How to redirect a directory to an identical subdomain directory while keeping post parameters and http request headers?

Question

Nginx

Hello.
There is a directory with request processing controllers /api/controllers/v1/*.php on the main domain.
How to make a redirect to a subdomain with exactly the same directory in nginx or htaccess while preserving the transmitted http headers and POST parameters?

Answer 1

location /api/controllers/v1 {
    rewrite ^/api/controllers/v1(.*)$ https://sub.domain.com/$1 redirect;
}

Answer 2

It's just a redirect. Standard 301/302 will change the request to GET. There are 307/308, but they only guarantee to keep the POST and the request body, not the headers.
Perhaps you need a reverse proxy:
https://nginx.org/ru/docs/http/ngx_http_proxy_modu...
https://httpd.apache.org/docs/2.4/mod/mod_proxy.ht...