Adding protocol negotiated

[BynariStar]

Is it possible to add a column showing what protocol was used in the web request? Such as quic, h2-14(http/2), spdy, etc.

[pmarks-net]

I'm not sure if Chrome exposes that level of detail. It's not in the webRequest API, at least:

https://developer.chrome.com/extensions/webRequest#event-onResponseStarted

[BynariStar]

window.chrome.loadTimes() contains the information necessary, and it is also synchronous.

[pmarks-net]

That would require injecting a script into every page, and would only cover the top-level request. Doesn't seem worth the invasiveness to extract such a limited amount of data.

I think it would make more sense to file feature request with Chrome to amend the webRequest API.

[BynariStar]

I did some more experimenting. You can get the information through webRequest with the onHeadersReceived event. It is located in the responseHeaders opt_extraInfoSpec.

[pmarks-net]

The headers contain whatever blob of text the server decided to push. Trying to infer the protocol from the content would not be robust.

[timriker]

This extension gets that information at least for the primary page load.

https://github.com/pd4d10/http-indicator

[pmarks-net]

https://github.com/pd4d10/http-indicator works by injecting a content script. I don't think the functionality is useful enough to expand IPvFoo's interaction model from "read" to "read/write".

[timriker]

I don't know if it's exposed anywhere, but if you open the Network tab and add the Protocol column, that shows the protocol.

[pmarks-net]

I'll leave this open in case Chrome ever adds HTTP/3.0 (etc.) to webRequest.onResponseStarted statusLine.

Currently that's visible on Firefox, but Chrome only shows HTTP/1.1