Will your Paypal IPN script stop working on February 1, 2013?

by McBob
1 replies
A friendly reminder in case some of you have not yet updated your scripts.

copy&paste from Paypal's message (from September 2012):
In a bulletin dated October 18, 2011, we announced that we were going to expand the number of IP addresses for www.paypal.com to improve our site's performance, scalability and availability. As part of this transition, we planned to discontinue support for HTTP 1.0 protocol starting February 1, 2013.

We have recently identified that this change may impact the ability of some of our merchants to perform IPN (Instant Payment Notification) post-back validation or PDT (Payment Data Transfer) posts to www.paypal.com. This happens when the IPN or PDT scripts use HTTP 1.0 protocol and do not include the "Host: www.paypal.com" header in the HTTP request.

Additional Details

Starting February 1, 2013, we will require all incoming requests to have a "Host" header which complies with HTTP 1.1 Specifications. This header was not required under HTTP 1.0. IPN and PDT scripts using HTTP 1.0 may start failing with "HTTP/1.0 400 Bad Request" errors after February 1, 2013, which will result in IPN messages not being validated successfully, or PDT scripts not being able to retrieve transaction information.

Action Required before February 1, 2013
Merchants need to update their IPN and/or PDT scripts to use HTTP 1.1, and include the "Host" header in the IPN postback script.
#2013 #february #ipn #paypal #script #stop #working
  • Profile picture of the author Arunabh Singh
    How does this affect us? Will my buy now buttons stop working? Will I have to create new buttons?
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