Hi, while migrating a Project from Camel 3 to Camel 4 I noticed that the $USER:$PASSWORD@$SERVER notation for basic authentication no longer works.
`to("https://USER:PASSWORD@localhost:8080/example?authenticationPreemptive=true")` works in Camel 3.21.2 but fails in Camel 4.0.3 with: org.apache.hc.client5.http.ClientProtocolException: No credentials for preemptive authentication at org.apache.hc.client5.http.impl.classic.InternalHttpClient.doExecute(InternalHttpClient.java:173) at org.apache.hc.client5.http.impl.classic.CloseableHttpClient.execute(CloseableHttpClient.java:245) at org.apache.camel.component.http.HttpProducer.executeMethod(HttpProducer.java:487) at org.apache.camel.component.http.HttpProducer.process(HttpProducer.java:269) at org.apache.camel.support.AsyncProcessorConverterHelper$ProcessorToAsyncProcessorBridge.process(AsyncProcessorConverterHelper.java:65) at org.apache.camel.processor.SendProcessor.process(SendProcessor.java:172) at org.apache.camel.processor.errorhandler.RedeliveryErrorHandler$SimpleTask.run(RedeliveryErrorHandler.java:475) at org.apache.camel.impl.engine.DefaultReactiveExecutor$Worker.executeReactiveWork(DefaultReactiveExecutor.java:196) at org.apache.camel.impl.engine.DefaultReactiveExecutor$Worker.schedule(DefaultReactiveExecutor.java:164) at org.apache.camel.impl.engine.DefaultReactiveExecutor.scheduleMain(DefaultReactiveExecutor.java:59) at org.apache.camel.processor.Pipeline.process(Pipeline.java:163) at org.apache.camel.impl.engine.CamelInternalProcessor.process(CamelInternalProcessor.java:383) at org.apache.camel.impl.engine.DefaultAsyncProcessorAwaitManager.process(DefaultAsyncProcessorAwaitManager.java:81) at org.apache.camel.support.AsyncProcessorSupport.process(AsyncProcessorSupport.java:32) at org.apache.camel.component.jms.EndpointMessageListener.onMessage(EndpointMessageListener.java:132) at org.springframework.jms.listener.AbstractMessageListenerContainer.doInvokeListener(AbstractMessageListenerContainer.java:736) at org.springframework.jms.listener.AbstractMessageListenerContainer.invokeListener(AbstractMessageListenerContainer.java:696) at org.springframework.jms.listener.AbstractMessageListenerContainer.doExecuteListener(AbstractMessageListenerContainer.java:674) at org.springframework.jms.listener.AbstractPollingMessageListenerContainer.doReceiveAndExecute(AbstractPollingMessageListenerContainer.java:330) at org.springframework.jms.listener.AbstractPollingMessageListenerContainer.receiveAndExecute(AbstractPollingMessageListenerContainer.java:245) at org.springframework.jms.listener.DefaultMessageListenerContainer$AsyncMessageListenerInvoker.invokeListener(DefaultMessageListenerContainer.java:1239) at org.springframework.jms.listener.DefaultMessageListenerContainer$AsyncMessageListenerInvoker.executeOngoingLoop(DefaultMessageListenerContainer.java:1229) at org.springframework.jms.listener.DefaultMessageListenerContainer$AsyncMessageListenerInvoker.run(DefaultMessageListenerContainer.java:1122) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.base/java.lang.Thread.run(Unknown Source) Caused by: org.apache.hc.core5.http.HttpException: No credentials for preemptive authentication at org.apache.camel.component.http.PreemptiveAuthExecChainHandler.execute(PreemptiveAuthExecChainHandler.java:52) at org.apache.hc.client5.http.impl.classic.ExecChainElement.execute(ExecChainElement.java:51) at org.apache.hc.client5.http.impl.classic.InternalHttpClient.doExecute(InternalHttpClient.java:170) ... 25 common frames omitted I did not find anything related to this in https://camel.apache.org/manual/camel-4-migration-guide.html Did I miss something? Is this an intentional behavior change or a bug? It works if I use `to("https://localhost:8080/example?authenticationPreemptive=true&authUsername=USER&authPassword=PASSWORD")` instead. Thanks and kind regards, Pascal