Implementation of Netty HTTP redirect logic being custom replaceble.

connectors/netty-connector/src/main/java/org/glassfish/jersey/netty/connector/JerseyClientHandler.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016, 2024 Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2016, 2025 Oracle and/or its affiliates. All rights reserved.
  *
  * This program and the accompanying materials are made available under the
  * terms of the Eclipse Public License v. 2.0, which is available at
@@ -18,8 +18,6 @@
 
 import java.io.IOException;
 import java.net.URI;
-import java.util.Iterator;
-import java.util.List;
 import java.util.Locale;
 import java.util.Map;
 import java.util.Set;
@@ -28,8 +26,6 @@
 import java.util.concurrent.TimeoutException;
 import java.util.function.Predicate;
 
-import javax.ws.rs.HttpMethod;
-import javax.ws.rs.core.MultivaluedMap;
 import javax.ws.rs.core.Response;
 
 import org.glassfish.jersey.client.ClientProperties;
@@ -67,6 +63,7 @@ class JerseyClientHandler extends SimpleChannelInboundHandler<HttpObject> {
     private final boolean followRedirects;
     private final int maxRedirects;
     private final NettyConnector connector;
+    private final NettyHttpRedirectController redirectController;
 
     private NettyInputStream nis;
     private ClientResponse jerseyResponse;
@@ -83,6 +80,10 @@ class JerseyClientHandler extends SimpleChannelInboundHandler<HttpObject> {
         this.followRedirects = jerseyRequest.resolveProperty(ClientProperties.FOLLOW_REDIRECTS, true);
         this.maxRedirects = jerseyRequest.resolveProperty(NettyClientProperties.MAX_REDIRECTS, DEFAULT_MAX_REDIRECTS);
         this.connector = connector;
+
+        final NettyHttpRedirectController customRedirectController = jerseyRequest
+                .resolveProperty(NettyClientProperties.HTTP_REDIRECT_CONTROLLER, NettyHttpRedirectController.class);
+        this.redirectController = customRedirectController == null ? new NettyHttpRedirectController() : customRedirectController;
     }
 
     @Override
@@ -142,22 +143,24 @@ protected void notifyResponse() {
                       } else {
                           ClientRequest newReq = new ClientRequest(jerseyRequest);
                           newReq.setUri(newUri);
-                          restrictRedirectRequest(newReq, cr);
-
-                          final NettyConnector newConnector = new NettyConnector(newReq.getClient());
-                          newConnector.execute(newReq, redirectUriHistory, new CompletableFuture<ClientResponse>() {
-                              @Override
-                              public boolean complete(ClientResponse value) {
-                                  newConnector.close();
-                                  return responseAvailable.complete(value);
-                              }
-
-                              @Override
-                              public boolean completeExceptionally(Throwable ex) {
-                                  newConnector.close();
-                                  return responseAvailable.completeExceptionally(ex);
-                              }
-                          });
+                          if (redirectController.prepareRedirect(newReq, cr)) {
+                              final NettyConnector newConnector = new NettyConnector(newReq.getClient());
+                              newConnector.execute(newReq, redirectUriHistory, new CompletableFuture<ClientResponse>() {
+                                  @Override
+                                  public boolean complete(ClientResponse value) {
+                                      newConnector.close();
+                                      return responseAvailable.complete(value);
+                                  }
+
+                                  @Override
+                                  public boolean completeExceptionally(Throwable ex) {
+                                      newConnector.close();
+                                      return responseAvailable.completeExceptionally(ex);
+                                  }
+                              });
+                          } else {
+                              responseAvailable.complete(cr);
+                          }
                       }
                   } catch (IllegalArgumentException e) {
                       responseAvailable.completeExceptionally(
@@ -226,8 +229,6 @@ public String getReasonPhrase() {
         }
     }
 
-
-
     @Override
     public void exceptionCaught(ChannelHandlerContext ctx, final Throwable cause) {
         responseDone.completeExceptionally(cause);
@@ -243,53 +244,6 @@ public void userEventTriggered(ChannelHandlerContext ctx, Object evt) throws Exc
        }
     }
 
