Last Modified: Nov 07, 2022
Known Affected Versions:
12.1.0, 12.1.0 HF1, 12.1.0 HF2, 12.1.1, 12.1.1 HF1, 12.1.1 HF2
Opened: Jun 30, 2016 Severity: 3-Major
Current driver supports only compress GZip and compress deflate.
Current compression hardware (such as Coleto Creek) is needed to support ZLIB method, otherwise compression in APM Network Access tunnel does not scale.
APM Network Access tunnel has an option for compression. Compression is implemented in GZIP hudfilter which uses COMPRESS_ZLIB compression method. Currently only 'zlib' compression provider (software based) is implementing this method. None of the hardware providers (such as Coleto Creek) support it; they support COMPRESS_DEFLATE and COMPRESS_GZIP. GZIP hudfilter could use all 3 methods, but only ZLIB is compatible with current and older versions of the client. To preserve backward compatibility it must use ZLIB.
zLib compression is now supported.