After drawing a picture, I may be close to having a program run itself as the child of some other program and proxy all of its I/O.
_May_.
_May_.
Behold, I hath learned stuff about pipes and select()! This SMTP proxy does what I want. Now to translate to DJB C: https://gist.github.com/schmonz/6d8da539a5a43e99d5ad5810cde05b22