wss websocket over nginx

Question

Could someone help me? I have java app with websocket server. It works by ws. I need to add ssl in nginx. I added two config: one for proxy by ws and another for wss

        server {

            listen 15459;


            location / {

                    proxy_pass http://localhost:15259;
                    proxy_redirect off;
                    proxy_pass_request_headers on;

                    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_http_version 1.1;
                    proxy_set_header Upgrade $http_upgrade;
                    proxy_set_header Connection Upgrade;
            }

    }

    server {
            listen 15359 ssl;

            ssl_certificate /etc/ssl/certs/topaz_wss.crt;
            ssl_certificate_key /etc/ssl/private/topaz_wss.key;

            ssl_protocols       TLSv1.1 TLSv1.2;
            ssl_session_timeout 5m;


            location / {

                    proxy_pass http://localhost:15259;
                    proxy_redirect off;
                    proxy_pass_request_headers on;

                    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_http_version 1.1;
                    proxy_set_header Upgrade $http_upgrade;
                    proxy_set_header Connection Upgrade;
            }

    }

So, If I connect by ws to 15359 , everything is ok. But, when I connect to 15459 by wss, it dose not work. Where am I wrong?