HTTP Compression profile (object)¶
HTTP Compression profile with configurable options
Properties (* = required):
| name | type(s) | default | allowed values | description |
|---|---|---|---|---|
| allowHTTP10 | boolean | false | true, false | Specifies whether to forward HTTP 1.0 requests/responses (default false) |
| bufferSize | integer | 4096 | 256 - 4294967295 | Maximum number of response octets to buffer before deciding whether to apply compression (default 4096) |
| class* | string | “HTTP_Compress” | ||
| contentTypeExcludes | array | List of response Content-Type values which BIG-IP AS3 should not compress. Values are regular expressions that match Content-Type strings | ||
| contentTypeIncludes | array | “text/” | List of response Content-Type values which BIG-IP AS3 should compress. Values are regular expressions that match Content-Type strings | |
| cpuSaver | boolean | true | true, false | If true (default), system will reduce compression rate when CPU utilization exceeds cpuSaverHigh threshold and increase it when CPU utilization falls below cpuSaverLow threshold |
| cpuSaverHigh | integer | 90 | 15 - 99 | CPU utilization percentage (default 90) above which BIG-IP AS3 should moderate compression |
| cpuSaverLow | integer | 75 | 10 - 95 | CPU utilization percentage (default 75) below which the system returns compression to normal |
| gzipLevel | integer | 1 | 1 - 9 | Compression level (default 1); higher values produce greater compression but use more CPU cycles |
| gzipMemory | integer | 8 | 1 - 256 | Compression memory allocation in kilobytes (default 8), should be a power of two |
| gzipWindowSize | integer | 16 | 1 - 128 | Compression window size in kilobytes (default 16), should be a power of two |
| keepAcceptEncoding | boolean | false | true, false | Specifies that the system does not remove the Accept-Encoding header from an HTTP request (default false) |
| label | string | “^[^x00-x1fx22#&*<>?x5b-x5d`x7f]*$” | Optional friendly name for this object. Allows 0-64 chars, excluding a few likely to cause trouble with string searching, JS, TCL, or HTML | |
| minimumSize | integer | 1024 | 128 - 131072 | BIG-IP AS3 will not compress responses of fewer octets than this (default 1024) |
| preferMethod | string | “gzip” | “gzip”, “deflate” | Select preferred compression method (default gzip, strongly recommended) |
| remark | string | “^[^x00-x1fx22x5cx7f]*$” | Arbitrary (brief) text pertaining to this object. Allows 0-64 chars, excluding only control characters, double-quote, and backslash. This is permissive enough that you should worry about XSS attacks | |
| selective | boolean | false | true, false | If true, BIG-IP AS3 will only compress a response when an iRule attached to the virtual server requests it (default is false, meaning BIG-IP AS3 will compress responses which meet the criteria in this profile) |
| uriExcludes | array | List of request URI’s for which BIG-IP AS3 should not compress responses. Values are regular expressions that match request URI strings | ||
| uriIncludes | array | List of request URI’s for which BIG-IP AS3 should compress responses. Values are regular expressions that match URI strings | ||
| varyHeader | boolean | true | true, false | If true (default), a Vary header will appear in compressed responses |