| /* |
| * 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.tinkerpop.gremlin.server.handler; |
| |
| import io.netty.handler.codec.http.HttpMessage; |
| |
| import static io.netty.handler.codec.http.HttpHeaders.Names.UPGRADE; |
| import static io.netty.handler.codec.http.HttpHeaders.Names.CONNECTION; |
| |
| /** |
| * A class to handle common WebSocket operations. |
| * |
| * @author Keith Lohnes lohnesk@gmail.com |
| */ |
| final class WebSocketHandlerUtil { |
| |
| static boolean isWebSocket(final HttpMessage msg) { |
| final String connectionHeader = msg.headers().get(CONNECTION); |
| final String upgradeHeader = msg.headers().get(UPGRADE); |
| return (null != connectionHeader && connectionHeader.equalsIgnoreCase("Upgrade")) || |
| (null != upgradeHeader && upgradeHeader.equalsIgnoreCase("WebSocket")); |
| } |
| } |