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import java.io.IOException; |
import java.io.IOException; |
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import java.util.HashMap; |
import java.util.HashMap; |
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import java.util.Random; |
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import javax.websocket.CloseReason; |
import javax.websocket.CloseReason; |
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import javax.websocket.EndpointConfig; |
import javax.websocket.EndpointConfig; |
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@ServerEndpoint("/wstest") |
@ServerEndpoint("/wstest") |
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public class AnnotatedSocket { |
public class AnnotatedSocket { |
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static private HashMap<String, Session> sessions = new HashMap<String,Session>(); |
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 |
@OnOpen |
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public void open(Session session, EndpointConfig conf) { |
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); |
sessions.put(session.getId(), session); |
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} |
} |
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@OnError |
@OnError |
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@OnClose |
@OnClose |
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public void close(Session session, CloseReason reason) { |
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()); |
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 |
@OnMessage |
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public void onMessage(Session session, String msg) { |
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 { |
try { |
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for(Session ses: sessions.values() ) { |
for(Session ses: sessions.values() ) { |
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ses.getBasicRemote().sendText( session.getId() + " > " + msg); |
ses.getBasicRemote().sendText( msg); |
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} |
} |
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System.out.println("Returned msg: " + msg); |
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} catch (IOException e) { |
} catch (IOException e) { |
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System.out.println("Error returning message " + e.getMessage() ); |
System.out.println("Error broadcasting message " + e.getMessage() ); |
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} |
} |
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} |
} |
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} |
} |