PayPal IPN 卷曲返回"SSL connect error"

Question

我正在尝试在系统中实现IPN，但显示错误

SSL连接错误

TLS版本显示TLS 1.0

这是客户的系统。我从PayPal网站下载了代码。我目前正在测试它。

但是它会引发错误

    <?php
    ini_set('display_errors', 1);
    ini_set('display_startup_errors', 1);
    error_reporting(E_ALL);
    session_start();

    $ch = curl_init('https://www.howsmyssl.com/a/check');
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    $data = curl_exec($ch);
    curl_close($ch);
    $json = json_decode($data);
    echo $json->tls_version;


    file_put_contents('NAB/paypal-ipn.txt', var_export($_POST, true));
    echo "ipn processing";
    // STEP 1: read POST data
    // Reading POSTed data directly from $_POST causes serialization issues with array data in the POST.
    // Instead, read raw POST data from the input stream.
    $raw_post_data = file_get_contents('php://input');
    $raw_post_array = explode('&', $raw_post_data);
    $myPost = array();
    foreach ($raw_post_array as $keyval) {
      $keyval = explode ('=', $keyval);
      if (count($keyval) == 2)
        $myPost[$keyval[0]] = urldecode($keyval[1]);
    }
    echo "<br>1";
    // read the IPN message sent from PayPal and prepend 'cmd=_notify-validate'
    $req = 'cmd=_notify-validate';
    if (function_exists('get_magic_quotes_gpc')) {
      $get_magic_quotes_exists = true;
    }
    echo "<br>2";
    foreach ($myPost as $key => $value) {
      if ($get_magic_quotes_exists == true && get_magic_quotes_gpc() == 1) {
        $value = urlencode(stripslashes($value));
      } else {
        $value = urlencode($value);
      }
      $req .= "&$key=$value";
    }
    echo "<br>3";
    // Step 2: POST IPN data back to PayPal to validate
    $ch = curl_init('https://www.sandbox.paypal.com/cgi-bin/webscr');
    //$ch = curl_init('https://www.paypal.com/cgi-bin/webscr');
    curl_setopt($ch, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_1);
    curl_setopt($ch, CURLOPT_POST, 1);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER,1);
    curl_setopt($ch, CURLOPT_POSTFIELDS, $req);
    curl_setopt($ch, CURLOPT_SSLVERSION, 6);
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 1);
    curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2);
    curl_setopt($ch, CURLOPT_FORBID_REUSE, 1);
    curl_setopt($ch, CURLOPT_HTTPHEADER, array('Connection: Close'));
    // In wamp-like environments that do not come bundled with root authority certificates,
    // please download 'cacert.pem' from "http://curl.haxx.se/docs/caextract.html" and set
    // the directory path of the certificate as shown below:
    // curl_setopt($ch, CURLOPT_CAINFO, dirname(__FILE__) . '/cacert.pem');
    echo "<br>3";
    if ( !($res = curl_exec($ch)) ) {
       error_log("Got " . curl_error($ch) . " when processing IPN data");
       echo curl_error($ch);
      curl_close($ch);
      //exit;
    }

Answer 1

如果'howsmyssl'报告系统仅支持TLS v 1.0，则可能需要进行升级以支持TLS v 1.2。curl_setopt($ch, CURLOPT_SSLVERSION, 6);请求TLS V 1.2（请参阅PHP Curl（带NSS）中的列表，可能是在连接到HTTPS时使用TLS的SSLV3）。

此外，截至2017年6月30日，PayPal将需要TLS v 1.2（请参阅https://www.paypal-knowledge.com/infocenter/infocenter/infocenter/infocenter/index?page=content＆widgetView = widgetView = = true = true＆amp；= en_us和php curl设置SSL版本）。

您可以通过更改为curl_setopt($ch, CURLOPT_SSLVERSION, 4);。

我在实现PayPal IPN侦听器代码时也有类似的问题。该脚本将停止执行您提供的代码中的步骤2在哪里开始。我通过从http://curl.haxx.se/docs/caextract.html下载cacert.pem解决了它。然后，我将下载的文件复制到与paypalipnlistener.php的同一文件夹，然后在paypalipnlistener.php // curl_setopt($ch, CURLOPT_CAINFO, dirname(__FILE__) . '/cacert.pem');中删除以下代码到 curl_setopt($ch, CURLOPT_CAINFO, dirname(__FILE__) . '/cacert.pem');，并成功执行脚本。