Files
derp/docs/DEBUG.md
user bf45abcbad feat: initial implementation
Asyncio IRC bot with decorator-based plugin system.
Zero external dependencies, Python 3.11+.

- IRC protocol: message parsing, formatting, async TCP/TLS connection
- Plugin system: @command and @event decorators, file-based loading
- Bot orchestrator: connect, dispatch, reconnect, nick recovery
- CLI: argparse entry point with TOML config
- Built-in plugins: ping, help, version, echo
- 28 unit tests for parser and plugin system
2026-02-15 00:37:31 +01:00

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# Debugging
## Verbose Mode
```bash
derp --verbose
```
Shows all IRC traffic:
```
>>> NICK derp
>>> USER derp 0 * :derp IRC bot
<<< :server 001 derp :Welcome
>>> JOIN #test
```
## Log Levels
Set in `config/derp.toml`:
```toml
[logging]
level = "debug" # debug, info, warning, error
```
## Common Issues
### Connection refused
```
ERROR derp.irc connection lost: [Errno 111] Connection refused
```
- Check `host` and `port` in config
- Verify TLS setting matches port (6697 = TLS, 6667 = plain)
- Test connectivity: `nc -zv <host> <port>`
### Nickname in use
The bot appends `_` to the nick and retries automatically. Check logs for:
```
<<< :server 433 * derp :Nickname is already in use
>>> NICK derp_
```
### TLS certificate errors
If the server uses a self-signed certificate, you may need to adjust the SSL context. Currently uses system default CA bundle.
### Plugin load failures
```
ERROR derp.plugin failed to load plugin: plugins/broken.py
```
- Check plugin file for syntax errors: `python -c "import plugins.broken"`
- Ensure handlers are `async def`
- Check imports (`from derp.plugin import command, event`)
### No response to commands
- Verify `prefix` in config matches what you type
- Check that the plugin is loaded (look for "loaded plugin" in verbose output)
- Ensure the bot has joined the channel
## Testing IRC Connection
```bash
# Test raw IRC (without the bot)
openssl s_client -connect irc.libera.chat:6697
# Then type: NICK testbot / USER testbot 0 * :test
```