forked from tadglines/Socket.IO-Java
/
JSONPPollingTransport.java
88 lines (74 loc) · 3.25 KB
/
JSONPPollingTransport.java
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/**
* The MIT License
* Copyright (c) 2010 Tad Glines
*
* Contributors: Ovea.com, Mycila.com
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package com.glines.socketio.server.transport;
import java.io.IOException;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.glines.socketio.server.SocketIOFrame;
import com.glines.socketio.server.SocketIOSession;
public class JSONPPollingTransport extends XHRTransport {
public static final String TRANSPORT_NAME = "jsonp-polling";
private long jsonpIndex = -1;
protected class XHRPollingSessionHelper extends JettyXHRSessionHelper {
XHRPollingSessionHelper(SocketIOSession session, int bufferSize, int maxIdleTime) {
super(session, false, bufferSize, maxIdleTime);
}
protected void startSend(HttpServletResponse response) throws IOException {
response.setContentType("text/javascript; charset=UTF-8");
response.getOutputStream().print("io.JSONP["+ jsonpIndex +"]._('");
}
@Override
protected void writeData(ServletResponse response, String data) throws IOException {
response.getOutputStream().print(data);
}
protected void finishSend(ServletResponse response) throws IOException {
response.getOutputStream().print("');");
response.flushBuffer();
}
protected void customConnect(HttpServletRequest request,
HttpServletResponse response) throws IOException {
String path = request.getPathInfo();
if (path.startsWith("/")) path = path.substring(1);
String[] parts = path.split("/");
if (parts.length >= 4) {
jsonpIndex = Integer.parseInt(parts[3]);
}
startSend(response);
writeData(response, SocketIOFrame.encode(SocketIOFrame.FrameType.SESSION_ID, 0, session.getSessionId()));
writeData(response, SocketIOFrame.encode(SocketIOFrame.FrameType.HEARTBEAT_INTERVAL, 0, "" + REQUEST_TIMEOUT));
}
}
public JSONPPollingTransport(int bufferSize, int maxIdleTime) {
super(bufferSize, maxIdleTime);
}
@Override
public String getName() {
return TRANSPORT_NAME;
}
protected XHRPollingSessionHelper createHelper(SocketIOSession session, int bufferSize, int maxIdleTime) {
return new XHRPollingSessionHelper(session, bufferSize, maxIdleTime);
}
}