-    /*
-     * RFC 9110 Section 15.4
-     * https://httpwg.org/specs/rfc9110.html#rfc.section.15.4
-     */
-    private void restrictRedirectRequest(ClientRequest newRequest, ClientResponse response) {
-        final MultivaluedMap<String, Object> headers = newRequest.getHeaders();
-        final Boolean keepMethod = newRequest.resolveProperty(NettyClientProperties.PRESERVE_METHOD_ON_REDIRECT, Boolean.TRUE);
-
-        if (Boolean.FALSE.equals(keepMethod) && newRequest.getMethod().equals(HttpMethod.POST)) {
-            switch (response.getStatus()) {
-                case 301 /* MOVED PERMANENTLY */:
-                case 302 /* FOUND */:
-                    removeContentHeaders(headers);
-                    newRequest.setMethod(HttpMethod.GET);
-                    newRequest.setEntity(null);
-                    break;
-            }
-        }
-
-        for (final Iterator<Map.Entry<String, List<Object>>> it = headers.entrySet().iterator(); it.hasNext(); ) {
-            final Map.Entry<String, List<Object>> entry = it.next();
-            if (ProxyHeaders.INSTANCE.test(entry.getKey())) {
-                it.remove();
-            }
-        }
-
-        headers.remove(HttpHeaders.IF_MATCH);
-        headers.remove(HttpHeaders.IF_NONE_MATCH);
-        headers.remove(HttpHeaders.IF_MODIFIED_SINCE);
-        headers.remove(HttpHeaders.IF_UNMODIFIED_SINCE);
-        headers.remove(HttpHeaders.AUTHORIZATION);
-        headers.remove(HttpHeaders.REFERER);
-        headers.remove(HttpHeaders.COOKIE);
-    }
-
-    private void removeContentHeaders(MultivaluedMap<String, Object> headers) {
-        for (final Iterator<Map.Entry<String, List<Object>>> it = headers.entrySet().iterator(); it.hasNext(); ) {
-            final Map.Entry<String, List<Object>> entry = it.next();
-            final String lowName = entry.getKey().toLowerCase(Locale.ROOT);
-            if (lowName.startsWith("content-")) {
-                it.remove();
-            }
-        }
-        headers.remove(HttpHeaders.LAST_MODIFIED);
-        headers.remove(HttpHeaders.TRANSFER_ENCODING);
-    }
-
     /* package */ static class ProxyHeaders implements Predicate<String> {
         static final ProxyHeaders INSTANCE = new ProxyHeaders();
         private static final String HOST = HttpHeaders.HOST.toLowerCase(Locale.ROOT);

connectors/netty-connector/src/main/java/org/glassfish/jersey/netty/connector/NettyClientProperties.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020, 2024 Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2020, 2025 Oracle and/or its affiliates. All rights reserved.
  *
  * This program and the accompanying materials are made available under the
  * terms of the Eclipse Public License v. 2.0, which is available at
@@ -55,6 +55,15 @@ public class NettyClientProperties {
      */
     public static final String FILTER_HEADERS_FOR_PROXY = "jersey.config.client.filter.headers.proxy";
 
+    /**
+     * <p>
+     *     The implementation of custom {@link NettyHttpRedirectController} redirect logic.
+     * </p>
+     *
+     * @since 2.47
+     */
+    public static final String HTTP_REDIRECT_CONTROLLER = "jersey.config.client.netty.http.redirect.controller";
+
     /**
      * <p>
      *    This property determines the number of seconds the idle connections are kept in the pool before pruned.

connectors/netty-connector/src/main/java/org/glassfish/jersey/netty/connector/NettyHttpRedirectController.java

