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torben |
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package dk.thoerup.websocket;
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import java.io.IOException;
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import java.util.HashMap;
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import java.util.Random;
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import javax.websocket.CloseReason;
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import javax.websocket.EndpointConfig;
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import javax.websocket.OnClose;
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import javax.websocket.OnError;
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import javax.websocket.OnMessage;
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import javax.websocket.OnOpen;
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import javax.websocket.Session;
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import javax.websocket.server.ServerEndpoint;
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@ServerEndpoint("/wstest")
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public class AnnotatedSocket {
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static private HashMap<String, Session> sessions = new HashMap<String,Session>();
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static private HashMap<String, String> sessionNicks = new HashMap<String,String>();
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private static Random rand = new Random();
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@OnOpen
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public void open(Session session, EndpointConfig conf) {
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String guestNick = "Guest-" + rand.nextInt();
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broadcastMessage( "*** " + guestNick + " has joined the chat");
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try {
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session.getBasicRemote().sendText( "Welcome " + guestNick);
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StringBuilder sb = new StringBuilder();
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for(String n : sessionNicks.values() ) {
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sb.append(n).append(" ");
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}
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session.getBasicRemote().sendText( "*** On-line guests: " + sb.toString() );
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} catch (IOException e) {
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System.out.println("Error sending welcome messages " + e.getMessage() );
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}
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sessionNicks.put(session.getId(), guestNick);
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sessions.put(session.getId(), session);
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}
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@OnError
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public void error(Session session, Throwable error) {
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}
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@OnClose
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public void close(Session session, CloseReason reason) {
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String nick = sessionNicks.get( session.getId() );
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sessions.remove(session.getId());
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sessionNicks.remove(session.getId());
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broadcastMessage( "*** " + nick + " has left the chat");
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}
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@OnMessage
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public void onMessage(Session session, String msg) {
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String parts[] = msg.split("#", 2);
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String cmd = parts[0];
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switch (cmd) {
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case "CHAT":
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String messagePart = parts[1];
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String nick = sessionNicks.get(session.getId() );
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broadcastMessage(nick + "> " + messagePart);
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break;
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case "NICK":
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String oldNick = sessionNicks.get( session.getId() );
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String newNick = parts[1];
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sessionNicks.put(session.getId(), newNick);
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broadcastMessage( "*** " + oldNick + " switched nick to " + newNick);
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break;
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}
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}
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private void broadcastMessage(String msg) {
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try {
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for(Session ses: sessions.values() ) {
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ses.getBasicRemote().sendText( msg);
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}
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} catch (IOException e) {
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System.out.println("Error broadcasting message " + e.getMessage() );
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}
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}
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}
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