Fixes #4307 - Fix Accept header processing

http/webapp/src/main/java/cloud/piranha/http/webapp/HttpWebApplicationRequest.java

@@ -89,6 +89,15 @@ private void populateRequest(HttpServerRequest serverRequest) {
         while (headerNames.hasNext()) {
             String name = headerNames.next();
             String value = serverRequest.getHeader(name);
+
+            /*
+             * If the request is passing in an Accept header we should honor it
+             * and remove the default Accept header.
+             */
+            if (name.equalsIgnoreCase("Accept")) {
+                headerManager.removeHeader("Accept");
+            }
+
             serverRequest.getHeaders(name).forEachRemaining(x -> addHeader(name, x));
             if (name.equalsIgnoreCase("Content-Type")) {
                 setContentType(value);

test/coreprofile/integration/src/main/java/cloud/piranha/test/coreprofile/distribution/ProducesBean.java

@@ -0,0 +1,54 @@
+/*
+ * Copyright (c) 2002-2024 Manorrock.com. All Rights Reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *   1. Redistributions of source code must retain the above copyright notice,
+ *      this list of conditions and the following disclaimer.
+ *   2. Redistributions in binary form must reproduce the above copyright
+ *      notice, this list of conditions and the following disclaimer in the
+ *      documentation and/or other materials provided with the distribution.
+ *   3. Neither the name of the copyright holder nor the names of its
+ *      contributors may be used to endorse or promote products derived from
+ *      this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+package cloud.piranha.test.coreprofile.distribution;
+
+import jakarta.ws.rs.GET;
+import jakarta.ws.rs.Path;
+import jakarta.ws.rs.Produces;
+import static jakarta.ws.rs.core.MediaType.TEXT_PLAIN;
+
+/**
+ * The bean to test the Produces annotation.
+ * 
+ * @author Manfred Riem ([email protected])
+ */
+@Path("produces")
+public class ProducesBean {
+
+    /**
+     * Test to validate NOT_ACCEPTABLE (406) is returned.
+     * 
+     * @return "This should not show up!"
+     */
+    @GET
+    @Path("notAcceptable")
+    @Produces(TEXT_PLAIN) 
+    public String notAcceptable() { 
+        return "This should not show up!";
+    } 
+}

test/coreprofile/integration/src/test/java/cloud/piranha/test/coreprofile/distribution/ProducesIT.java

@@ -0,0 +1,58 @@
+/*
+ * Copyright (c) 2002-2024 Manorrock.com. All Rights Reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *   1. Redistributions of source code must retain the above copyright notice,
+ *      this list of conditions and the following disclaimer.
+ *   2. Redistributions in binary form must reproduce the above copyright
+ *      notice, this list of conditions and the following disclaimer in the
+ *      documentation and/or other materials provided with the distribution.
+ *   3. Neither the name of the copyright holder nor the names of its
+ *      contributors may be used to endorse or promote products derived from
+ *      this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+package cloud.piranha.test.coreprofile.distribution;
+
+import org.junit.jupiter.api.Test;
+
+import java.net.URI;
+import java.net.http.HttpClient;
+import java.net.http.HttpRequest;
+import java.net.http.HttpResponse;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotEquals;
+
+public class ProducesIT {
+
+    @Test
+    public void notAcceptable() throws Exception {
+        HttpClient client = HttpClient.newHttpClient();
+        HttpRequest request = HttpRequest.newBuilder()
+                .uri(URI.create("http://localhost:"
+                        + System.getProperty("httpPort")
+                        + "/piranha-test-coreprofile-integration/produces/notAcceptable"))
+                .header("Accept", "text/xml")
+                .GET()
+                .build();
+
+        HttpResponse<String> response = client.send(request, 
+                HttpResponse.BodyHandlers.ofString());
+
+        assertEquals(406, response.statusCode());
+        assertNotEquals("This should not show up!", response.body());
+    }
+}