Conditionnal compression based on Content-Type

docs/content/middlewares/compress.md

@@ -63,3 +63,59 @@ http:
     * The response body is larger than `1400` bytes.
     * The `Accept-Encoding` request header contains `gzip`.
     * The response is not already compressed, i.e. the `Content-Encoding` response header is not already set.
+
+## Configuration Options
+
+### `excludedContentTypes`
+
+`excludedContentTypes` specifies a list of content types to compare the `Content-Type` header of the incoming requests to before compressing.
+
+The requests with content types defined in `excludedContentTypes` are not compressed.
+
+Content types are compared in a case-insensitive, whitespace-ignored manner.
+
+```yaml tab="Docker"
+labels:
+  - "traefik.http.middlewares.test-compress.compress.excludedcontenttypes=text/event-stream"
+```
+
+```yaml tab="Kubernetes"
+apiVersion: traefik.containo.us/v1alpha1
+kind: Middleware
+metadata:
+  name: test-compress
+spec:
+  compress:
+    excludedContentTypes:
+      - text/event-stream
+```
+
+```yaml tab="Consul Catalog"
+- "traefik.http.middlewares.test-compress.compress.excludedcontenttypes=text/event-stream"
+```
+
+```json tab="Marathon"
+"labels": {
+  "traefik.http.middlewares.test-compress.compress.excludedcontenttypes": "text/event-stream"
+}
+```
+
+```yaml tab="Rancher"
+labels:
+  - "traefik.http.middlewares.test-compress.compress.excludedcontenttypes=text/event-stream"
+```
+
+```toml tab="File (TOML)"
+[http.middlewares]
+  [http.middlewares.test-compress.compress]
+    excludedContentTypes = ["text/event-stream"]
+```
+
+```yaml tab="File (YAML)"
+http:
+  middlewares:
+    test-compress:
+      compress:
+        excludedContentTypes:
+          - text/event-stream
+```