File Server
The file server filter can be used to respond with the contents of a file from the filesystem.
The content-length header will be the size of the file.
The content-type header will be set based on filename suffix and filter configuration.
Note
This filter is not yet supported on Windows.
Configuration
This filter should be configured with the type URL
type.googleapis.com/envoy.extensions.filters.http.file_server.v3.FileServerConfig.