Create upstream response body in LUA when it is NIL #14226
Description
The LUA filter documentation states that you can override the upstream response body by doing this :
function envoy_on_response(response_handle)
local content_length = response_handle:body():setBytes("<html><b>Not Found<b></html>")
response_handle:headers():replace("content-length", content_length)
response_handle:headers():replace("content-type", "text/html")
end
However, in some cases, the upstream response has no body, thus making it impossible to change its content.
Is there a workaround for this ? If not, that could be an interesting feature.