16 lines
1 KiB
Markdown
16 lines
1 KiB
Markdown
# Architecture
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## Overview
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BitTorrent clients send Announce and Scrape requests to a _Frontend_.
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Frontends parse requests and write responses for the particular protocol they implement.
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The _TrackerLogic_ interface is used to generate responses for requests and optionally perform a task after responding to a client.
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A configurable chain of _PreHook_ and _PostHook_ middleware is used to construct an instance of TrackerLogic.
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PreHooks are middleware that are executed before the response has been written.
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After all PreHooks have executed, any missing response fields that are required are filled by reading out of the configured implementation of the _Storage_ interface.
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PostHooks are asynchronous tasks that occur after a response has been delivered to the client.
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Because they are unnecessary to for generating a response, updates to the Storage for a particular request are done asynchronously in a PostHook.
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## Diagram
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