Jetty 11/12 async servlet stream reset behavior

This is an example project to explore how Jetty invokes async servlet callbacks when a client disconnects. A servlet is set up to run from an h2c-only server (no tls for easier setup) on port 10000. There are three commands that can run servers in this way:

• ./gradlew :jetty-11:run will run a Jetty 11 (with ee9) server
• ./gradlew :jetty-12:ee9:run will run a Jetty 12 (with ee9) server
• ./gradlew :jetty-12:ee10:run will run a Jetty 12 (with ee10) server

Each server has slightly different behavior in this test.

Then in a separate terminal, the client can be run with the command ./gradlew :client:run. With all three servers, the wire traffic seems to be the same, and the resulting client output is the same, but each has different handling of the client's RST_STREAM.