used
QPixmap: Cannot create a QPixmap when no GUI is being used
QPixmap: Cannot create a QPixmap when no GUI is being used
QPixmap: Cannot create a QPixmap when no GUI is being used
QPixmap: Cannot create a QPixmap when no GUI is being used
QPixmap: Cannot create a QPixmap when no GUI is being used
[============================================================] 100%
Counting pages (2/6)
[============================================================] Object 1 of 1
Resolving links (4/6)
[============================================================] Object 1 of 1
Loading headers and footers (5/6)
Printing pages (6/6)
[> ] Preparing
[============================================================] Page 1 of 1
Done
</pre>