Java tutorial
/* * Copyright (c) WSO2 Inc. (http://www.wso2.org) All Rights Reserved. * * WSO2 Inc. licenses this file to you under the Apache License, * Version 2.0 (the "License"); you may not use this file except * in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, * software distributed under the License is distributed on an * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * KIND, either express or implied. See the License for the * specific language governing permissions and limitations * under the License. * */ package org.wso2.carbon.mss.internal.router; import io.netty.channel.ChannelHandlerContext; import io.netty.channel.ChannelOutboundHandlerAdapter; import io.netty.channel.ChannelPromise; import io.netty.handler.codec.http.HttpResponse; /** * Test ChannelHandler that adds a default header to every response. */ public class TestChannelHandler extends ChannelOutboundHandlerAdapter { protected static final String HEADER_FIELD = "testHeaderField"; protected static final String HEADER_VALUE = "testHeaderValue"; /*@Override public void writeRequested(ChannelHandlerContext ctx, MessageEvent e) throws Exception { Object message = e.getMessage(); if (!(message instanceof HttpResponse)) { super.writeRequested(ctx, e); return; } HttpResponse response = (HttpResponse) message; response.addHeader(HEADER_FIELD, HEADER_VALUE); super.writeRequested(ctx, e); }*/ public void write(ChannelHandlerContext ctx, Object msg, ChannelPromise promise) { HttpResponse response = (HttpResponse) msg; response.headers().add(HEADER_FIELD, HEADER_VALUE); ctx.write(response, promise); } // @Override // protected void channelRead0(ChannelHandlerContext channelHandlerContext, HttpResponse response) throws Exception { // response.headers().add(HEADER_FIELD, HEADER_VALUE); // } }