NettyConnector does not respect timeouts

[dude-abides]

I am using Dropwizard 4 (Jersey 3.0.5) on Java 17.

If I make a request, shutdown the server, and make a subsequent request, it hangs despite setting connection timeout to 30s.

[jansupol]

You have tried this with 3.0.13, right?

[dude-abides]

I just tried with 3.1.6 and 3.0.13, and timeouts are not respected.

[senivam]

I've implemented a test to reproduce the described behavior. Timeout is being set:

protected void configureClient(ClientConfig config) {
        config.property(ClientProperties.READ_TIMEOUT, timeOutValue)
                .connectorProvider(new NettyConnectorProvider());
    }

and instead of the server being shut down, it only runs indefinitely:

while (true) {
                    try {
                        Thread.sleep(10000);
                    } catch (InterruptedException e) {
                        throw new RuntimeException(e);
                    }
                }

test expects exception to be thrown:

assertThrows(ProcessingException.class, () -> target(RESOURCE_PATH).request().get());

the TimeoutException is being wrapped with ProcessingException but it's being thrown correctly. How do you define a timeout in the DropWizard?

[dude-abides]

For the timeout issue I was setting connect timeout and read timeout to 60s. I pointed the client at a remote (not localhost) server that was not running. It never connected and never timed out.

[senivam]

if you modify the given test to use connect tiomeout:

protected void configureClient(ClientConfig config) {
        config.property(ClientProperties.CONNECT_TIMEOUT, timeOutValue)
                .connectorProvider(new NettyConnectorProvider());
    }

and the target would be

public WebTarget target(String path) {
        return client().target(String.format("http://8.8.8.8:80", portNumber)).path(path);
    }

the test still fails with the message:

javax.ws.rs.ProcessingException: connection timed out after 9997 ms: /8.8.8.8:80
	at org.glassfish.jersey.netty.connector.NettyConnector.apply(NettyConnector.java:172)
	at org.glassfish.jersey.client.ClientRuntime.invoke(ClientRuntime.java:300)
	at org.glassfish.jersey.client.JerseyInvocation.lambda$invoke$0(JerseyInvocation.java:674)
	at org.glassfish.jersey.client.JerseyInvocation.call(JerseyInvocation.java:709)
	at org.glassfish.jersey.client.JerseyInvocation.lambda$runInScope$3(JerseyInvocation.java:703)
	at org.glassfish.jersey.internal.Errors.process(Errors.java:292)
	at org.glassfish.jersey.internal.Errors.process(Errors.java:274)
	at org.glassfish.jersey.internal.Errors.process(Errors.java:205)
	at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:390)
	at org.glassfish.jersey.client.JerseyInvocation.runInScope(JerseyInvocation.java:703)
	at org.glassfish.jersey.client.JerseyInvocation.invoke(JerseyInvocation.java:673)
	at org.glassfish.jersey.client.JerseyInvocation$Builder.method(JerseyInvocation.java:413)
	at org.glassfish.jersey.client.JerseyInvocation$Builder.get(JerseyInvocation.java:313)
	at org.glassfish.jersey.tests.e2e.client.nettyconnector.NettyConnectorTimeoutTest.testNettyConnectorTimeout(NettyConnectorTimeoutTest.java:82)
	at java.base/java.lang.reflect.Method.invoke(Method.java:580)
	at java.base/java.util.concurrent.RecursiveAction.exec(RecursiveAction.java:194)
	at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:387)
	at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1312)
	at java.base/java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1843)
	at java.base/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1808)
	at java.base/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:188)
Caused by: io.netty.channel.ConnectTimeoutException: connection timed out after 9997 ms: /8.8.8.8:80
	at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe$1.run(AbstractNioChannel.java:261)
	at io.netty.util.concurrent.PromiseTask.runTask(PromiseTask.java:98)
	at io.netty.util.concurrent.ScheduledFutureTask.run(ScheduledFutureTask.java:153)
	at io.netty.util.concurrent.AbstractEventExecutor.runTask(AbstractEventExecutor.java:173)
	at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:166)
	at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:470)
	at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:569)
	at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997)
	at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
	at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
	at java.base/java.lang.Thread.run(Thread.java:1583)

default connection timeout for the Netty Client is 30s, so if it is not event set, the connection should fail after 30 seconds (I've tested it as well and it behaves so).

[senivam]

for the 60s custom timeout Netty Client fails as well:

javax.ws.rs.ProcessingException: connection timed out after 60000 ms: /8.8.8.8:80
	at org.glassfish.jersey.netty.connector.NettyConnector.apply(NettyConnector.java:172)
	at org.glassfish.jersey.client.ClientRuntime.invoke(ClientRuntime.java:300)
	at org.glassfish.jersey.client.JerseyInvocation.lambda$invoke$0(JerseyInvocation.java:674)
	at org.glassfish.jersey.client.JerseyInvocation.call(JerseyInvocation.java:709)
	at org.glassfish.jersey.client.JerseyInvocation.lambda$runInScope$3(JerseyInvocation.java:703)
	at org.glassfish.jersey.internal.Errors.process(Errors.java:292)
	at org.glassfish.jersey.internal.Errors.process(Errors.java:274)
	at org.glassfish.jersey.internal.Errors.process(Errors.java:205)
	at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:390)
	at org.glassfish.jersey.client.JerseyInvocation.runInScope(JerseyInvocation.java:703)
	at org.glassfish.jersey.client.JerseyInvocation.invoke(JerseyInvocation.java:673)
	at org.glassfish.jersey.client.JerseyInvocation$Builder.method(JerseyInvocation.java:413)
	at org.glassfish.jersey.client.JerseyInvocation$Builder.get(JerseyInvocation.java:313)
	at org.glassfish.jersey.tests.e2e.client.nettyconnector.NettyConnectorTimeoutTest.testNettyConnectorTimeout(NettyConnectorTimeoutTest.java:82)
	at java.base/java.lang.reflect.Method.invoke(Method.java:580)
	at java.base/java.util.concurrent.RecursiveAction.exec(RecursiveAction.java:194)
	at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:387)
	at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1312)
	at java.base/java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1843)
	at java.base/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1808)
	at java.base/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:188)
Caused by: io.netty.channel.ConnectTimeoutException: connection timed out after 60000 ms: /8.8.8.8:80
	at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe$1.run(AbstractNioChannel.java:261)
	at io.netty.util.concurrent.PromiseTask.runTask(PromiseTask.java:98)
	at io.netty.util.concurrent.ScheduledFutureTask.run(ScheduledFutureTask.java:153)
	at io.netty.util.concurrent.AbstractEventExecutor.runTask(AbstractEventExecutor.java:173)
	at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:166)
	at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:470)
	at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:569)
	at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997)
	at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
	at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
	at java.base/java.lang.Thread.run(Thread.java:1583)

[dude-abides]

I will attempt to reproduce when I get a chance.