ktor-samples | Samples from the talk Introduction to Ktor | Learning library

I'm wondering how to change allowed file size for multipart-files in ktor? I can not find anything in the documentation about this (only how to receive multipart-files). I'm using embedded netty server. I will limit filesize on the client but it would be good to also have that restriction on the server.

Searched the web and the only two things I found related to the topic is this example (seems to be configuration for a WAR file): https://github.com/ktorio/ktor-samples/blob/master/other/maven-google-appengine-standard/webapp/WEB-INF/web.xml

and this example (how to receive multipart requests: https://github.com/ktorio/ktor-samples/blob/master/app/youkube/src/Upload.kt

I'm working on a web app written with a Kotlin backend and React frontend, that uses Ktor to set up a web server. I'm currently trying to add functionality that requires a WebSocket connection, and to maintain state across the WebSocket session, using the custom session model from the Ktor example chat app here: https://github.com/ktorio/ktor-samples/tree/master/app/chat/src.

However, I'm getting an issue with the reflection Ktor is doing to create these sessions.

The custom session is defined as follows:

I am trying to understand the HTML builder in Kotlin / Ktor. The example here uses the HTML builder to build the result: