[#3461] removed content-type charset and deprecated keep-alive header field

CHANGELOG.md

@@ -18,6 +18,9 @@
   - Speed up the listing loading times for records with large `editor` field values by initially fetching only a partial of the records data (the complete record data is loaded on record preview/update).
   - Added "Media library" (collection images picker) support for the TinyMCE `editor` field.
 
+- Removed the explicit charset from the realtime response due to compatability issues with IIS ([#3461](https://github.com/pocketbase/pocketbase/issues/3461)).
+  _The `Connection:keep-alive` realtime response header was also removed as it is not really used with HTTP2 anyway._
+
 
 ## v0.18.9
 

apis/realtime.go

@@ -56,9 +56,8 @@ func (api *realtimeApi) connect(c echo.Context) error {
 		api.app.SubscriptionsBroker().Unregister(client.Id())
 	}()
 
-	c.Response().Header().Set("Content-Type", "text/event-stream; charset=UTF-8")
+	c.Response().Header().Set("Content-Type", "text/event-stream")
 	c.Response().Header().Set("Cache-Control", "no-store")
-	c.Response().Header().Set("Connection", "keep-alive")
 	// https://github.com/pocketbase/pocketbase/discussions/480#discussioncomment-3657640
 	// https://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_buffering
 	c.Response().Header().Set("X-Accel-Buffering", "no")