upstream app_cluster {
  server leader:8065 fail_timeout=10s max_fails=10;
  server follower:8065 fail_timeout=10s max_fails=10;
  server follower2:8065 fail_timeout=10s max_fails=10;
}

server {
  listen 8065;

  location ~ /api/v[0-9]+/(users/)?websocket$ {
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection "upgrade";
    proxy_http_version 1.1;
    client_max_body_size 50M;
    proxy_set_header Host $http_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-Frame-Options SAMEORIGIN;
    proxy_buffers 256 16k;
    proxy_buffer_size 16k;
    proxy_read_timeout 600s;
    proxy_pass http://app_cluster;
  }

  location / {
    client_max_body_size 100M;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection "upgrade";
	proxy_http_version 1.1;
    proxy_set_header Host $http_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-Frame-Options SAMEORIGIN;
    proxy_pass http://app_cluster;
  }
}