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27 lines
1.5 KiB
Markdown
27 lines
1.5 KiB
Markdown
Building a DNS server in Rust
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=============================
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The internet has a rich conceptual foundation, with many exciting ideas that
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enable it to function as we know it. One of the really cool ones is DNS. Before
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it was invented, everyone on the internet - which admittedly wasn't that many at
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that stage - relied on a shared file called HOSTS.TXT, maintained by the Stanford
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Research Institute. This file was synchronized manually through FTP, and as the
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number of hosts grew, so did the rate of change and the unfeasibility of the
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system. In 1983, Paul Mockapetris set out to find a long term solution to the
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problem and went on to design and implement DNS. It's a testament to his
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genius that his creation has been able to scale from a few thousand
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computers to the Internet as we know it today.
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With the combined goal of gaining a deep understanding of DNS, of doing
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something interesting with Rust, and of scratching some of my own itches,
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I originally set out to implement my own DNS server. This document is not
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a truthful chronicle of that journey, but rather an idealized version of it,
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without all the detours I ended up taking. We'll gradually implement a full
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DNS server, starting from first principles.
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* [Chapter 1 - The DNS protocol](/chapter1.md)
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* [Chapter 2 - Building a stub resolver](/chapter2.md)
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* [Chapter 3 - Adding more Record Types](/chapter3.md)
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* [Chapter 4 - Baby's first DNS server](/chapter4.md)
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* [Chapter 5 - Recursive Resolve](/chapter5.md)
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