@@ -0,0 +1,102 @@
+/*
+ * Copyright (c) 2025 Oracle and/or its affiliates. All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v. 2.0, which is available at
+ * http://www.eclipse.org/legal/epl-2.0.
+ *
+ * This Source Code may also be made available under the following Secondary
+ * Licenses when the conditions for such availability set forth in the
+ * Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
+ * version 2 with the GNU Classpath Exception, which is available at
+ * https://www.gnu.org/software/classpath/license.html.
+ *
+ * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
+ */
+
+package org.glassfish.jersey.netty.connector;
+
+import org.glassfish.jersey.client.ClientRequest;
+import org.glassfish.jersey.client.ClientResponse;
+import org.glassfish.jersey.http.HttpHeaders;
+
+import javax.ws.rs.HttpMethod;
+import javax.ws.rs.core.MultivaluedMap;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Locale;
+import java.util.Map;
+
+/**
+ * The HTTP Redirect logic implementation for Netty Connector.
+ *
+ * @since 2.47
+ */
+public class NettyHttpRedirectController {
+
+    /**
+     * Configure the HTTP request after HTTP Redirect response has been received.
+     * By default, the HTTP POST request is transformed into HTTP GET for status 301 & 302.
+     * Also, HTTP Headers described by RFC 9110 Section 15.4 are removed from the new HTTP Request.
+     *
+     * @param request The new {@link ClientRequest} to be sent to the redirected URI.
+     * @param response The original HTTP redirect {@link ClientResponse} received.
+     * @return {@code true} when the new request should be sent.
+     */
+    public boolean prepareRedirect(ClientRequest request, ClientResponse response) {
+        final Boolean keepMethod = request.resolveProperty(NettyClientProperties.PRESERVE_METHOD_ON_REDIRECT, Boolean.TRUE);
+
+        if (Boolean.FALSE.equals(keepMethod) && request.getMethod().equals(HttpMethod.POST)) {
+            switch (response.getStatus()) {
+                case 301 /* MOVED PERMANENTLY */:
+                case 302 /* FOUND */:
+                    removeContentHeaders(request.getHeaders());
+                    request.setMethod(HttpMethod.GET);
+                    request.setEntity(null);
+                    break;
+            }
+        }
+
+        restrictRequestHeaders(request, response);
+        return true;
+    }
+
+    /**
+     * RFC 9110 Section 15.4 defines the HTTP headers that should be removed from the redirected request.
+     * https://httpwg.org/specs/rfc9110.html#rfc.section.15.4.
+     *
+     * @param request the new request to a new URI location.
+     * @param response the HTTP redirect response.
+     */
+    protected void restrictRequestHeaders(ClientRequest request, ClientResponse response) {
+        final MultivaluedMap<String, Object> headers = request.getHeaders();
+
+        for (final Iterator<Map.Entry<String, List<Object>>> it = headers.entrySet().iterator(); it.hasNext(); ) {
+            final Map.Entry<String, List<Object>> entry = it.next();
+            if (JerseyClientHandler.ProxyHeaders.INSTANCE.test(entry.getKey())) {
+                it.remove();
+            }
+        }
+
+        headers.remove(HttpHeaders.IF_MATCH);
+        headers.remove(HttpHeaders.IF_NONE_MATCH);
+        headers.remove(HttpHeaders.IF_MODIFIED_SINCE);
+        headers.remove(HttpHeaders.IF_UNMODIFIED_SINCE);
+        headers.remove(HttpHeaders.AUTHORIZATION);
+        headers.remove(HttpHeaders.REFERER);
+        headers.remove(HttpHeaders.COOKIE);
+    }
+
+    private void removeContentHeaders(MultivaluedMap<String, Object> headers) {
+        for (final Iterator<Map.Entry<String, List<Object>>> it = headers.entrySet().iterator(); it.hasNext(); ) {
+            final Map.Entry<String, List<Object>> entry = it.next();
+            final String lowName = entry.getKey().toLowerCase(Locale.ROOT);
+            if (lowName.startsWith("content-")) {
+                it.remove();
+            }
+        }
+        headers.remove(HttpHeaders.LAST_MODIFIED);
+        headers.remove(HttpHeaders.TRANSFER_ENCODING);
+    }
+
+}

connectors/netty-connector/src/test/java/org/glassfish/jersey/netty/connector/CustomRedirectControllerTest.java

