Encoding

This middleware provides support for response encoding using gzip compression.
It compresses the HTTP response body if the client indicates support for gzip encoding via the Accept-Encoding header.

mencoding "github.com/rakunlabs/ada/middleware/encoding"

Add middleware to directly mux, group or handler:

mencoding.Middleware()

Configuration

You can configure the middleware using mencoding.Option functions.

mencoding.Middleware(
    mencoding.WithConfig(mencoding.Config{
        Disabled: false,
        Encoding: []string{"gzip"}, // Supported encodings
    }),
)

Only gzip is implemented. Encoding names are trimmed and matched case-insensitively at construction. Empty, duplicate, or unsupported configured values panic, including when Disabled is true, so configuration errors cannot remain hidden until the middleware is enabled.

The middleware follows RFC 9110 quality values and gives an explicit coding preference precedence over *. Malformed q-values are conservatively treated as q=0; identity remains acceptable unless explicitly disabled by identity;q=0 or by *;q=0 without a more specific identity value. Duplicate coding entries use the lowest stated quality.

Eligible responses are compressed as they stream, regardless of body size. No minimum-size buffer is used because buffering would change streaming behavior. If gzip overhead matters for tiny bodies, scope the middleware to routes that produce responses worth compressing.