LtiDeepLinkingResponse is adding resources to module but erroring when user clicks on the link

akazaLTI

I am experimenting with adding deep linking to our LMS external tool integration. I am able to add the resource links in module but when I or users click on the resource links added, getting the error.

"Couldn't find valid Settings for this link"

I think I am missing the exact format of LtiResourceLink that Canvas LMS is looking for below is a quicktime video showing where I am and what the error is.

 

Here is the relevant part of JWT token I am sending back as LtiDeepLinkingResponse

"https://purl.imsglobal.org/spec/lti-dl/claim/content_items": [
    {
      "type": "ltiResourceLink",
      "title": "AWS Lambda Lab1",
      "url": "https://dev.lti-compliant-lxp.training.aws.dev/lab1",
    },
    {
      "type": "ltiResourceLink",
      "title": "S3 Lab2",
      "url": "https://dev.lti-compliant-lxp.training.aws.dev/lab2",
      "custom": {
        "resource": "Lab2"
      }
    }
  ]

 

error.png

matthew_buckett

I am not sure, but I think Canvas matches on URLs for LTI links returned in deep linking responses. So unless your LTI tool is registered as using https://dev.lti-compliant-lxp.training.aws.dev/lab1 it won't know which tool should be launched.

I think you can use the domain field of your LTI configuration to say that any link for a specific domain should be handled by your tool as outlined here: https://community.canvaslms.com/t5/Canvas-Developers-Group/What-is-the-purpose-of-the-domain-field-in-an-LTI-config/m-p/108321/highlight/true#M2241