HTTPS requests to paypal sandbox fail

Question

I can't currently use the PayPal Sandbox to test my shopping-cart integrations. When i access the sandbox in a browser or via curl, all i get is connection errors.

Here's an example curl-session:

curl -v "https://api-3t.sandbox.paypal.com/nvp?user=test"
*   Trying 173.0.82.83...
* TCP_NODELAY set
* Connected to api-3t.sandbox.paypal.com (173.0.82.83) port 443 (#0)
* TLS 1.2 connection using TLS_RSA_WITH_AES_256_CBC_SHA256
* Server certificate: api-3t.sandbox.paypal.com
* Server certificate: Symantec Class 3 Secure Server CA - G4
* Server certificate: VeriSign Class 3 Public Primary Certification Authority - G5
> GET /nvp?user=test HTTP/1.1
> Host: api-3t.sandbox.paypal.com
> User-Agent: curl/7.51.0
> Accept: */*
> 
* SSLRead() return error -9806
* Curl_http_done: called premature == 1
* Closing connection 0
curl: (56) SSLRead() return error -9806

Any hints if this is a serverside issue or something i can work around?

Thanks!

**Update**: I solved this issue by using POST instead of GET, when talking to the sandbox. Go figure! — zıəs uɐɟəʇs, Mar 06 '18 at 08:53

score 2 · Answer 1 · answered Jul 28 '17 at 19:49

2

Looks like the NVP/SOAP integration method of Paypal Express Checkout is deprecated as of January 1, 2017. The live URL (https://api-3t.paypal.com/nvp) seems to work for now, but this might be why the sandbox doesn't work anymore.

answered Jul 28 '17 at 19:49

Mike H

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That's probably it. Thanks Mike! – zıəs uɐɟəʇs Aug 04 '17 at 09:37

score 2 · Accepted Answer · answered Mar 06 '18 at 11:23

2

I don't exactly understand why, but using POST instead of GET when submitting data to the PayPal Sandbox solves the problem nicely. No more weird SSL-errors.

answered Mar 06 '18 at 11:23

zıəs uɐɟəʇs

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score 0 · Answer 3 · answered Jul 13 '17 at 05:59

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Found below answer to curl 56 error . Hope that could help work out of the problem.

curl (56) Recv failure

PHP CURL Error - curl: (56) Recv failure: Connection reset by peer

answered Jul 13 '17 at 05:59

phillixzk

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Thanks! I also get a different error message, when accessing the URL in a Webbrowser, so this is not a curl-only-problem. – zıəs uɐɟəʇs Jul 13 '17 at 11:44

HTTPS requests to paypal sandbox fail

3 Answers3