location = /slskd {     
        return 301 https://$host/slskd/;
}

location /slskd/ {
        proxy_pass http://127.0.0.1:5030/;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "Upgrade";
        proxy_set_header Host $host;
        proxy_request_buffering off;
        client_max_body_size 0;
}