Paypal IPN验证无效

Question

在paypal IPN验证期间显示错误。我使用了PHP的paypal IPN代码示例（https://developer.paypal.com/docs/classic/ipn/gs_IPN/#listener）

while (!feof($fp)) { // While not EOF
   $res = fgets($fp, 1024); // **Showing error from this line**
}

A PHP Error was encountered
Severity: Warning
Message: fgets() [function.fgets]: SSL: Connection reset by peer
Filename: controllers/IPN_Listner.php
Line Number: 79