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page_type description products languages extensions urlFragment
sample
This sample showcases messaging extension feature along with link unfurling.
office-teams
office
office-365
nodejs
contentType createdDate
samples
10-04-2022 20:32s:25
officedev-microsoft-teams-samples-msgext-link-unfurling

Teams Link Unfurl Bot Node.js

If you copy and paste a link from https://www.botframework.com or your ngrok base url, it wil unfurl inside compose area.

  • Interaction with bot Link Unfurling

Prerequisites

  • Microsoft Teams is installed and you have an account
  • NodeJS
  • ngrok or equivalent tunnelling solution

Setup

Note these instructions are for running the sample on your local machine, the tunnelling solution is required because the Teams service needs to call into the bot.

  1. Run ngrok - point to port 3978

    ngrok http --host-header=rewrite 3978

Setup for bot

In Azure portal, create a Azure Bot resource. - For bot handle, make up a name. - Select "Use existing app registration" (Create the app registration in Azure Active Directory beforehand.) - If you don't have an Azure account create an Azure free account here

In the new Azure Bot resource in the Portal, - Ensure that you've enabled the Teams Channel - In Settings/Configuration/Messaging endpoint, enter the current https URL you were given by running ngrok. Append with the path /api/messages

Setup for code

  1. Clone the repository

    git clone https://github.com/OfficeDev/Microsoft-Teams-Samples.git

  2. In a terminal, navigate to samples/msgext-link-unfurling/nodejs

  3. Install modules

    npm install

  4. Update the .env configuration for the bot to use the Microsoft App Id and App Password from the Bot Framework registration. (Note the App Password is referred to as the "client secret" in the azure portal and you can always create a new client secret anytime.) MicrosoftAppTenantId will be the id for the tenant where application is registered.

    • Set "MicrosoftAppType" in the .env. (Allowed values are: MultiTenant(default), SingleTenant, UserAssignedMSI)

  5. Run your bot at the command line:

    npm start

  6. This step is specific to Teams.

    • Edit the manifest.json contained in the appPackage folder to replace your Microsoft App Id (that was created when you registered your bot earlier) everywhere you see the place holder string <<YOUR-MICROSOFT-APP-ID>> (depending on the scenario the Microsoft App Id may occur multiple times in the manifest.json)
    • Zip up the contents of the appPackage folder to create a manifest.zip (Make sure that zip file does not contains any subfolder otherwise you will get error while uploading your .zip package)
    • Upload the manifest.zip to Teams (In Teams Apps/Manage your apps click "Upload an app". Browse to and Open the .zip file. At the next dialog, click the Add button.)

Running the sample

Note the Teams manifest.json for this sample also includes a Search Query. This Messaging Extension is only introduced in order to enable installation, because there is no mechanism for installing a link unfurling feature in isolation.

If you copy and paste a link from https://www.BotFramework.com into the compose message area the link will unfurl. Link-Unfurling

Deploy the bot to Azure

To learn more about deploying a bot to Azure, see Deploy your bot to Azure for a complete list of deployment instructions.

Further reading