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dns.resolveTxt() with multiple strings #52053
Description
Activity
tried to investigate by myself:
this behavior is produced by ares_parse_txt_reply_ext function from cares library
Version 1.20.1 (8 Oct 2023) - this version of cares works well
Version 1.27.0 (22 Feb 2024) - this does not work as expectedgoing to dig deeper and possible report my finding to c-ares project
So from the issue you opened in c-ares it sounds like they confirm that there was indeed what can be considered a breaking change.
So probably the c-ares update was not a patch, but a semver major?
Yes, exactly!
Now the branches 18, 20, 21 are affected, tested on v18.20.1, v20.12.1, v21.7.2
the current status:
-
the bug has been fixed in cares library v1.32
ares_parse_txt_reply_ext does not parse multiple TXT values after 1.20.1 version c-ares/c-ares#738
DNS RR TXT strings should not be automatically concatenated c-ares/c-ares#801 -
cares library updated to v1.32 in the "main" branch of node
deps: update c-ares to v1.32.0 #53722 -
tested this issue with the node build from "main" branch - FIXED
-
Is this is resolved on the main branch, this issue can be closed.
node v20.17.0, v22.5.0 - fixed
affected node versions by this issue:
18: v18.20.0 - v18.20.8
20: v20.12.0 - v20.16.0
21: v21.7.0 - v21.7.3
22: v22.0.0 - v22.4.1
Version
21.7.0
Platform
Linux server 4.18.0-477.27.1.el8_8.x86_64 #1 SMP Thu Aug 31 10:29:22 EDT 2023 x86_64 x86_64 x86_64 GNU/Linux
Subsystem
dns
What steps will reproduce the bug?
dns records in somedomain
test IN TXT 0 string0test IN TXT 1 string1the code
import dns from "node:dns/promises"let t = await dns.resolveTxt("test.somedomain")console.dir(t)How often does it reproduce? Is there a required condition?
always
What is the expected behavior? Why is that the expected behavior?
node versions before 21.7.0 return
[ [ '0', 'string0' ], [ '1', 'string1' ] ]suppose this is the expected behavior
What do you see instead?
versions 21.7.0 and 21.7.1 return
[ [ '0string0' ], [ '1string1' ] ]looks wrong
Additional information
No response