Added docs about the video streaming example and removed content_type parameter from XMixedReplaceResponse

Author: michalpokusa

docs/examples.rst

@@ -352,6 +352,23 @@ This might change in the future, but for now, it is recommended to use Websocket
     :emphasize-lines: 12,20,65-72,88,99
     :linenos:
 
+Custom response types e.g. video streaming
+------------------------------------------
+
+The built-in response types may not always meet your specific requirements. In such cases, you can define custom response types and implement
+the necessary logic.
+
+The example below demonstrates a ``XMixedReplaceResponse`` class, which uses the ``multipart/x-mixed-replace`` content type to stream video frames
+from a camera, similar to a CCTV system.
+
+To ensure the server remains responsive, a global list of open connections is maintained. By running tasks asynchronously, the server can stream
+video to multiple clients while simultaneously handling other requests.
+
+.. literalinclude:: ../examples/httpserver_video_stream.py
+    :caption: examples/httpserver_video_stream.py
+    :emphasize-lines: 31-77,92
+    :linenos:
+
 Multiple servers
 ----------------
 

examples/httpserver_video_stream.py

@@ -37,14 +37,12 @@ def __init__(
         status: Union[Status, Tuple[int, str]] = OK_200,
         headers: Union[Headers, Dict[str, str]] = None,
         cookies: Dict[str, str] = None,
-        content_type: str = None,
     ) -> None:
         super().__init__(
             request=request,
             headers=headers,
             cookies=cookies,
             status=status,
-            content_type=content_type,
         )
         self._boundary = self._get_random_boundary()
         self._headers.setdefault(