add proxy_request_buffering off

proxy-params.conf

@@ -2,6 +2,7 @@ proxy_http_version 1.1;
 proxy_set_header Upgrade $http_upgrade;
 proxy_set_header Connection "upgrade";
 proxy_buffering off;
+proxy_request_buffering off;
 client_max_body_size 0;
 proxy_connect_timeout  3600s;
 proxy_read_timeout  3600s;