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Copy pathJava231_ChatHandler.java
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86 lines (76 loc) · 1.82 KB
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package java0920_network;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.Socket;
import java.util.Enumeration;
import java.util.Vector;
public class Java231_ChatHandler implements Runnable {
Socket socket;
private DataInputStream dataIn;
private DataOutputStream dataOut;
private Thread th;
private static Vector handlers = new Vector<>();
public Java231_ChatHandler() {
}
public Java231_ChatHandler(Socket socket) {
this.socket = socket;
}
synchronized public void initStart() {
if (th == null) {
InputStream is;
OutputStream os;
try {
is = socket.getInputStream();
os = socket.getOutputStream();
dataIn = new DataInputStream(new BufferedInputStream(is));
dataOut = new DataOutputStream(new BufferedOutputStream(os));
th = new Thread(this);
th.start();
} catch (IOException e) {
e.printStackTrace();
}
}
}
@Override
public void run() {
handlers.addElement(this);
while (!Thread.interrupted()) {
try {
String message = dataIn.readUTF();
broadcast(message);
} catch (IOException e) {
e.printStackTrace();
}
}
}
public void broadcast(String message) {
Enumeration enu = handlers.elements();
while (enu.hasMoreElements()) {
Java231_ChatHandler handler = (Java231_ChatHandler) enu.nextElement();
try {
handler.dataOut.writeUTF(message);
handler.dataOut.flush();
} catch (IOException e) {
handler.stop();
}
}
}
synchronized public void stop() {
if (th != null) {
if (th != Thread.currentThread()) {
th.interrupt();
th = null;
try {
dataOut.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
}