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Build your own DNS server

Learn about the DNS protocol, DNS record types and more.

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dns-server
C
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JavaScript
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Go
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Python
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TypeScript

DNS is a protocol used to resolve domain names to IP addresses. In this challenge, you'll build a DNS server that's capable of responding to basic DNS queries.

Along the way you'll learn about the DNS protocol, DNS packet format, DNS record types, UDP servers and more.

Stages

Setup UDP server
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Write header section
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Write question section
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Write answer section
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Parse header section
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Parse question section
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Parse compressed packet
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Forwarding Server
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