Question

I have a chrome extension that displays UI from a web service as its own inside an iframe inside an extension page. I am injecting some content scripts into the remote UI using:

"content_scripts": [
  {
    "matches" : [ "https://mywebservice.com/frontend/*" ] ,
    "js" : [ "frontend-page-contentscript.js" ],
    "all_frames" : true
  }
]

Which is allowed because of (also in manifest.json): [EDIT: This turns out NOT to be required to run content-scripts in the iframe – but removing it doesn’t make AJAX work the way I expect].

"sandbox" : {
  "pages" : [
    "cocoon_page_proxy.html"
  ]
}

However, when I make a trivial ajax call (not from the content script, from the iframe):

$.get('asdf',function success(data) { console.log("Success"); },
             function error(xhr) { console.log("Error: "+xhr.responseText); });

I don’t get any response, it stalls out and gets a “0” for a status. This (in my experience) is usually due to a cross-origin permissions problem, but it shouldn’t be – it’s requesting another resource from the same server the main page came from.

Suggestions?

Answer 1

Sigh – it turns out to be a bug stemming from elsewhere in my extension, in webrequest redirect code.