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cedricj425261
Known Participant
Nov 22, 2022 2:56 PM UTC
Question

Why multi part request body PDF document is failing in my Integration (extension changed)

Hi,

I've created an Integration component and I have a PDF to send to a remote REST API (by POST method).

So I've created an Appian document, and I've upload a PDF file (Test1.pdf) as it.

When I call the remote API, I get an error in the response : "developerMessage : Extension non authorized - filename: "Test1.pdf.zip"  "

Do you know why this component is adding ".zip" extension to the PDF file ?

Of course, I've tested it before in Postman and all works fine.

In my request body (in Appian), I've set my param like this :

Name : "document"  

Content Type : Document (auto-detect)

Value : (RI is uploaded with Test1.pdf)

I've tried another way : Content Type = Custom (with  application/pdf) but I obtain another error : "Internal error: Required request part 'document' is not present"

Any idea ?

7 replies

stefanhelzle0001
stefanhelzle0001
Brainy
Nov 22, 2022 3:13 PM UTC

Did you check the outgoing headers in the HTTP request? Do they include any hint on the ZIP document type or file name?

cedricj425261Author
Known Participant
Nov 22, 2022 3:22 PM UTC

I've just saw the encoding field (gzip), but not any Zip document type for the requested param :

POST /my-ws/rest/v1/documents/upload HTTP/1.1
Content-Type: multipart/form-data; boundary=TnQmfygKfP801A_kE1bGL-7YAFk_k6gl9
Content-Length: 36084
Host: my-host.fr
Connection: Keep-Alive
User-Agent: Appian
Accept-Encoding: gzip,deflate

--TnQmfygKfP801A_kE1bGL-7YAFk_k6gl9
Content-Disposition: form-data; name="document"; filename="Test1.pdf"
Content-Type: application/pdf
Content-Transfer-Encoding: binary

Binary content not shown for document, Test1.pdf (33.94 KB).

--TnQmfygKfP801A_kE1bGL-7YAFk_k6gl9
Content-Disposition: form-data; name="comment"
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
test 1

--TnQmfygKfP801A_kE1bGL-7YAFk_k6gl9
Content-Disposition: form-data; name="label"
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
SAS1

--TnQmfygKfP801A_kE1bGL-7YAFk_k6gl9
Content-Disposition: form-data; name="meta"; filename="Test1.xml"
Content-Type: application/xml
Content-Transfer-Encoding: binary

Binary content not shown for document, Test1.xml (< 1 KB).

--TnQmfygKfP801A_kE1bGL-7YAFk_k6gl9--

stefanhelzle0001
stefanhelzle0001
Brainy
Nov 22, 2022 3:25 PM UTC

This looks good to me. I am not sure about the PDF format. I assume this also uses some kind of compression. If this other system now checks the binary content for a ZIP signature, this might lead to issues. But this is just guessing !?!

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