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Written by alcinnz on 2025-01-21 at 17:55

Studying Ruffle's (Python networking framework) implementation of SMTP...

There's a utility for outputting RFC822-formatted dates, a counter/iterator for generating IDs used externally, "quoting" email addresses in triangular brackets, a class for regex-parsing email addresses, & a wrapper class representing users.

Core SMTP server class has a handful of properties, implements callback methods for managing connections & reporting errors to clients, customizable via template methods, ...

1/2?

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Toot

Written by alcinnz on 2025-01-21 at 18:06

... a widely used utility-method to send code-prefixed responses & wrappers thereupon, & received lines are dynamically dispatched to methods representing a state machine & in turn methods for each command. These commands gathers provided data, regex-parse & validates their input, & defers to surrounding to actually send these emails.

This class has a corresponding factory class, a reasonably similar implementation for the client-side with several template methods.

2/3!

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