Call path from entry point to io.netty.handler.codec.http.websocketx.WebSocket00FrameEncoder.encode(ChannelHandlerContext, WebSocketFrame, List)

[vromero]

Followed the steps of hello-world-java as described (In Ubuntu 18.10) but got:

➜  hello-world-java native-image --class-path build/libs/hello-world-java-0.1-all.jar \                                                                                                 
                         -H:ReflectionConfigurationFiles=build/reflect.json \
                         -H:EnableURLProtocols=http \
                         -H:IncludeResources="logback.xml|application.yml|META-INF/services/*.*" \
                         -H:Name=hw \
                         -H:Class=hello.world.java.Application \
                         -H:+ReportUnsupportedElementsAtRuntime \
                         -H:+AllowVMInspection \
                         --delay-class-initialization-to-runtime=io.netty.handler.codec.http.HttpObjectEncoder
Build on Server(pid: 7185, port: 45909)
[hw:7185]    classlist:   1,398.77 ms
[hw:7185]        (cap):     570.04 ms
Warning: Detected unnecessary RecomputeFieldValue.ArrayBaseOffset com.oracle.svm.core.jdk.Target_java_nio_DirectByteBuffer.arrayBaseOffset substitution field for java.nio.DirectByteBuffer.arrayBaseOffset. The annotated field can be removed. This ArrayBaseOffset computation can be detected automatically. Use option -H:+UnsafeAutomaticSubstitutionsLogLevel=2 to print all automatically detected substitutions. 
[hw:7185]        setup:     792.47 ms
Warning: class initialization of class io.netty.handler.ssl.util.BouncyCastleSelfSignedCertGenerator failed with exception java.lang.NoClassDefFoundError: org/bouncycastle/jce/provider/BouncyCastleProvider. This class will be initialized at runtime because option --report-unsupported-elements-at-runtime is used for image building. Use the option --delay-class-initialization-to-runtime=io.netty.handler.ssl.util.BouncyCastleSelfSignedCertGenerator to explicitly request delayed initialization of this class.
Warning: class initialization of class io.netty.handler.ssl.JdkNpnApplicationProtocolNegotiator failed with exception java.lang.ExceptionInInitializerError. This class will be initialized at runtime because option --report-unsupported-elements-at-runtime is used for image building. Use the option --delay-class-initialization-to-runtime=io.netty.handler.ssl.JdkNpnApplicationProtocolNegotiator to explicitly request delayed initialization of this class.
Warning: class initialization of class io.netty.handler.ssl.ReferenceCountedOpenSslEngine failed with exception java.lang.NoClassDefFoundError: io/netty/internal/tcnative/SSL. This class will be initialized at runtime because option --report-unsupported-elements-at-runtime is used for image building. Use the option --delay-class-initialization-to-runtime=io.netty.handler.ssl.ReferenceCountedOpenSslEngine to explicitly request delayed initialization of this class.
[hw:7185]     analysis:  20,561.08 ms
error: Detected a direct/mapped ByteBuffer in the image heap. A direct ByteBuffer has a pointer to unmanaged C memory, and C memory from the image generator is not available at image run time. A mapped ByteBuffer references a file descriptor, which is no longer open and mapped at run time. The object was probably created by a class initializer and is reachable from a static field. By default, all class initialization is done during native image building.You can manually delay class initialization to image run time by using the option --delay-class-initialization-to-runtime=<class-name>. Or you can write your own initialization methods and call them explicitly from your main entry point.
Detailed message:
Error: Detected a direct/mapped ByteBuffer in the image heap. A direct ByteBuffer has a pointer to unmanaged C memory, and C memory from the image generator is not available at image run time. A mapped ByteBuffer references a file descriptor, which is no longer open and mapped at run time. The object was probably created by a class initializer and is reachable from a static field. By default, all class initialization is done during native image building.You can manually delay class initialization to image run time by using the option --delay-class-initialization-to-runtime=<class-name>. Or you can write your own initialization methods and call them explicitly from your main entry point.
Trace: 	object io.netty.buffer.UnpooledByteBufAllocator$InstrumentedUnpooledUnsafeNoCleanerDirectByteBuf
	object io.netty.buffer.UnreleasableByteBuf
	method io.netty.handler.codec.http.websocketx.WebSocket00FrameEncoder.encode(ChannelHandlerContext, WebSocketFrame, List)
Call path from entry point to io.netty.handler.codec.http.websocketx.WebSocket00FrameEncoder.encode(ChannelHandlerContext, WebSocketFrame, List): 
	at io.netty.handler.codec.http.websocketx.WebSocket00FrameEncoder.encode(WebSocket00FrameEncoder.java:43)
	at io.netty.handler.codec.http.websocketx.WebSocket00FrameEncoder.encode(WebSocket00FrameEncoder.java:32)
	at io.netty.handler.codec.MessageToMessageEncoder.write(MessageToMessageEncoder.java:88)
	at io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:738)
	at io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:730)
	at io.netty.channel.AbstractChannelHandlerContext.access$1900(AbstractChannelHandlerContext.java:38)
	at io.netty.channel.AbstractChannelHandlerContext$AbstractWriteTask.write(AbstractChannelHandlerContext.java:1081)
	at io.netty.channel.AbstractChannelHandlerContext$AbstractWriteTask.run(AbstractChannelHandlerContext.java:1070)
	at com.oracle.svm.core.jdk.RuntimeSupport.executeHooks(RuntimeSupport.java:142)
	at com.oracle.svm.core.jdk.RuntimeSupport.executeStartupHooks(RuntimeSupport.java:87)
	at com.oracle.svm.core.JavaMainWrapper.run(JavaMainWrapper.java:155)
	at com.oracle.svm.core.code.CEntryPointCallStubs.com_002eoracle_002esvm_002ecore_002eJavaMainWrapper_002erun_0028int_002corg_002egraalvm_002enativeimage_002ec_002etype_002eCCharPointerPointer_0029(generated:0)

Error: Processing image build request failed