CF Live Headers od CricFacts

Monitor all HTTP/HTTPs traffic from your browser.
Live HTTP Headers logs all HTTP traffic between your Chrome browser and the Internet.

This extension can be helpful if you want to:
* Debug web application
* Follow redirect path
* See cookies sent by remote site
* See which web server the remote site is using
* See the headers sent to the server
* See which headers the server returns
* See the HTTP verbs used.
* See Response Codes

You can from the settings dialog choose what type of resource you want to capture.