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securebit-chat/deploy/nginx.conf
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Add end-to-end encrypted voice messages; release v5.4.5
- Record voice notes in-browser, sent over the chunked AES-GCM file-transfer
  channel (per-file session key + signed SHA-256 integrity).
- Captured as PCM and encoded to WAV for universal playback (incl. iOS/Safari);
  auto-accepted and played inline from an in-memory blob, never written to disk.
- Composer mic button with live waveform + timer; desktop shows mic + send side
  by side, mobile swaps mic to send when typing.
- CSP media-src now allows blob: so recorded/received audio can play.
- Roadmap: Desktop Edition -> 5.0, new 5.5 'Secure Voice & Calls', later
  milestones shifted; version bumped to 5.4.5.
- Update README, docs (security/API/cryptography), and CHANGELOG.
2026-07-22 00:41:58 -04:00

108 lines
5.2 KiB
Nginx Configuration File

# nginx config for serving SecureBit.chat (static PWA) on Fly.io.
# Mirrors the behavior of the Apache .htaccess: correct JS MIME for ES modules
# (.jsx/.mjs), no-cache for the app shell / service worker / versioning files,
# long-immutable cache for hashed/static assets, security headers, SPA fallback.
worker_processes auto;
events { worker_connections 1024; }
http {
include /etc/nginx/mime.types;
default_type application/octet-stream;
# ES modules must be served as JavaScript. nginx's default mime.types maps
# .js but not .mjs/.jsx — declare them explicitly (this overrides .js too).
types {
application/javascript js mjs jsx;
text/css css;
application/json json map;
application/manifest+json webmanifest;
font/woff2 woff2;
font/woff woff;
image/svg+xml svg;
}
sendfile on;
tcp_nopush on;
server_tokens off;
gzip on;
gzip_vary on;
gzip_proxied any;
gzip_comp_level 6;
gzip_min_length 256;
gzip_types text/plain text/css text/javascript
application/javascript application/json application/manifest+json
application/ld+json application/wasm
image/svg+xml image/x-icon font/woff2;
# Decide Cache-Control from the request path. Keeping all add_header calls at
# one level avoids nginx's header-inheritance reset between blocks.
map $uri $sb_cache {
default "public, max-age=31536000, immutable";
~^/index\.html$ "no-cache, no-store, must-revalidate";
~^/$ "no-cache, no-store, must-revalidate";
~^/sw\.js$ "no-cache, no-store, must-revalidate";
~^/manifest\.json$ "no-cache, no-store, must-revalidate";
~^/meta\.json$ "no-cache, no-store, must-revalidate";
# dist/ bundles are query-versioned (?v=) in index.html. "no-cache" forces
# revalidation on every load, but dropping "no-store" lets the browser reuse
# the cached copy on a 304 — avoiding a full re-download of the large bundles
# (e.g. qr-local.js ~1.2MB) when nothing changed, while still picking up
# new releases immediately.
~^/dist/ "no-cache, must-revalidate";
}
# CDN-Cache-Control is read by Cloudflare (and other CDNs) *independently* of the
# browser Cache-Control above, and takes precedence at the edge. We force "no-store"
# for the app shell, service worker and version files so a CDN can never serve a
# stale meta.json / index.html / sw.js — which would silently break the in-app
# update notification. The empty default emits no header (nginx skips empty values),
# so immutable hashed assets keep being edge-cached normally for performance.
map $uri $sb_cdn_cache {
default "";
~^/index\.html$ "no-store";
~^/$ "no-store";
~^/sw\.js$ "no-store";
~^/manifest\.json$ "no-store";
~^/meta\.json$ "no-store";
~^/dist/ "no-store";
}
server {
listen 8080;
listen [::]:8080;
server_name _;
root /usr/share/nginx/html;
index index.html;
# Security headers (frame-ancestors complements the in-page CSP meta tag).
add_header X-Content-Type-Options "nosniff" always;
add_header Referrer-Policy "strict-origin-when-cross-origin" always;
add_header X-Frame-Options "DENY" always;
add_header Content-Security-Policy "frame-ancestors 'none';" always;
# Force HTTPS for two years and preload, closing the first-visit SSL-strip
# window that upgrade-insecure-requests alone does not cover.
add_header Strict-Transport-Security "max-age=63072000; includeSubDomains; preload" always;
# Lock down powerful features. Camera is allowed for in-page QR scanning;
# microphone/geolocation and other sensors are denied outright.
add_header Permissions-Policy "camera=(self), microphone=(), geolocation=(), payment=(), usb=(), magnetometer=(), gyroscope=(), accelerometer=()" always;
add_header Cache-Control $sb_cache always;
# Edge-cache directive for Cloudflare/CDNs (empty value → header is omitted).
add_header CDN-Cache-Control $sb_cdn_cache always;
add_header Service-Worker-Allowed "/" always;
# Real asset files must return 404 when missing — never fall back to the
# HTML shell, which would be served with the wrong content type and break
# module/script loading (e.g. a missing config/ice-servers.js).
location ~* \.(js|mjs|jsx|css|json|map|woff2?|ttf|otf|png|jpe?g|gif|webp|svg|ico|mp3|mp4|webm)$ {
try_files $uri =404;
}
# SPA-style fallback so unknown navigation routes still load the app shell.
location / {
try_files $uri $uri/ /index.html;
}
}
}