I’m stuck on state 7 on dns-server problem. I am getting this error when running the test and I am wondering what this means. [stage-7] DNS query failed: dns: overflowing header size. [stage-7] If you are seeing this after a while then it is likely that your server is not responding with appropri…

I was able to debug and find out what the issue was. Looks like I was setting RDATA (answer) length incorrectly. I was using *.len() blindly and it when converted to [u8] takes more than 2 bytes of memory. The fix was to use correct data type and make sure length is encoded with correct number of …

Ah, we’re due an update to the parser here (similar to Improvements to error messages on the HTTP server challenge ). These errors can be super tricky to debug unfortunately, and without that new parser it’s going to be really difficult for us to help figure out what’s wrong. I’ll treat this as an i…

DNS query failed: dns: overflowing header size (#YC9)

Challenges

system June 4, 2024, 2:25am 6

Note: I’ve updated the title of this post to include the stage ID (#YC9). You can learn about the stages rename here: Upcoming change: Stages overhaul.

Topic		Replies	Views
[DNS Server] #YC9 Overflowing header size Challenges challenge:dns-server	2	86	December 4, 2025
#YC9 dns: bad rdata Challenges challenge:dns-server	2	147	December 15, 2024
DNS query failed: dns: overflow unpacking uint32 Challenges challenge:dns-server	3	149	April 11, 2025
Need help with stage 9 DNS (parsing compressed questions) Challenges challenge:dns-server	6	154	November 24, 2024
Stage #YC9 of “Build your own DNS” Challenges challenge:dns-server	2	339	June 4, 2024

DNS query failed: dns: overflowing header size (#YC9)

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