The Netty Routing Filter
The Netty routing filter runs if the URL located in the ServerWebExchangeUtils.GATEWAY_REQUEST_URL_ATTR
exchange attribute has a http
or https
scheme.
It uses the Netty HttpClient
to make the downstream proxy request.
The response is put in the ServerWebExchangeUtils.CLIENT_RESPONSE_ATTR
exchange attribute for use in a later filter.
(There is also an experimental WebClientHttpRoutingFilter
that performs the same function but does not require Netty.)