This is a reproducer for the vertx issue eclipse-vertx/vertx-http-proxy#42

FYI: The reverse proxy forwards requests to api.datamuse.com/words.

To reproduce

• run ./mvnw compile exec:java to start the vertx server
• run e.g., http :8080/words sl==jirrafe

The line rc.vertx().setTimer(1, tid -> rc.next())in MainVerticle.java is supposed to mock an async call within a context handler. If the line is replaced with rc.next() only, the reverse proxy works fine.