| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF 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.apache.unomi.web; |
| |
| import javax.servlet.ServletResponse; |
| import javax.servlet.http.HttpServletRequest; |
| import javax.servlet.http.HttpServletResponse; |
| import java.io.IOException; |
| |
| public class HttpUtils { |
| |
| /** |
| * Setup CORS headers as soon as possible so that errors are not misconstrued on the client for CORS errors |
| * @param httpServletRequest |
| * @param response |
| * @throws IOException |
| */ |
| public static void setupCORSHeaders(HttpServletRequest httpServletRequest, ServletResponse response) throws IOException { |
| if (response instanceof HttpServletResponse) { |
| HttpServletResponse httpServletResponse = (HttpServletResponse) response; |
| if (httpServletRequest != null && httpServletRequest.getHeader("Origin") != null) { |
| httpServletResponse.setHeader("Access-Control-Allow-Origin", httpServletRequest.getHeader("Origin")); |
| } else { |
| httpServletResponse.setHeader("Access-Control-Allow-Origin", "*"); |
| } |
| httpServletResponse.setHeader("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept"); |
| httpServletResponse.setHeader("Access-Control-Allow-Credentials", "true"); |
| httpServletResponse.setHeader("Access-Control-Allow-Methods", "OPTIONS, POST, GET"); |
| } |
| } |
| } |