400 Bad Request: malformed HTTP version in IPN validation
chaver
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Posted on
Dec-09-2019
06:25 AM
I have been using IPNs for many years now and as of a few weeks ago I started getting the following response during IPN validation instead of the expected VALID or INVALID.
Once again my code has not changed and I am calling http 1.1.
Does anyone have any suggestions of what might be causing this?
Thanks
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Reporting APIs
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