## Changelog
### 🌐 Network Resilience
- **Auto DNS rotation**: New `CUSTOM_DNS=auto` mode (now default) starts
with system DNS and automatically rotates through Cloudflare, Google,
Quad9, and OpenDNS when failures are detected. DNS results are cached to
improve performance.
- **Mirror failover**: Anna's Archive requests automatically fail over
between mirrors (.org, .se, .li) when one is unreachable
- **Round-robin source distribution**: Concurrent downloads are
distributed across different AA partner servers to avoid rate limiting
### 📥 Download Reliability
- **Much more reliable downloads**: Improved parsing of Anna's Archive
pages, smarter source prioritization, and better retry logic with
exponential backoff
- **Download resume support**: Interrupted downloads can now resume from
where they left off (if the server supports Range requests)
- **Cookie sharing**: Cloudflare bypass cookies are extracted and shared
with subsequent requests, often avoiding the need for re-bypass entirely
- **Stall detection**: Downloads with no progress for 5 minutes are
automatically cancelled and retried
- **Staggered concurrent downloads**: Small delays between starting
concurrent downloads to avoid hitting rate limits
- **Source failure tracking**: After multiple failures from the same
source type (e.g., Libgen), that source is temporarily skipped
- **Lazy welib loading**: Welib sources are fetched as a fallback only
when primary sources fail (unless `PRIORITIZE_WELIB` is enabled)
### 🛡️ Cloudflare & Protection Bypass
- **DDOS-Guard support**: Internal bypasser now detects and handles
DDOS-Guard challenges with dedicated bypass strategies
- **Cancellation support**: Bypass operations can now be cancelled
mid-operation when user cancels a download
- **Smart warmup**: Chrome driver is pre-warmed when first client
connects (controlled by `BYPASS_WARMUP_ON_CONNECT` env var) and shuts
down after periods of inactivity
### 🔌 External Bypasser (FlareSolverr)
- **Improved resilience**: Retry with exponential backoff, mirror/DNS
rotation on failure, and proper timeout handling
- **Cancellation support**: External bypasser operations respect
cancellation flags
### 🖥️ Web UI Improvements
- **Simplified download status**: Removed intermediate states
(bypassing, verifying, ingesting) — now just shows Queued → Resolving →
Downloading → Complete
- **Status messages**: Downloads show detailed status like "Trying
Anna's Archive (Server 3)" or "Server busy, trying next...", or live
waitlist countdowns.
- **Improved download sidebar**:
- Downloads sorted by add time (newest first)
- X button moved to top-right corner for better UX
- Wave animation on in-progress items
- Error messages shown directly on failed items
- X button on completed/errored items clears them from the list
### ⚙️ Configuration Changes
- **`CUSTOM_DNS=auto`** is now the default (previously empty/system DNS)
- **`DOWNLOAD_PROGRESS_UPDATE_INTERVAL`** default changed from 5s to 1s
for smoother progress
- **`BYPASS_WARMUP_ON_CONNECT`** (default: true) — warm up Chrome when
first client connects
### 🐛 Bug Fixes
- **Download cancellation actually works**: Fixed issue where cancelling
downloads didn't properly stop in-progress operations
- **WELIB prioritization**: Fixed `PRIORITIZE_WELIB` not being respected
- **File exists handling**: Downloads to same filename now get `_1`,
`_2` suffix instead of overwriting
- **Empty search results**: "No books found" now returns empty list
instead of throwing exception
- **Search unavailable error**: Network/mirror failures during search
now return proper 503 error to client
The Calibre dependency was due to the script testing for validity of the
downloaded file, as often they would be corrupted from aa. But CWA is
already doing that, so we are just having redundant code here.
For the cloudflarebypasser, I basically run my own version now, instead
of depending on an external library, this way we have better control for
debugging and on the docker image.
Fixes#18, #33, #27, #48, #65, #78, #86, #88, #89
---------
Co-authored-by: mik593 <91991279+mik593@users.noreply.github.com>
This PR uses the Anna's Archive API to get a fast download URL to
download the book directly. Bypasses parsing HTML with the Cloudflare
proxy.
---------
Co-authored-by: Laurids Düllmann <laurids@vicegold.com>
Alex
CaliBrain
FlappyTapsandLaurids Düllmann