aioquic is a library for the QUIC network protocol in Python. It features
a minimal TLS 1.3 implementation, a QUIC stack and an HTTP/3 stack.
QUIC standardisation is not finalised yet, but
aioquic closely tracks the
specification drafts and is regularly tested for interoperability against other
To learn more about
aioquic please read the documentation.
Why should I use
aioquic has been designed to be embedded into Python client and server
libraries wishing to support QUIC and / or HTTP/3. The goal is to provide a
common codebase for Python libraries in the hope of avoiding duplicated effort.
Both the QUIC and the HTTP/3 APIs follow the "bring your own I/O" pattern, leaving actual I/O operations to the API user. This approach has a number of advantages including making the code testable and allowing integration with different concurrency models.
- QUIC stack conforming with draft-23
- HTTP/3 stack conforming with draft-23
- minimal TLS 1.3 implementation
- IPv4 and IPv6 support
- connection migration and NAT rebinding
- logging TLS traffic secrets
- logging QUIC events in QLOG format
- HTTP/3 server push support
Running the examples
aioquic requires Python 3.6 or better, and the OpenSSL development headers.
$ sudo apt install libssl-dev python3-dev
After checking out the code using git you can run:
$ pip install -e . $ pip install aiofiles asgiref httpbin starlette wsproto
You can run the example server, which handles both HTTP/0.9 and HTTP/3:
$ python examples/http3_server.py --certificate tests/ssl_cert.pem --private-key tests/ssl_key.pem
You can run the example client to perform an HTTP/3 request:
$ python examples/http3_client.py --ca-certs tests/pycacert.pem https://localhost:4433/
Alternatively you can perform an HTTP/0.9 request:
$ python examples/http3_client.py --ca-certs tests/pycacert.pem --legacy-http https://localhost:4433/
You can also open a WebSocket over HTTP/3:
$ python examples/http3_client.py --ca-certs tests/pycacert.pem wss://localhost:4433/ws
aioquic is released under the BSD license.