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Signed-off-by: Maxim Nesen <maxim.nesen@oracle.com>
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...ector/src/main/java/org/glassfish/jersey/netty/connector/JerseyExpectContinueHandler.java
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| /* | ||
| * Copyright (c) 2023 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 | ||
| */ | ||
|
|
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| package org.glassfish.jersey.netty.connector; | ||
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|
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| import io.netty.channel.Channel; | ||
| import io.netty.channel.ChannelFuture; | ||
| import io.netty.channel.ChannelHandlerContext; | ||
| import io.netty.channel.ChannelInboundHandlerAdapter; | ||
| import io.netty.handler.codec.http.DefaultFullHttpRequest; | ||
| import io.netty.handler.codec.http.HttpRequest; | ||
| import io.netty.handler.codec.http.HttpResponse; | ||
| import io.netty.handler.codec.http.HttpResponseStatus; | ||
| import io.netty.handler.codec.http.HttpUtil; | ||
| import org.glassfish.jersey.client.ClientRequest; | ||
|
|
||
| import javax.ws.rs.ProcessingException; | ||
| import java.util.Arrays; | ||
| import java.util.List; | ||
| import java.util.concurrent.CompletableFuture; | ||
| import java.util.concurrent.ExecutionException; | ||
| import java.util.concurrent.TimeUnit; | ||
| import java.util.concurrent.TimeoutException; | ||
|
|
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| public class JerseyExpectContinueHandler extends ChannelInboundHandlerAdapter { | ||
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| private boolean isExpected; | ||
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| private static final List<HttpResponseStatus> statusesToBeConsidered = Arrays.asList(HttpResponseStatus.CONTINUE, | ||
| HttpResponseStatus.UNAUTHORIZED, HttpResponseStatus.EXPECTATION_FAILED, | ||
| HttpResponseStatus.METHOD_NOT_ALLOWED, HttpResponseStatus.REQUEST_ENTITY_TOO_LARGE); | ||
|
|
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| private CompletableFuture<HttpResponseStatus> expectedFuture = new CompletableFuture<>(); | ||
|
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| @Override | ||
| public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception { | ||
| if (isExpected && msg instanceof HttpResponse) { | ||
| final HttpResponse response = (HttpResponse) msg; | ||
| if (statusesToBeConsidered.contains(response.status())) { | ||
| expectedFuture.complete(response.status()); | ||
| } | ||
| if (!HttpResponseStatus.CONTINUE.equals(response.status())) { | ||
| ctx.fireChannelRead(msg); //bypass the message to the next handler in line | ||
| } else { | ||
| ctx.pipeline().remove(this); | ||
| } | ||
| } else { | ||
| if (!isExpected) { | ||
| ctx.pipeline().remove(this); | ||
| } | ||
| ctx.fireChannelRead(msg); //bypass the message to the next handler in line | ||
| } | ||
| } | ||
|
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| CompletableFuture<HttpResponseStatus> processExpect100ContinueRequest(HttpRequest nettyRequest, | ||
| ClientRequest jerseyRequest, | ||
| Channel ch, | ||
| Integer timeout) | ||
| throws InterruptedException, ExecutionException, TimeoutException { | ||
| //check for 100-Continue presence/availability | ||
| final Expect100ContinueConnectorExtension expect100ContinueExtension | ||
| = new Expect100ContinueConnectorExtension(); | ||
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| final DefaultFullHttpRequest nettyRequestHeaders = | ||
| new DefaultFullHttpRequest(nettyRequest.protocolVersion(), nettyRequest.method(), nettyRequest.uri()); | ||
| nettyRequestHeaders.headers().setAll(nettyRequest.headers()); | ||
| //If Expect:100-continue feature is enabled and client supports it, the nettyRequestHeaders will be | ||
| //enriched with the 'Expect:100-continue' header. | ||
| expect100ContinueExtension.invoke(jerseyRequest, nettyRequestHeaders); | ||
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| final ChannelFuture expect100ContinueFuture = (HttpUtil.is100ContinueExpected(nettyRequestHeaders)) | ||
| // Send only head of the HTTP request enriched with Expect:100-continue header. | ||
| ? ch.writeAndFlush(nettyRequestHeaders) | ||
| // Expect:100-Continue either is not supported or is turned off | ||
| : null; | ||
| isExpected = expect100ContinueFuture != null; | ||
| if (!isExpected) { | ||
| ch.pipeline().remove(this); | ||
| } else { | ||
| final HttpResponseStatus status = expectedFuture | ||
| .get(timeout, TimeUnit.MILLISECONDS); | ||
|
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| processExpectationStatus(status); | ||
| } | ||
| return expectedFuture; | ||
| } | ||
|
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| private void processExpectationStatus(HttpResponseStatus status) | ||
| throws TimeoutException { | ||
| if (!statusesToBeConsidered.contains(status)) { | ||
| throw new ProcessingException(LocalizationMessages | ||
| .UNEXPECTED_VALUE_FOR_EXPECT_100_CONTINUE_STATUSES(status.code()), null); | ||
| } | ||
| if (!expectedFuture.isDone() || HttpResponseStatus.EXPECTATION_FAILED.equals(status)) { | ||
| isExpected = false; | ||
| throw new TimeoutException(); // continue without expectations | ||
| } | ||
| if (!HttpResponseStatus.CONTINUE.equals(status)) { | ||
| throw new ProcessingException(LocalizationMessages | ||
| .UNEXPECTED_VALUE_FOR_EXPECT_100_CONTINUE_STATUSES(status.code()), null); | ||
| } | ||
| } | ||
|
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| boolean isExpected() { | ||
| return isExpected; | ||
| } | ||
| } |
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