# Compressor¶

This extension may be referenced by the qualified name envoy.filters.http.compressor

Note

This extension is intended to be robust against untrusted downstream traffic. It assumes that the upstream is trusted.

Compressor configuration overview.

## extensions.filters.http.compressor.v3.Compressor¶

[extensions.filters.http.compressor.v3.Compressor proto]

{
"content_length": "{...}",
"content_type": [],
"runtime_enabled": "{...}",
"compressor_library": "{...}",
"request_direction_config": "{...}",
"response_direction_config": "{...}"
}

content_length

(UInt32Value) Minimum response length, in bytes, which will trigger compression. The default value is 30.

content_type

(repeated string) Set of strings that allows specifying which mime-types yield compression; e.g., application/json, text/html, etc. When this field is not defined, compression will be applied to the following mime-types: “application/javascript”, “application/json”, “application/xhtml+xml”, “image/svg+xml”, “text/css”, “text/html”, “text/plain”, “text/xml” and their synonyms.

(bool) If true, disables compression when the response contains an etag header. When it is false, the filter will preserve weak etags and remove the ones that require strong validation.

(bool) If true, removes accept-encoding from the request headers before dispatching it to the upstream so that responses do not get compressed before reaching the filter.

Attention

To avoid interfering with other compression filters in the same chain use this option in the filter closest to the upstream.

runtime_enabled

(config.core.v3.RuntimeFeatureFlag) Runtime flag that controls whether the filter is enabled or not. If set to false, the filter will operate as a pass-through filter. If not specified, defaults to enabled.

compressor_library

(config.core.v3.TypedExtensionConfig) A compressor library to use for compression. Currently only envoy.compression.gzip.compressor is included in Envoy. This field is ignored if used in the context of the gzip http-filter, but is mandatory otherwise.

request_direction_config

(extensions.filters.http.compressor.v3.Compressor.RequestDirectionConfig) Configuration for request compression. Compression is disabled by default if left empty.

response_direction_config

(extensions.filters.http.compressor.v3.Compressor.ResponseDirectionConfig) Configuration for response compression. Compression is enabled by default if left empty.

Attention

If the field is not empty then the duplicate deprecated fields of the Compressor message, such as content_length, content_type, disable_on_etag_header, remove_accept_encoding_header and runtime_enabled, are ignored.

Also all the statistics related to response compression will be rooted in <stat_prefix>.compressor.<compressor_library.name>.<compressor_library_stat_prefix>.response.* instead of <stat_prefix>.compressor.<compressor_library.name>.<compressor_library_stat_prefix>.*.

## extensions.filters.http.compressor.v3.Compressor.CommonDirectionConfig¶

[extensions.filters.http.compressor.v3.Compressor.CommonDirectionConfig proto]

{
"enabled": "{...}",
"min_content_length": "{...}",
"content_type": []
}

enabled

(config.core.v3.RuntimeFeatureFlag) Runtime flag that controls whether compression is enabled or not for the direction this common config is put in. If set to false, the filter will operate as a pass-through filter in the chosen direction. If the field is omitted, the filter will be enabled.

min_content_length

(UInt32Value) Minimum value of Content-Length header of request or response messages (depending on the direction this common config is put in), in bytes, which will trigger compression. The default value is 30.

content_type

(repeated string) Set of strings that allows specifying which mime-types yield compression; e.g., application/json, text/html, etc. When this field is not defined, compression will be applied to the following mime-types: “application/javascript”, “application/json”, “application/xhtml+xml”, “image/svg+xml”, “text/css”, “text/html”, “text/plain”, “text/xml” and their synonyms.

## extensions.filters.http.compressor.v3.Compressor.RequestDirectionConfig¶

[extensions.filters.http.compressor.v3.Compressor.RequestDirectionConfig proto]

Configuration for filter behavior on the request direction.

{
"common_config": "{...}"
}

common_config

## extensions.filters.http.compressor.v3.Compressor.ResponseDirectionConfig¶

[extensions.filters.http.compressor.v3.Compressor.ResponseDirectionConfig proto]

Configuration for filter behavior on the response direction.

{
"common_config": "{...}",
}

common_config

(bool) If true, disables compression when the response contains an etag header. When it is false, the filter will preserve weak etags and remove the ones that require strong validation.

(bool) If true, removes accept-encoding from the request headers before dispatching it to the upstream so that responses do not get compressed before reaching the filter.

Attention

To avoid interfering with other compression filters in the same chain use this option in the filter closest to the upstream.