NPE in NetServerMetricsImpl

[gokl]

Hi,

I have logged several NPEs during a time where there were network problems on our servers.

We are doing HTTP requests with the Vertx HttpClient. The exceptions led to handlers not being called anymore, neither exception handler nor other handlers. And this led to a effectively dead verticle.

To me it looks like remoteAddress was null, but I have no idea how that could have happened. I cannot reproduce it. If you have an idea please let me know.

Here is the stacktrace I have:

io.vertx.core.impl.ContextImpl 'Unhandled exception'
java.lang.NullPointerException
        at io.vertx.ext.dropwizard.impl.NetServerMetricsImpl.connected(NetServerMetricsImpl.java:60)
        at io.vertx.ext.dropwizard.impl.HttpClientMetricsImpl.connected(HttpClientMetricsImpl.java:68)
        at io.vertx.ext.dropwizard.impl.HttpClientMetricsImpl.connected(HttpClientMetricsImpl.java:33)
        at io.vertx.core.http.impl.ClientConnection.<init>(ClientConnection.java:92)
        at io.vertx.core.http.impl.HttpClientImpl.createConn(HttpClientImpl.java:815)
        at io.vertx.core.http.impl.HttpClientImpl.lambda$connected$74(HttpClientImpl.java:808)
        at io.vertx.core.impl.ContextImpl.lambda$wrapTask$18(ContextImpl.java:333)
        at io.vertx.core.impl.OrderedExecutorFactory$OrderedExecutor.lambda$new$265(OrderedExecutorFactory.java:91)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        at java.lang.Thread.run(Thread.java:745)