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zlib incorrect data check error #48017
Description
Version
v16.16.0
Platform
Microsoft Windows NT 10.0.22621.0 x64
Subsystem
No response
What steps will reproduce the bug?
When a particular buffer zipped over the variable itself. Data becomes corrupted. Possible to occur up to version 20. Need checking
If it is zipped to a new variable , everything works as expected
buffer.json = 'https://www.dropbox.com/s/g7jh19o0cmn9kp3/buffer.json?dl=0';
let buffer = Buffer.from(buffer.json) //Pseudo code here. Parse it however you like
buffer = zlib.gzipSync(buffer);
zlib.unzipSync(buffer) //Error: incorrect data checkHow often does it reproduce? Is there a required condition?
Always. Consistent
What is the expected behavior? Why is that the expected behavior?
Expect to unzip without error
What do you see instead?
Error: incorrect data check
Additional information
Need to check newer versions of node and zlib.
Activity
jimmywarting commentedon May 15, 2023
Related: nodejs/undici#2123?
MuhammedKalkan commentedon May 15, 2023
Maybe i should add , if it is zipped to a new variable , everything works as expected
jimmywarting commentedon May 15, 2023
try with this option:
MuhammedKalkan commentedon May 15, 2023
I want to read whole data by the way. Documentation says only part could be read with that options?
I use it to de/compress an important data.
jimmywarting commentedon May 15, 2023
using this will only say that you ignore the integrity checks at the end of the stream / buffer to make sure that the data you got out was the expected end result
MuhammedKalkan commentedon May 16, 2023
Tried but no luck. Strange part is , i have zipped twice totally same data. . However one of them fails to unzip and other one succeeds. When inspected byte by byte as a buffer errored one writes a byte value as 210 instead 218 in the middle of the buffer (11040 or so of total 24000 bytes)
Just try this file : https://www.dropbox.com/s/p1zvp64x5kjell1/test?dl=0
MuhammedKalkan commentedon May 17, 2023
Closing this one, might be os or memory error