Chrome on HTTP/2 with websockets over http/1?

Question

Nginx

Hello. There is an nginx config on lets encrypt ssl, http2 and a websocket server along the /socketcluster path, where http1 is forced using the proxy_http_version 1.1;. Actually, in firefox everything works as expected - all requests are http/2, connection to web sockets is http/1. Chrome doesn't like this.

WebSocket connection to 'wss://domain/socketcluster' failed: Error in connection establishment: net::ERR_NOT_IMPLEMENTED

How to solve this problem? We will not get http/2 for sockets soon, since neither chrome nor socketcluster supports it, and chrome breaks through it, although it was said through http 1.1.
Thanks in advance.