GnuTLS recv error (-9): A TLS packet with unexpected length was received. - with Paypal Website Payment Pro

[Zachary Krebs]

Nikos,

Do you have a suggestion for me - is it related to an issue with
GnuTLS or Libcurl? If no, then is it a library on Ubuntu 10.04? Or is
it a flaw in the software I'm using? Drupal / Ubercart / Ubercart
Payment Gateway for Paypal Website Payment Pro? This feels like a
needle in the haystack for me.


On Tue, Feb 1, 2011 at 11:09 PM, Nikos Mavrogiannopoulos
<nmav at gnutls.org> wrote:
> On 02/01/2011 06:12 PM, Zachary Krebs wrote:
>> I sent this to the libcurl community and they asked me to ping gnutls
>> to see where the issue resides:
>>
>> Thanks for considering my support request, and I hope I do not
>> agitate/irritate anyone by posting in the wrong place.
>> I looked here first: http://curl.haxx.se/mail/lib-2010-06/0169.html
>> and did not find a resolution.
>> I am attempting to use the Website Payment Pro Paypal module with Drupal CMS.
> [...]
>> When I attempt to complete a payment, I get an error in my log:
>> "GnuTLS recv error (-9): A TLS packet with unexpected length was received"
>
> Several sites terminate the TLS connection without following the TLS
> protocol (i.e. sending closure alerts), but rather terminate the TCP
> connection directly. This is a relic of SSLv2 and it seems other
> implementations ignore this error. GnuTLS doesn't and thus prints
> this error. You could ignore it, but then you could not distinguish
> between a premature connection termination (i.e. by someone injecting
> a stray TCP termination packet) and normal termination.
>
> regards,
> Nikos
>