- Implement If-Range for ConditionalRequest
- Add reader for date format according to https://tools.ietf.org/html/rfc2616#section-3.3
- Add tests for HEAD requests
- Add more tests from https://github.com/AchinthaReemal/ESBHttpComplianceTest
- Check strong/weak validation logic
- Add support for websockets and TCP connections
- Check ReactPHP/MySQL
- Add framework for simple asynchronous handling: swoole/swoole-src#2855 (comment)
- Extract ScopeAware interface to make sure databases can implement it