gistfile1.txt

map $arg_url $u_scheme {
	~^https https;
	default http;
}

map $arg_url $u_host {
	~^https?%3a%2f%2f(.*?)%2f.*$ "$1";
}

map $arg_url $u_uri {
	~^https?%3a%2f%2f(.*?)%2f(.*)$ "$2";
}

resolver 8.8.8.8 ipv6=off;

server {
	listen 80;
	server_name test.test;

	location /proxy/ {
		proxy_pass "${u_scheme}://${u_host}/${u_uri}";
	}
}