/*
* 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 websocket.echo;
import java.io.IOException;
import java.io.InputStream;
import java.io.Reader;
import javax.servlet.http.HttpServletRequest;
import org.apache.catalina.websocket.StreamInbound;
import org.apache.catalina.websocket.WebSocketServlet;
import org.apache.catalina.websocket.WsOutbound;
public class EchoStream extends WebSocketServlet {
private static final long serialVersionUID = 1L;
@Override
protected StreamInbound createWebSocketInbound(String subProtocol,
HttpServletRequest request) {
return new EchoStreamInbound();
}
private static final class EchoStreamInbound extends StreamInbound {
@Override
protected void onBinaryData(InputStream is) throws IOException {
// Simply echo the data to back to the client.
WsOutbound outbound = getWsOutbound();
int i = is.read();
while (i != -1) {
outbound.writeBinaryData(i);
i = is.read();
}
outbound.flush();
}
@Override
protected void onTextData(Reader r) throws IOException {
// Simply echo the data to back to the client.
WsOutbound outbound = getWsOutbound();
int c = r.read();
while (c != -1) {
outbound.writeTextData((char) c);
c = r.read();
}
outbound.flush();
}
}
}