Hmmm, describing this may have been enough Duck Debugging to point me to where I need to go... :)
I am nowhere approaching a "JavaScript dev", so I set up a node-red server to handle various Amazon SP-API related duties. This might be an issue with my implementation, function code, or Amazon's Selling Partner API itself.
I created an endpoint that uses aws4 to generate the signature based on query data submitted via a GET, returns it, and is then used for requests in our server. It works for everything except POST requests. Those always return a similar "Close, but no cigar" message from Amazon:
Here's the function where I have tried enabling and disabling various options to try to get it to work:
They all return a result similar to the one shown.
When I run the identical request in Postman using the same credentials, it works. However, I noticed that Postman also generates a X-Amz-Content-Sha256 header which is not a hash of the just body text.
Any ideas here? Is there any way to get aws4 to return the Canonical Request and StringToSign for debugging purposes?
Thanks in advance!
Hmmm, describing this may have been enough Duck Debugging to point me to where I need to go... :)
I am nowhere approaching a "JavaScript dev", so I set up a node-red server to handle various Amazon SP-API related duties. This might be an issue with my implementation, function code, or Amazon's Selling Partner API itself.
I created an endpoint that uses aws4 to generate the signature based on query data submitted via a GET, returns it, and is then used for requests in our server. It works for everything except POST requests. Those always return a similar "Close, but no cigar" message from Amazon:
Here's the function where I have tried enabling and disabling various options to try to get it to work:
They all return a result similar to the one shown.
When I run the identical request in Postman using the same credentials, it works. However, I noticed that Postman also generates a X-Amz-Content-Sha256 header which is not a hash of the just body text.
Any ideas here? Is there any way to get aws4 to return the Canonical Request and StringToSign for debugging purposes?
Thanks in advance!