network-transport-quic

This package provides an implementation of the network-transport interface, where networking is done via the QUIC protocol. The primary use-case for this package is as a Cloud Haskell backend.

QUIC has many advantages over TCP, including:

• No head-of-line blocking. Independent streams mean packet loss on one stream doesn't stall others;
• Connection migration. Connections survive IP address changes, which is important when a device switches from e.g. WIFI to 5G;
• Built-in encryption via TLS 1.3;

In benchmarks, network-transport-quic performs better than network-transport-tcp in dense network topologies. For example, if every EndPoint in your network connects to every other EndPoint, you might benefit greatly from switching to network-transport-quic!

Usage example

Provided you have a TLS 1.3 certificate, you can create a Transport like so:

import Data.List.NonEmpty qualified as NonEmpty
import Network.Transport.QUIC (QUICTransportConfig(..), createTransport, credentialLoadX509)

main = do
    let certificate = "path/to/cert.crt"
        key = "path/to/cert.key"

    creds <- credentialLoadX509 certificate key
    case creds of
        Left error_message -> error error_message
        Right credential -> do
            let config = QUICTransportConfig
                            { hostName = "my.hostname.com" -- or some IP address
                            , serviceName = "https" -- alternatively, some port number
                            , credentials = NonEmpty.singleton credential
                            , validateCredentials = True -- should be 'False' for self-signed certificate
                            }
            transport <- createTransport config
            ...

There are tools online to help create self-signed TLS 1.3 certificates.