Serveur socket multi client qui bloque sur le premier client
Bonjour,
Je suis entrain de réaliser un serveur socket , qui doit réceptionner les requests client et répondre à leurs demandes.
Mais mon serveur ne répond qu'au premier client , si je lance une deuxième socket client rien ne se passe.
Je suis vraiment bloqué :(
Voici mon code serveur :
Code:
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package com.cit.xDR.test;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.nio.ByteBuffer;
import java.nio.CharBuffer;
import java.nio.channels.SelectionKey;
import java.nio.channels.Selector;
import java.nio.channels.ServerSocketChannel;
import java.nio.channels.SocketChannel;
import java.nio.charset.Charset;
import java.util.HashMap;
import java.util.Iterator;
public class NIOEchoServer {
private ServerSocketChannel serverchannel ;
private Selector selector ;
private HashMap<SocketChannel,ByteBuffer> queuedWrites = new HashMap<SocketChannel,ByteBuffer>() ;
public static void main(String[] args) {
NIOEchoServer n = new NIOEchoServer() ;
n.run();
}
public void run() {
try {
serverchannel = ServerSocketChannel.open() ;
serverchannel.configureBlocking(false) ;
serverchannel.socket().bind(new InetSocketAddress("localhost",10081));
selector = Selector.open();
serverchannel.register(selector, SelectionKey.OP_ACCEPT) ;
while(true) {
try {
//System.out.println("Before Communicator");
//new Communicator(selector).start();
selector.select() ;
Iterator<SelectionKey> keysIterator = selector.selectedKeys().iterator() ;
while(keysIterator.hasNext()) {
SelectionKey key = keysIterator.next();
keysIterator.remove();
if (key.isAcceptable()) {
ServerSocketChannel ssc = (ServerSocketChannel)key.channel();
SocketChannel sc = ssc.accept();
sc.configureBlocking( false );
//Communicator com = new Communicator(key);
sc.register( selector, SelectionKey.OP_READ);
// com.start();
}
else if (key.isReadable()) {
SocketChannel sc = (SocketChannel)key.channel();
ByteBuffer readBuffer = ByteBuffer.allocate(8192);
int numread ;
while (true) {
// readBuffer.clear();
numread = sc.read( readBuffer );
if (numread <=0) {
break;
}
}
if (numread == -1) {
// Remote entity shut the socket down cleanly. Do the
// same from our end and cancel the channel.
key.channel().close();
key.cancel();
continue ;
}
System.out.println("Read :" + numread + " " + new String(readBuffer.array())) ;
readBuffer.flip() ;
queuedWrites.put(sc,readBuffer) ;
key.interestOps(SelectionKey.OP_WRITE) ;
} else if (key.isWritable()) {
SocketChannel sc = (SocketChannel)key.channel();
ByteBuffer towrite = queuedWrites.get(sc) ;
System.out.println("Echoing :" + new String(towrite.array())) ;
ByteBuffer resp = ByteBuffer.wrap("ACK".getBytes());
while (true) {
int n = sc.write(resp) ;
if (n == 0 || resp.remaining() == 0)
break ;
}
key.interestOps(SelectionKey.OP_READ) ;
}
}
} catch (Exception e) {
}
}
} catch(IOException e) {
System.out.println(e) ;
}
}
// private void waitForCalls() throws IOException {
// new Communicator(selector).start();
// }
} |
Mon code client :
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package com.cit.xDR.test;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.nio.ByteBuffer;
import java.nio.channels.SelectionKey;
import java.nio.channels.Selector;
import java.nio.channels.SocketChannel;
import java.util.ArrayDeque;
import java.util.Deque;
import java.util.Iterator;
public class NIOEchoClient {
private SocketChannel clientChannel ;
private Selector selector ;
public Deque<String> writeQueue = new ArrayDeque<String>() ;
private ByteBuffer readBuf = ByteBuffer.allocate(8192) ;
public static void main(String[] args) {
// TODO Auto-generated method stub
NIOEchoClient nm = new NIOEchoClient() ;
try {
nm.init() ;
nm.run();
} catch(IOException e) {
System.out.println(e) ;
}
}
public void init() throws IOException {
selector = Selector.open() ;
clientChannel = SocketChannel.open();
clientChannel.configureBlocking(false);
// Kick off connection establishment
clientChannel.connect(new InetSocketAddress("localhost", 10081));
clientChannel.register(selector, SelectionKey.OP_CONNECT) ;
}
public void run() {
int i = 0 ;
boolean done = false ;
try {
while(true) {
writeQueue.add("This is line " + i) ;
selector.select() ;
Iterator<SelectionKey> skeys = selector.selectedKeys().iterator() ;
while (skeys.hasNext()) {
SelectionKey key = (SelectionKey) skeys.next();
skeys.remove();
if (!key.isValid()) {
continue;
}
// Check what event is available and deal with it
if (key.isConnectable()) {
finishConnection(key);
} else if (key.isReadable()) {
read(key);
// done = true ;
} else if (key.isWritable()) {
write(key);
}
}
i++ ;
if (i == 10)
break ;
}
} catch(IOException e) {
System.out.println(e) ;
}
}
private void finishConnection(SelectionKey key) throws IOException {
clientChannel.finishConnect() ;
key.interestOps(SelectionKey.OP_WRITE) ;
}
private void write(SelectionKey key) throws IOException {
String toWrite = writeQueue.pollFirst() ;
System.out.println("writing :" + toWrite) ;
if (toWrite != null) {
ByteBuffer b ;
b = ByteBuffer.wrap(toWrite.getBytes()) ;
// b.flip();
while (true) {
int n = clientChannel.write(b) ;
if (n == 0 || b.remaining() == 0)
break ;
}
}
key.interestOps(SelectionKey.OP_READ) ;
}
public void read(SelectionKey key) throws IOException {
readBuf.clear() ;
while (true) {
// readBuffer.clear();
int numread = clientChannel.read( readBuf );
if (numread <=0) {
break;
}
}
System.out.println("Read Echo from server:" + new String(readBuf.array())) ;
key.interestOps(SelectionKey.OP_WRITE) ;
}
} |
Si quelqu'un peut m'aider , je serais vraiment reconnaissant !
