Issue with Transfer Samples in Connector Tutorial #190

anstrasser · 2024-01-10T10:31:31Z

anstrasser
Jan 10, 2024

Hello everyone,

I'm currently a student working on my thesis about dataspaces, and I'm going through the Connector Tutorial. I'm encountering difficulties in Step 5 of the "Transfer Sample 01 Negotiation." As per the instructions, the following cURL command should be used:

curl -d @transfer/transfer-01-negotiation/resources/negotiate-contract.json \
  -X POST -H 'content-type: application/json' http://localhost:29193/management/v2/contractnegotiations \
  -s | jq

The response I receive looks like this:

<html>
<head>
    <meta http-equiv="Content-Type" content="text/html;charset=ISO-8859-1" />
    <title>Error 400 Bad Request</title>
</head>
<body>
    <h2>HTTP ERROR 400 Bad Request</h2>
    <table>
        <tr>
            <th>URI:</th>
            <td>/management/v2/contractnegotiations</td>
        </tr>
        <tr>
            <th>STATUS:</th>
            <td>400</td>
        </tr>
        <tr>
            <th>MESSAGE:</th>
            <td>Bad Request</td>
        </tr>
        <tr>
            <th>SERVLET:</th>
            <td>EDC-management</td>
        </tr>
    </table>
</body>
</html>

I suspect the issue might be with the negotiate-contract.json file, specifically with "@id": "{{contract-negotiation-id}}". It seems that this ID may not be known at this stage. Could someone help me overcome Step 5 of the Transfer Sample and successfully complete the negotiation?

Thanks in advance for your assistance!

Andy

P.S.: I have a suspicion that there might be a missing step before Step 5, but I'm not entirely sure.

Answered by ndr-brt

Jan 10, 2024

Yes, you need to replace the placeholder with the actual contract offer it (not negotiation).
That was described in the sample script but it did get eventually lost, will provide a PR to fix that.

View full answer

ndr-brt · 2024-01-10T13:20:50Z

ndr-brt
Jan 10, 2024
Collaborator

Yes, you need to replace the placeholder with the actual contract offer it (not negotiation).
That was described in the sample script but it did get eventually lost, will provide a PR to fix that.

3 replies

anstrasser Jan 17, 2024
Author

Hi,
I've gone through the tutorial again from the beginning, with the changes you mad. However, I'm still encountering the same error. Additionally, in the Provider Terminal, I see:
WARNING 2024-01-17T09:43:22.8336145 Error expanding JSON-LD structure JsonLdError[code=There was a problem encountered loading a remote context [code=LOADING_REMOTE_CONTEXT_FAILED]., message=There was a problem encountered loading a remote context [code=LOADING_REMOTE_CONTEXT_FAILED].] (...) Caused by: JsonLdError[code=The document could not be loaded or parsed [code=LOADING_DOCUMENT_FAILED]., message=URL scheme [http] is not supported.]

Could you please assist me further in resolving this issue? Are there additional adjustments or steps that I should consider? Your help on this matter would be greatly appreciated.

ndr-brt Jan 17, 2024
Collaborator

are you using windows right? that's not specified but unfortunately they don't work on windows (the EDC is meant to run on a linux machine), this could be an issue to be added

anstrasser Jan 17, 2024
Author

Yes, I am using Windows. Thank you for the information. I'll try it on Linux at a later time.

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Issue with Transfer Samples in Connector Tutorial #190

anstrasser Jan 10, 2024

Replies: 1 comment · 3 replies

ndr-brt Jan 10, 2024 Collaborator

anstrasser Jan 17, 2024 Author

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anstrasser
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ndr-brt
Jan 10, 2024
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anstrasser Jan 17, 2024
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anstrasser Jan 17, 2024
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