Hi, where can I find more information about HttpClient pipelines and it's corresponding phases?

https://ktor.io/clients/http-client/features.html That will give you links to the HttpRequestPipeline and HttpResponsePipeline that describe what phases there are and what they should be used for. HttpRequestPipeline https://github.com/ktorio/ktor/blob/master/ktor-client/ktor-client-core/common/src/io/ktor/client/request/HttpRequestPipeline.kt HttpResponsePipeline https://github.com/ktorio/ktor/blob/master/ktor-client/ktor-client-core/common/src/io/ktor/client/response/HttpResponsePipeline.kt