softwaremill/sttp v4.0.0 on GitHub

This is the stable release of sttp-client4, a major release of the Scala HTTP client you always wanted!

New features

simple use-cases, simple types: most of the time you'll work with Request[T], SyncBackend or Backend[F], reducing the number of type parameters involved
much better error reporting, due to the above simplifications
better integration with IDE's auto-complete
clearer types for streaming & WebSocket requests
...OrFailed response descriptions
client-side, configurable compression support
deeper metrics & logging integration
improved OpenTelemetry, Prometheus, Logging backends
reworked documentation with a library of examples
request body progress callbacks for HttpClient-based backends
onBodyReceived callback support
more predictable BackendStub behavior
a number of quality-of-life improvements, extending scaladocs and making the API more consistent