how can i get the target node response body from upstream?

[Git4Future]

i want to replace the response body from target server in upstream .
just like string.gsub in lua.
but i can't get the response body, ngx.arg[1] seems retun nil value.
however, if using redirect plugin,i can only get 301 response html,not the upstream server's response

[juzhiyuan]

I only find the response-rewrite plugin[1], and it only supports returning a fixed value. If you need more powerful feature to replace by target text or regex, you may need to submit a PR to implement it 🤔 @tzssangglass right?

[1] https://apisix.apache.org/docs/apisix/next/plugins/response-rewrite/

[tzssangglass]

yes, releated to: #5451

[Git4Future]

thks a lot