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Diffstat (limited to 'doc/api/zlib.md')
| -rw-r--r-- | doc/api/zlib.md | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/doc/api/zlib.md b/doc/api/zlib.md index 96e6a0c87d..9fa9820f34 100644 --- a/doc/api/zlib.md +++ b/doc/api/zlib.md @@ -459,12 +459,11 @@ added: v0.5.8 Creates and returns a new [DeflateRaw][] object with the given [options][]. *Note*: An upgrade of zlib from 1.2.8 to 1.2.11 changed behavior when windowBits -is set to 8 for raw deflate streams. zlib does not have a working implementation -of an 8-bit Window for raw deflate streams and would automatically set windowBit -to 9 if initially set to 8. Newer versions of zlib will throw an exception. -This creates a potential DOS vector, and as such the behavior ahs been reverted -in Node.js 8, 6, and 4. Node.js version 9 and higher will throw when windowBits -is set to 8. +is set to 8 for raw deflate streams. zlib would automatically set windowBits +to 9 if was initially set to 8. Newer versions of zlib will throw an exception, +so Node.js restored the original behavior of upgrading a value of 8 to 9, +since passing `windowBits = 9` to zlib actually results in a compressed stream +that effectively uses an 8-bit window only. ## zlib.createGunzip([options]) <!-- YAML |