mitmproxy/doc-src/dev/architecture.html

To give you a better understanding of how mitmproxy works, mitmproxy's high-level architecture is detailed
in the following graphic:

<img class="img-responsive" src="@!urlTo('schematics/architecture.png')!@">

<a href="@!urlTo('schematics/architecture.pdf')!@">(architecture.pdf)</a>
<p>Please don't refrain from asking any further
questions on the mailing list, the IRC channel or the GitHub issue tracker.</p>