Expected behavior

Server sends a WINDOW_UPDATE after the window is completed.

Actual behavior

Server throws exceptions from:

after Delta grows perpetually, never being reset, and throws this exception upstream via a promise to which nothing listening.

Steps to reproduce

Run the test class in this gradle project.

Minimal yet complete reproducer code (or URL to code)

https://gist.github.com/ti2ger92/18c9c4439192d7e88996dbe928e3c300

Netty version

4.1.42

JVM version (e.g. java -version)

1.8.0_202, x86_64: "AdoptOpenJDK 8"

OS version (e.g. uname -a)

Darwin f01898596f5f.ant.amazon.com 17.7.0 Darwin Kernel Version 17.7.0: Sun Jun 2 20:31:42 PDT 2019; root:xnu-4570.71.46~1/RELEASE_X86_64 x86_64