How do change server ipaddress & port about extensions-api HOT 16 CLOSED

Can we run npm start & tabeau server on the same port

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I am running server on localhost://8000 & extension api npm start on localhost://8765.

Here when i tried to change tableau server port to 8765, it doesnt wok as npm is already running in that port.

Now when i publish my workbook, it will have URL starting with localhost://8000, so in extension javascript file , when i want to access window.location.URL it gives me "localhost://8765/....." but i need the published tableau URL.

If i try to access via window.parent.location.href it gives error

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Uncaught DOMException: Blocked a frame with origin "http://localhost:8765" from accessing a cross-origin frame

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You can modify the package.json to change what command is run when you type 'npm start'

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will it avoid cross origin error? but in package.json there is no way to change to the port to 8000

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i have changed the 8765 in package.json to 8000

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Error: listen EADDRINUSE 0.0.0.0:8000

getting this error as tableau server running on this

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That means you have another application running on that port. It seems like you already have Server running on 8000, so you won't be able to run the web app on port 8000 too.

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If you're just trying to have them on the same port to avoid that cross-origin error, then that won't work. You can't get the url of the parent url . That would have to be something we add to the API. Can you explain why you need the url of the dashboard?

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if the ports are different, then when i access parent.location.href in webapp, then it gives error saying that its an cross origin requests

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1. Tableau server running on localhost://8000
2. Extension API running on localhost://8765

Now in the default "filtering.js" file we are capturing & displaying all filtered results.
This filtered results along with the pubslished dashboard URL, we have pass to some ajax request.
but , tableau dashboard URL is created with "localhost://8000". Now in filtering.js, when i try to fetch window.location.href it gives me URL of "filtering.html" loaded in iframe but i want parent location. When i write console.log(parent.location.href) it gives me cross origin error.

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or is there any option to enable cors in the node modules?

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Sorry, what I'm hearing is that you want the dashboard URL. But why does your Extension need that? What will it do with it?

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yes exactly, you got me right.
I need that URL because we create an simple "export" button in the extension object. On clicking that button , i need to capture the dashboard URL & make an ajax call to our another web server. In that web server, we have already have stored this dashboard URL in the DB. So ajax request sent by us from extension object, need to include dashboard URL for our web server to do some process.

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so thinking can we enable cors in the node modules of extension object. If yes, then please tell me how can we achieve it?

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Hi pallaviMN,

You can use document.referrer to get the URL of a published workbook. This will avoid the CORS issue. More info in this post.

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