Single Page App won't show up in iframe on a asp.net web app

Question

I am trying to get a Single Page application to show up in an iframe on a separate asp.net web application.

I can get just about anything else to show up in that iframe except single page apps. This is all for testing purposes for a current web application being used so I have to do it this way.

This is the html:

<iframe name="frameMain" width="800" height="450" src="http://localhost:51219 ">
</iframe>

When I debug it I get a 403 forbidden error.

Answer 1

I figured it out. You need to specify the SPA's startup page in the src. I am still not sure as to why it wouldn't just go right to the startup page to begin with.