.NET HttpClient logging to HTTP Archive files

WARNING: This is not a production quality code!

Often it's beneficial to log application HTTP requests for later analysis or support. This small code sample shows how to easily insert a logger into applications using the .NET HttpClient class. The logger creates a minimalistic HAR file that is loadable in tools like Fiddler.

Limitations:

• Request timings are not reported correctly
• Header and content sizes are not reported correctly
• Cookies are not written to the output
• Other things marked with FIXME in the sample code