---
title: "cancel"
sidebar_label: "cancel"
description: "Kotlin binding reference: cancel."
---

<!-- Generated by tools/api_reference/generate_api_docs.py. Do not edit. -->

//[clika-runtime](../../../index.md)/[io.clika.runtime](../index.md)/[Executor](index.md)/[cancel](cancel.md)

# cancel

[common]\
fun [cancel](cancel.md)(session: [SessionId](../SessionId/index.md))

Cooperatively cancel an in-flight session; a completed one is a no-op, an unknown one fails with `NOT_FOUND`.