Ktor 3.4 also introduces a new API for dynamically documenting endpoints that works in tandem with a new compiler plugin. Instead of building a Swagger front end from a static file, the model is built at runtime from details embedded in the routing tree. To generate documentation, developers can enable it through the Ktor Gradle plugin, then it will automatically provide details in code via the new describe API.
Also in Ktor 3.4, the OkHttp client engine now supports duplex streaming, enabling clients to send request body data and receive response data simultaneously, in contrast to regular HTTP calls, where the request body must be fully sent before the response begins. Duplex streaming is available for HTTP/2 connections and can be enabled using the new duplexStreamingEnabled property in OkHttpConfig.
And the Compression plugin now supports Ztsd via a ktor-server-compression-zstd module. Zstd is a fast compression algorithm with high compression ratios, low compression times, and a configurable compression level.
