# This file is part of Ghostream
# Copyright (C) 2020 by Crans <roots@crans.org>
# SPDX-License-Identifier: GPL-2.0-or-later

# Automatic Connection header for WebSocket support
# See http://nginx.org/en/docs/http/websocket.html
map $http_upgrade $connection_upgrade {
    default upgrade;
    ''      close;
}

# Redirect HTTP to HTTPS
server {
    listen 80;
    listen [::]:80;

    server_name stream.crans.org;

    location / {
        return 301 https://$host$request_uri;
    }
}

# HTTPS server
server {
    listen 443 ssl http2;
    listen [::]:443 ssl http2;

    server_name stream.crans.org;

    # SSL configuration based on https://ssl-config.mozilla.org/
    ssl_certificate /etc/letsencrypt/live/stream.crans.org/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/stream.crans.org/privkey.pem;
    ssl_session_timeout 1d;
    ssl_session_cache shared:MozSSL:10m;
    ssl_session_tickets off;

    # curl https://ssl-config.mozilla.org/ffdhe2048.txt > /etc/letsencrypt/dhparam
    ssl_dhparam /etc/letsencrypt/dhparam;

    ssl_protocols TLSv1.2 TLSv1.3;
    ssl_ciphers ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384;
    ssl_prefer_server_ciphers off;

    # HSTS (ngx_http_headers_module is required) (63072000 seconds)
    add_header Strict-Transport-Security "max-age=63072000" always;

    # Log into separate log files
    access_log      /var/log/nginx/ghostream.log;
    error_log       /var/log/nginx/ghostream_error.log;

    # Pass HTTP to Flask web server
    location / {
        proxy_pass http://127.0.0.1:8080;
        proxy_redirect off;
    }

    # Pass WebSocket to OvenMediaEngine for WebRTC signalling
    location /app/ {
        proxy_pass http://127.0.0.1:3333;
        proxy_redirect off;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection $connection_upgrade;
    }
}