upstream proxy102 {
server localhost:9999;
}

server {
listen 3478 ssl http2 default_server;
server_name xxx.yyy.com;
ssl_certificate /etc/nginx/keys/xxx.pem;
ssl_certificate_key /etc/nginx/keys/xxx.key;

location /wss {
proxy_pass http://proxy102; #代理到上面的地址去
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "Upgrade";
proxy_read_timeout 86400;
proxy_send_timeout 86400;
}
}