@@ -0,0 +1,94 @@
+/*
+ * Copyright (c) 2025 Oracle and/or its affiliates. All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v. 2.0, which is available at
+ * http://www.eclipse.org/legal/epl-2.0.
+ *
+ * This Source Code may also be made available under the following Secondary
+ * Licenses when the conditions for such availability set forth in the
+ * Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
+ * version 2 with the GNU Classpath Exception, which is available at
+ * https://www.gnu.org/software/classpath/license.html.
+ *
+ * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
+ */
+
+package org.glassfish.jersey.netty.connector;
+
+import org.glassfish.jersey.client.ClientConfig;
+import org.glassfish.jersey.client.ClientRequest;
+import org.glassfish.jersey.client.ClientResponse;
+import org.glassfish.jersey.http.HttpHeaders;
+import org.glassfish.jersey.server.ResourceConfig;
+import org.glassfish.jersey.test.JerseyTest;
+import org.hamcrest.MatcherAssert;
+import org.hamcrest.Matchers;
+import org.junit.jupiter.api.Test;
+
+import javax.ws.rs.GET;
+import javax.ws.rs.POST;
+import javax.ws.rs.Path;
+import javax.ws.rs.client.Entity;
+import javax.ws.rs.core.Application;
+import javax.ws.rs.core.Context;
+import javax.ws.rs.core.MediaType;
+import javax.ws.rs.core.Response;
+import javax.ws.rs.core.UriInfo;
+
+public class CustomRedirectControllerTest extends JerseyTest {
+    private static final String REDIRECTED = "redirected";
+
+    @Path("/")
+    public static class CustomRedirectControllerTestResource {
+        @Context
+        UriInfo uriInfo;
+
+        @GET
+        @Path(REDIRECTED)
+        public String redirected() {
+            return REDIRECTED;
+        }
+
+        @POST
+        @Path("doRedirect")
+        public Response doRedirect(int status) {
+            return Response.status(status)
+                    .header(HttpHeaders.LOCATION, uriInfo.getBaseUri().toString() + "redirected")
+                    .build();
+        }
+    }
+
+    @Override
+    protected Application configure() {
+        return new ResourceConfig(CustomRedirectControllerTestResource.class);
+    }
+
+    @Override
+    protected void configureClient(ClientConfig config) {
+        config.connectorProvider(new NettyConnectorProvider());
+    }
+
+    @Test
+    public void testRedirectToGET() {
+        try (Response r = target("doRedirect")
+                .property(NettyClientProperties.PRESERVE_METHOD_ON_REDIRECT, false)
+                .request().post(Entity.entity(301, MediaType.TEXT_PLAIN_TYPE))) {
+            MatcherAssert.assertThat(r.getStatus(), Matchers.is(200));
+            MatcherAssert.assertThat(r.readEntity(String.class), Matchers.is(REDIRECTED));
+        }
+    }
+
+    @Test
+    public void testNotRedirected() {
+        try (Response response = target("doRedirect")
+                .property(NettyClientProperties.HTTP_REDIRECT_CONTROLLER, new NettyHttpRedirectController() {
+                    @Override
+                    public boolean prepareRedirect(ClientRequest request, ClientResponse response) {
+                        return false;
+                    }
+                }).request().post(Entity.entity(301, MediaType.TEXT_PLAIN_TYPE))) {
+            MatcherAssert.assertThat(response.getStatus(), Matchers.is(301));
+        }
+    }
+}

docs/src/main/docbook/appendix-properties.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <!--
 
-    Copyright (c) 2013, 2024 Oracle and/or its affiliates. All rights reserved.
+    Copyright (c) 2013, 2025 Oracle and/or its affiliates. All rights reserved.
 
     This program and the accompanying materials are made available under the
     terms of the Eclipse Public License v. 2.0, which is available at
@@ -2172,6 +2172,16 @@
                     </row>
                 </thead>
                 <tbody>
+                    <row>
+                        <entry>&jersey.netty.NettyClientProperties.HTTP_REDIRECT_CONTROLLER;</entry>
+                        <entry><literal>jersey.config.client.netty.http.redirect.controller</literal></entry>
+                        <entry>
+                            <para>
+                                The implementation of custom &jersey.netty.NettyHttpRedirectController; redirect logic.
+                                <literal>Since 2.47</literal>
+                            </para>
+                        </entry>
+                    </row>
                     <row>
                         <entry>&jersey.netty.NettyClientProperties.FILTER_HEADERS_FOR_PROXY;</entry>
                         <entry><literal>jersey.config.client.filter.headers.proxy</literal></entry>