修改请求的Cookie信息。如下：
proxy_set_header Cookie “$http_cookie; XDEBUG_SESSION=PHPSTROM”;

server {
     listen 80;  #from https port to http port .
     location / {
         proxy_pass   http://127.0.0.1:8080/;
         proxy_set_header Cookie "$http_cookie; XDEBUG_SESSION=PHPSTROM";
         proxy_set_header Host $host;
     }
}

server {
    listen 8080;
    location ~ \.php$ {     
        fastcgi_pass   127.0.0.1:9090;
        fastcgi_index  index.php;
        fastcgi_param  SCRIPT_FILENAME  $document_root$fastcgi_script_name;
        include        fastcgi_params;
    }

}