snappy.DecompressionOptions

DecompressionOptions controls safety limits and validation behavior during decompression.

pub const DecompressionOptions = struct {
    /// Maximum allowed uncompressed output size (0 = no limit).
    /// Used to defend against decompression bombs.
    maxOutputSize: usize = 0,
    /// Whether to verify masked CRC-32C checksums in framed streams.
    verifyChecksums: bool = true,
};

---

Fields

maxOutputSize

• Type: usize
• Default: 0 (unlimited)
• Description: Maximum allowable uncompressed output size in bytes. If decompression would produce more bytes than this limit, the decoder safely aborts with error.ResourceLimitExceeded, preventing untrusted payload decompression bomb attacks.

verifyChecksums

• Type: bool
• Default: true
• Description: When true, every compressed (0x00) and uncompressed (0x01) chunk in a framed stream has its uncompressed payload verified against the 4-byte masked CRC-32C checksum embedded in the chunk header. If a discrepancy is detected, decompression fails immediately with error.ChecksumMismatch.