This is a set of samples of HTTP request and response headers, from browsers to Web sites. It is intended to inform decisions (including, but not limited to, header compression) in the design of HTTP 2.0.
Samples are in directories that indicate who generated them, and are named using the primary Web site that was used to do so. They are in HAR format, and can be viewed using the HAR viewer.
There are an absurd number of caveats to understand when using these traces.
- They are not representative of the whole Web
- They are not representative of all browsers
- They are not representative of all users' interaction patterns
- They may contain noise in the form of irrelevant requests
- They are a snapshot of how a few Web sites operated at a given time, for a given user
If you'd like to add more traces to the sample, please fork this repository, add a directory with your samples (using your github user name for the directory name), and make a pull request.
When contributing, remember to:
- Turn off as much other software that generates HTTP requests as possible, to limit noise
- Remove cookies and other PII-containing tokens, or (preferably) use a "fresh" browser
- Do a sanity check on the traces to assure that they're sensible
Any HAR-producing tool can be used. For non-SSL traffic, hdrgrab is preferred, because it records the headers as they happen "on the wire".
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