Rewrite nginx url - nginx

Question

I am facing problem with rewriting url in nginx.
The issue is if the url contains domain/.well-known/acme-challenge/ it should be replaced by domain/folder/.well-known/acme-challenge.
How can I rewrite nginx for this so that it points to proper location.
The request for the nginx configuration works with this url:
domain/folder/.well-known/acme-challenge
but I want it to redirect when it finds something like
domain/.well-known/acme-challenge/
Here is my nginx conf:-
#upstream jboss {
# server domain:8080;
#}
server {
listen ip:80;
server_name domain;
access_log /var/log/nginx/domian_access.log;
error_log /var/log/nginx/domain_error.log warn;
# location ~* .(jpg|jpeg|png|gif|ico|css|js)$ {
# expires 365d;
#}
location /folder/ {
# ModSecurityEnabled on;
# ModSecurityConfig modsecurity.conf;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $scheme;
# proxy_set_header X-Forwarded-Host $host;
# proxy_set_header X-Forwarded-Server $host;
proxy_pass http://ip:8080/folder/;
proxy_connect_timeout 6000;
proxy_send_timeout 6000;
proxy_read_timeout 6000;
send_timeout 6000;
index Main.jsp index.html;
}
#index index.html ;
# try_files $uri $uri/ =404;
#error_page 500 502 503 504 /50x.html;
#location = /50x.html {
# root html;
#}

Answer 1

I don't think you need to rewrite the url, but to send the url to the correct folder.
.well-known/acme-challenge is known to be a challenge for ssl certificates that are made automatically (lets'encrypt), so simply set the alias to the folder where your bot writes the "challenge" and you are good to go.
location /.well-known/acme-challenge {
auth_basic off;
alias /directory/to/challenge;
default_type text/plain;
}
That way it will "accept" and respond the challenge correctly
Even if you keep wanting to rewrite it, set a redirec to to domain/folder/$request_uri line:
location /.well-known/acme-challenge {
return 301 http://$host/folder/$request_uri;
}