server {
    # touch /etc/nginx/include/mattermost.phares.duckdns.org
    # openssl req -x509 -nodes -days 365 -newkey rsa:2048 -keyout /etc/nginx/include/mattermost.phares.duckdns.org.key -out /etc/nginx/include/mattermost.phares.duckdns.org.crt -config /etc/nginx/include/mattermost.phares.duckdns.org
    ssl_certificate /home/podman/wild-phares/fullchain.cer;
    # ssl_certificate /home/podman/wild-phares/phares.duckdns.org.cer;
    ssl_certificate_key /home/podman/wild-phares/phares.duckdns.org.key;
    ssl_protocols TLSv1.2 TLSv1.3;
    listen 443 ssl http2;
    server_name mattermost.phares.duckdns.org;
    # add_header X-Early-Data $tls1_3_early_data;
    location / {
        # https://mattermost.m1k1o.net/#/getting-started/reverse-proxy
        client_max_body_size 100M;
        proxy_set_header Connection "";
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
        proxy_set_header X-Frame-Options SAMEORIGIN;
        proxy_buffers 256 16k;
        proxy_buffer_size 16k;
        proxy_read_timeout 600s;
        proxy_http_version 1.1;
        proxy_pass https://192.168.11.2:8443/;
    }
    location ~ /api/v[0-9]+/(users/)?websocket$ {
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
        client_max_body_size 50M;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
        proxy_set_header X-Frame-Options SAMEORIGIN;
        proxy_buffers 256 16k;
        proxy_buffer_size 16k;
        client_body_timeout 60s;
        send_timeout 300s;
        lingering_timeout 5s;
        proxy_connect_timeout 90s;
        proxy_send_timeout 300s;
        proxy_read_timeout 90s;
        proxy_http_version 1.1;
        proxy_pass https://192.168.11.2:8443;
    }
}