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Build your own DNS server

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

 
Start Building
dns-server dns-server dns-server
Build your own DNS server
This challenge is free to try when it's in beta. We keep challenges
in beta for a few weeks to gather feedback.

In this challenge, you'll build a DNS server that's capable of
responding to basic DNS queries. Along the way we'll learn about the
DNS protocol, DNS packet format, forwarding servers, A record types,
UDP and more.

Stages

Setup UDP server
Very easy
We'd expect a proficient developer to take < 5 minutes to complete
this stage.

In this stage, we'll start a UDP server on port 2053.

Very easy
We'd expect a proficient developer to take < 5 minutes to complete
this stage.
Write header section
Medium
We'd expect a proficient developer to take 30 minutes to 1 hour to
complete this stage.

In this stage, we'll write a DNS packet's header contents

Medium
We'd expect a proficient developer to take 30 minutes to 1 hour to
complete this stage.
show all...
" There are few sites I like as much that have a step by step guide.
The real-time feedback is so good, it's creepy! avatar Ananthalakshmi
Sankar Automation Engineer at Apple " I think the instant feedback
right there in the git push is really cool. Didn't even know that was
possible! avatar Patrick Burris Senior Software Developer,
CenturyLink
RECENT ATTEMPTS 0
 
                              
      
 
                              
      
 
                              
      
 
                              
      
 
                              
      
 
                              
      
 
                              
      
 
                              
      
 
                              
      
 
                              
      
 
                              
      
 
                              
      

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