cors local nginx

nginx.conf

worker_processes  1;

events {
    worker_connections  1024;
}

http {
    sendfile        on;
    keepalive_timeout  65;
    gzip  on;
    server_names_hash_bucket_size  64;
    map $http_upgrade $connection_upgrade {
        default Upgrade;
        ''      close;
    }

    server {
      listen       80;
      server_name  xxx.com; # set xxx.com dns to localhost in /etc/hosts and run this nginx

      access_log path/to/access.log;
      error_log path/to/error.log;

      location / {
          proxy_pass http://localhost:8080; # start front end dev server and open browser to xxx.com

          proxy_read_timeout 120;
          proxy_set_header Host $http_host;
          proxy_set_header Remote-Addr $http_remote_addr;
          proxy_set_header X-Real-IP $remote_addr;

          # to support hot-reload
          proxy_http_version 1.1;
          proxy_set_header Upgrade $http_upgrade;
          proxy_set_header Connection "Upgrade";
      }

      location /api/ {
          proxy_pass http://realbackend; # proxy to real backend server
          proxy_read_timeout 120;
          proxy_set_header Host $http_host;
          proxy_set_header Remote-Addr $http_remote_addr;
          proxy_set_header X-Real-IP $remote_addr;
      }
  }
}