compression.maxExpansionRatio

Limits the cumulative decompressed-to-compressed byte ratio accepted for a stream.

This parameter applies to imtcp: TCP Syslog Input Module.

Name:

compression.maxExpansionRatio

Scope:

input/module

Type:

integer

Default:

input=1024

Required?:

no

Introduced:

8.2606.0

Description

compression.maxExpansionRatio limits how much decompressed output imtcp accepts relative to compressed bytes received across the compressed stream when compression.mode="stream:always" is enabled. The default allows up to 1024 decompressed bytes per compressed byte.

If the ratio is exceeded, imtcp logs the compressed stream as invalid and closes the session. This bounds decompression amplification from malformed or unexpectedly dense compressed streams. Set the value to 0 to disable this ratio limit for tightly controlled deployments.

Input usage

input(
    type="imtcp"
    port="514"
    compression.mode="stream:always"
    compression.maxExpansionRatio="2048"
)

See also

See also compression.mode, compression.maxDecompressedBytesPerReceive, and imtcp: TCP Syslog Input Module.

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