The PayPal email I received regarding changes to the IPN code contains incorrect information.
The code examples are missing the "content-length" header. Without this header, the IPN script will fail.
The example PHP code stated this :
PHP
// post back to PayPal system to validate
$header="POST /cgi-bin/webscr HTTP/1.1\r\n";
$header .="Content-Type: application/x-www-form-urlencoded\r\n";
$header .="Host: www.paypal.com\r\n";
$header .="Connection: close\r\n\r\n";
The correct PHP code is :
$header = "POST /cgi-bin/webscr HTTP/1.1\r\n";
$header .= "Content-Type: application/x-www-form-urlencoded\r\n";
$header .= "Content-Length: " . strlen($req) . "\r\n";
$header .= "Host: www.paypal.com\r\n";
$header .= "Connection: close\r\n\r\n";
You may want to consider fixing this in your next notification email. I didn't relaize there was even an issue until I started receiving complaints from customers this morning about orders not being processed.
This is the error message I received when the 'content-length' header was not included :
HTTP/1.1 411 Length Required\r\n
Server: AkamaiGHost\r\n
Mime-Version: 1.0\r\n
Content-Type: text/html\r\n
Content-Length: 222\r\n
Expires: Fri, 19 Jul 2013 16:36:36 GMT\r\n
Date: Fri, 19 Jul 2013 16:36:36 GMT\r\n
Connection: close\r\n
\r\n
<HTML><HEAD>\n
<TITLE>Bad Request</TITLE>\n
</HEAD><BODY>\n
<H1>Bad Request</H1>\n
Your browser sent a request that this server could not understand.<P>\n
Reference*********************************************\n
</BODY>\n
</HTML>\n
