jj.http.server.websocket.WebSocketRequestChecker.java Source code

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Here is the source code for jj.http.server.websocket.WebSocketRequestChecker.java

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/*
 *    Copyright 2012 Jason Miller
 *
 * Licensed 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 jj.http.server.websocket;

import javax.inject.Singleton;

import io.netty.handler.codec.http.FullHttpRequest;
import io.netty.handler.codec.http.HttpHeaders;
import io.netty.handler.codec.http.HttpMethod;
import jj.http.uri.URIMatch;

/**
 * @author jason
 *
 */
@Singleton
public class WebSocketRequestChecker {

    private static final String SOCKET = "socket";

    private boolean isWebSocketURI(final FullHttpRequest request) {
        URIMatch uriMatch = new URIMatch(request.getUri());
        return SOCKET.equals(uriMatch.extension) && uriMatch.sha1 != null;
    }

    private boolean isUpgradeRequest(final FullHttpRequest request) {
        return request.headers().contains(HttpHeaders.Names.CONNECTION) && request.headers()
                .get(HttpHeaders.Names.CONNECTION).toLowerCase().contains(HttpHeaders.Values.UPGRADE.toLowerCase());
    }

    public boolean isWebSocketRequest(final FullHttpRequest request) {

        return HttpMethod.GET.equals(request.getMethod()) && isUpgradeRequest(request)
                && HttpHeaders.Values.WEBSOCKET.equalsIgnoreCase(request.headers().get(HttpHeaders.Names.UPGRADE))
                && isWebSocketURI(request);
    }

}