brotli

Description

The brotli Plugin dynamically sets the behavior of brotli in Nginx.

Prerequisites

This Plugin requires brotli shared libraries.

The example commands to build and install brotli shared libraries:

wget https://github.com/google/brotli/archive/refs/tags/v1.1.0.zip
unzip v1.1.0.zip
cd brotli-1.1.0 && mkdir build && cd build
cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=/usr/local/brotli ..
sudo cmake --build . --config Release --target install
sudo sh -c "echo /usr/local/brotli/lib >> /etc/ld.so.conf.d/brotli.conf"
sudo ldconfig

caution

If the upstream is returning a compressed response, then the Brotli plugin won’t be able to compress it.

Attributes

Name	Type	Required	Default	Valid values	Description
types	array[string] or ““	False	[“text/html”]		Dynamically sets the `brotli_types` directive. Special value `““` matches any MIME type.
min_length	integer	False	20	>= 1	Dynamically sets the `brotli_min_length` directive.
comp_level	integer	False	6	[0, 11]	Dynamically sets the `brotli_comp_level` directive.
mode	integer	False	0	[0, 2]	Dynamically sets the `brotli decompress mode`, more info in RFC 7932.
lgwin	integer	False	19	[0, 10-24]	Dynamically sets the `brotli sliding window size`, `lgwin` is Base 2 logarithm of the sliding window size, set to `0` lets compressor decide over the optimal value, more info in RFC 7932.
lgblock	integer	False	0	[0, 16-24]	Dynamically sets the `brotli input block size`, `lgblock` is Base 2 logarithm of the maximum input block size, set to `0` lets compressor decide over the optimal value, more info in RFC 7932.
http_version	number	False	1.1	1.1, 1.0	Like the `gzip_http_version` directive, sets the minimum HTTP version of a request required to compress a response.
vary	boolean	False	false		Like the `gzip_vary` directive, enables or disables inserting the “Vary: Accept-Encoding” response header field.

Enable Plugin

The example below enables the brotli Plugin on the specified Route:

note

You can fetch the admin_key from config.yaml and save to an environment variable with the following command:

admin_key=$(yq '.deployment.admin.admin_key[0].key' conf/config.yaml | sed 's/"//g')

curl -i http://127.0.0.1:9180/apisix/admin/routes/1  -H "X-API-KEY: $admin_key" -X PUT -d '
{
    "uri": "/",
    "plugins": {
        "brotli": {
        }
    },
    "upstream": {
        "type": "roundrobin",
        "nodes": {
            "httpbin.org": 1
        }
    }
}'

Example usage

Once you have configured the Plugin as shown above, you can make a request as shown below:

curl http://127.0.0.1:9080/ -i -H "Accept-Encoding: br"

HTTP/1.1 200 OK
Content-Type: text/html; charset=utf-8
Transfer-Encoding: chunked
Connection: keep-alive
Date: Tue, 05 Dec 2023 03:06:49 GMT
Access-Control-Allow-Origin: *
Access-Control-Allow-Credentials: true
Server: APISIX/3.6.0
Content-Encoding: br
Warning: Binary output can mess up your terminal. Use "--output -" to tell
Warning: curl to output it to your terminal anyway, or consider "--output
Warning: <FILE>" to save to a file.

Delete Plugin

To remove the brotli Plugin, you can delete the corresponding JSON configuration from the Plugin configuration. APISIX will automatically reload and you do not have to restart for this to take effect.

curl http://127.0.0.1:9180/apisix/admin/routes/1  -H "X-API-KEY: $admin_key" -X PUT -d '
{
    "uri": "/",
    "upstream": {
        "type": "roundrobin",
        "nodes": {
            "httpbin.org": 1
        }
    }
}'