Missing response content from request in chrome.devtools.network.onRequestFinished.addListener

[curiousgally]

Hi,

I'm trying to mimic the Network tab in Chrome developer tools panel and wanted to filter network calls in a seperate panel. I'm listening to chrome.devtools.network.onRequestFinished.addListener to filter out the unnecessary calls. However I'm not able to see the response content from the 'req' object in: 

chrome.devtools.network.onRequestFinished.addListener(function(req) {

var url = req.request.url;

var status = req.response.status;

I only see bare minimal fields like status, mime etc  in the response object and no response content. I also tried exporting the HAR from network tab which also has the content missing from response in the export.

Any help is appreciated.

Thanks.

[Richard Radics]

Is it any workaround for this issue?

[Andrey Kosyakov]

This is actually by design, please note that DevTools API docs state this explicitly:

Note that request content is not provided as part of HAR for efficieny reasons. You may call request's getContent() method to retrieve content.

So the req object you're getting in the listener has the getContent() method you can use to retrieve the content. Similarly, in Network Panel, there's a content menu item "Save as HAR with content" that provides HAR that has content.

Best regards,

Andrey.

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