Unstable test Http2Test.testHttpConnect, possibly due to garbage collected NetClient

[ahus1]

Version

master

Context

The test sometimes fails, with a percentage of 20% (?) when running it locally in my IDE.
It also failed in the CI

See https://github.com/eclipse-vertx/vert.x/actions/runs/20429375873/job/58696486105

Steps to reproduce

Run the test.

When debugging this, I found that the following snippet connects to NetServer, but then disconnects immediately without sending any data. I assume that the NetClient is garbage collected.

I'll prepare a PR where this no longer happens by keeping a reference.

vert.x/vertx-core/src/test/java/io/vertx/tests/http/HttpTest.java

Lines 4782 to 4801 in 785b9cf

	vertx.createNetServer(new NetServerOptions().setPort(1235).setHost("localhost")).connectHandler(socket -> {
	socket.handler(socket::write);
	closeSocket.thenAccept(v -> {
	socket.close();
	});
	}).listen().onComplete(onSuccess(netServer -> {
	server.requestHandler(req -> {
	vertx.createNetClient(new NetClientOptions()).connect(1235, "localhost").onComplete(onSuccess(dst -> {
	req.response().setStatusCode(sc);
	req.response().setStatusMessage("Connection established");
	// Now create a NetSocket
	req.toNetSocket().onComplete(onSuccess(src -> {
	// Create pumps which echo stuff
	src.pipeTo(dst);
	dst.pipeTo(src);
	}));
	}));
	});

Do you have a reproducer?

No response