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/*
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2011-12-09 06:18:34 +01:00
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* Copyright 2011 The Netty Project
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*
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2011-12-09 06:18:34 +01:00
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* The Netty Project licenses this file to you under the Apache License,
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* version 2.0 (the "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at:
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2011-09-26 14:51:15 +02:00
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*
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2011-12-09 06:18:34 +01:00
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* http://www.apache.org/licenses/LICENSE-2.0
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2011-09-26 14:51:15 +02:00
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*/
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2011-12-09 04:38:59 +01:00
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package io.netty.handler.codec.http.websocketx;
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2011-12-11 00:47:07 +01:00
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import io.netty.channel.Channel;
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2011-12-09 04:38:59 +01:00
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import io.netty.handler.codec.http.DefaultHttpResponse;
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import io.netty.handler.codec.http.HttpRequest;
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import io.netty.handler.codec.http.HttpResponse;
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import io.netty.handler.codec.http.HttpResponseStatus;
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import io.netty.handler.codec.http.HttpVersion;
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import io.netty.handler.codec.http.HttpHeaders.Names;
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/**
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* Instances the appropriate handshake class to use for clients
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*/
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public class WebSocketServerHandshakerFactory {
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private final String webSocketURL;
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private final String subProtocols;
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private boolean allowExtensions = false;
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2011-10-16 08:01:24 +02:00
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2011-11-28 23:45:13 +01:00
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/**
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* Constructor specifying the destination web socket location
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*
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* @param webSocketURL
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* URL for web socket communications. e.g "ws://myhost.com/mypath". Subsequent web socket frames will be
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* sent to this URL.
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* @param subProtocols
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* CSV of supported protocols. Null if sub protocols not supported.
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* @param allowExtensions
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* Allow extensions to be used in the reserved bits of the web socket frame
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*/
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public WebSocketServerHandshakerFactory(String webSocketURL, String subProtocols, boolean allowExtensions) {
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this.webSocketURL = webSocketURL;
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this.subProtocols = subProtocols;
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this.allowExtensions = allowExtensions;
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}
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/**
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* Instances a new handshaker
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*
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* @return A new WebSocketServerHandshaker for the requested web socket version. Null if web socket version is not
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* supported.
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*/
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public WebSocketServerHandshaker newHandshaker(HttpRequest req) {
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String version = req.getHeader(Names.SEC_WEBSOCKET_VERSION);
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if (version != null) {
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if (version.equals(WebSocketVersion.V13.toHttpHeaderValue())) {
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// Version 13 of the wire protocol - RFC 6455 (version 17 of the draft hybi specification).
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return new WebSocketServerHandshaker13(webSocketURL, subProtocols, this.allowExtensions);
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} else if (version.equals(WebSocketVersion.V08.toHttpHeaderValue())) {
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// Version 8 of the wire protocol - version 10 of the draft hybi specification.
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return new WebSocketServerHandshaker08(webSocketURL, subProtocols, this.allowExtensions);
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} else {
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return null;
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}
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} else {
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// Assume version 00 where version header was not specified
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return new WebSocketServerHandshaker00(webSocketURL, subProtocols);
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}
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}
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/**
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* Return that we need cannot not support the web socket version
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*
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* @param channel
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* Channel
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*/
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public void sendUnsupportedWebSocketVersionResponse(Channel channel) {
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HttpResponse res = new DefaultHttpResponse(HttpVersion.HTTP_1_1, new HttpResponseStatus(101,
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"Switching Protocols"));
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res.setStatus(HttpResponseStatus.UPGRADE_REQUIRED);
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2011-12-15 06:42:25 +01:00
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res.setHeader(Names.SEC_WEBSOCKET_VERSION, WebSocketVersion.V13.toHttpHeaderValue());
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channel.write(res);
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}
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}
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