The following test case will reproduce and the test 'testAsyncResponseReadListener' will fail. I will attach a project tgz to help. package bug import org.apache.commons.io.IOUtils import org.jboss.resteasy.plugins.server.undertow.UndertowJaxrsServer import org.jboss.resteasy.test.TestPortProvider import org.junit.AfterClass import org.junit.Assert import org.junit.BeforeClass import org.junit.Test import javax.servlet.ReadListener import javax.servlet.ServletInputStream import javax.servlet.http.HttpServletRequest import javax.ws.rs.ApplicationPath import javax.ws.rs.GET import javax.ws.rs.POST import javax.ws.rs.Path import javax.ws.rs.client.Client import javax.ws.rs.client.ClientBuilder import javax.ws.rs.client.Entity import javax.ws.rs.container.AsyncResponse import javax.ws.rs.container.ContainerRequestContext import javax.ws.rs.container.ContainerRequestFilter import javax.ws.rs.container.ContainerResponseContext import javax.ws.rs.container.ContainerResponseFilter import javax.ws.rs.container.ResourceInfo import javax.ws.rs.container.Suspended import javax.ws.rs.core.Application import javax.ws.rs.core.Context import javax.ws.rs.core.Response import javax.ws.rs.ext.Provider import java.lang.reflect.Method import java.util.concurrent.TimeUnit class RestEasyTest { private static UndertowJaxrsServer server @Provider public static class Filter implements ContainerRequestFilter, ContainerResponseFilter { @Context private ResourceInfo resourceInfo @Override void filter(ContainerRequestContext requestContext) throws IOException { Method method = resourceInfo.resourceMethod println( "Got method ${method.name} on request" ) } @Override void filter(ContainerRequestContext requestContext, ContainerResponseContext responseContext) throws IOException { Method method = resourceInfo.resourceMethod //<-- fails here when using ReadListener println( "Got method ${method.name} on response" ) } } @Path( '/test' ) public static class Resource { @Context private HttpServletRequest request @GET @Path( '/asyncresponse' ) public void asyncresponse(@Suspended AsyncResponse ar) { ar.setTimeout(10, TimeUnit.SECONDS) ar.resume( 'hello world' ) } @POST @Path( "/asyncresponse/inputstream" ) public void asyncresponse_InputStream(@Suspended AsyncResponse ar) { ar.setTimeout(10, TimeUnit.SECONDS) InputStream inputStream = request.getInputStream() ByteArrayOutputStream outputStream = new ByteArrayOutputStream() IOUtils.copy(inputStream, outputStream) inputStream.close() outputStream.flush() outputStream.close() ar.resume(outputStream.toString( 'UTF-8' )) } @POST @Path( "/asyncresponse/bufferedreader" ) public void asyncresponse_BufferedReader(@Suspended AsyncResponse ar) { ar.setTimeout(10, TimeUnit.SECONDS) BufferedReader reader = request.getReader() StringBuilder builder = new StringBuilder() String line = null while ((line = reader.readLine()) != null ) builder.append(line) reader.close() ar.resume(builder.toString()) } @POST @Path( "/asyncresponse/readlistener" ) public void asyncresponse_ReadListener(@Suspended AsyncResponse async) { ServletInputStream inputStream = request.getInputStream() ByteArrayOutputStream outputStream = new ByteArrayOutputStream() inputStream.readListener = new ReadListener() { @Override public void onDataAvailable() throws IOException { IOUtils.copy(inputStream, outputStream) } @Override public void onAllDataRead() throws IOException { inputStream.close() outputStream.flush() outputStream.close() async.resume(outputStream.toString( 'UTF-8' )) } @Override public void onError(Throwable t) { async.resume(t) } } } } @ApplicationPath( "/base" ) public static class MyApp extends Application { @Override public Set< Class <?>> getClasses() { Set< Class <?>> classes = new HashSet<>() classes.add(Resource) classes.add(Filter) classes } } @BeforeClass public static void init() throws Exception { server = new UndertowJaxrsServer().start() server.deploy(MyApp) } @AfterClass public static void stop() throws Exception { server.stop() } @Test public void testAsyncResponse() { Client client = ClientBuilder.newClient() String val = client.target(TestPortProvider.generateURL( '/base/test/asyncresponse' )).request().get( String ) Assert.assertEquals( 'hello world' , val) client.close() } @Test public void testAsyncResponseInputStream() { testEndpoint( '/base/test/asyncresponse/inputstream' ) } @Test public void testAsyncResponseBufferedReader() { testEndpoint( '/base/test/asyncresponse/bufferedreader' ) } @Test public void testAsyncResponseReadListener() { testEndpoint( '/base/test/asyncresponse/readlistener' ) } private void testEndpoint( String endpoint) { Client client = ClientBuilder.newClient() Response response = client.target(TestPortProvider.generateURL(endpoint)).request().post(Entity.entity( 'hello world' , 'text/plain' )) String val = response.readEntity( String ) Assert.assertEquals( 'hello world' , val) client.close() } }