优化代码,性能暴涨
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package org.kne.cloud.network;
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import java.io.ByteArrayInputStream;
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import java.io.ByteArrayOutputStream;
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import java.io.Closeable;
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import java.io.DataInputStream;
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import java.io.DataOutputStream;
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import java.io.IOException;
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import java.net.DatagramPacket;
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import java.net.InetAddress;
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import java.net.InetSocketAddress;
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import java.net.MulticastSocket;
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import java.net.NetworkInterface;
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import java.net.NoRouteToHostException;
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import java.net.SocketException;
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import java.net.UnknownHostException;
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import java.util.Enumeration;
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import java.util.HashSet;
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import java.util.Iterator;
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import java.util.List;
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import java.util.Set;
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import java.util.function.Consumer;
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public class IPMulticastDiscovery extends Thread implements Closeable, AutoCloseable {
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private MulticastSocket soc;
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private NetworkInterface ninterface;
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private volatile boolean closed = false;
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private InetSocketAddress group;
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private InetSocketAddress bind;
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private int type;
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private List<MultipurposeSocketAddress> msas;
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private volatile Consumer<MultipurposeSocketAddress> con;
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public NetworkInterface getNinterface() {
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return ninterface;
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}
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public InetSocketAddress getGroup() {
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return group;
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}
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public InetSocketAddress getBind() {
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return bind;
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}
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public Consumer<MultipurposeSocketAddress> getCon() {
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return con;
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}
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public void setCon(Consumer<MultipurposeSocketAddress> con) {
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this.con = con;
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}
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public IPMulticastDiscovery(InetSocketAddress bind, InetSocketAddress group, NetworkInterface ninterface,
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List<MultipurposeSocketAddress> msas) throws IOException {
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soc = new MulticastSocket(bind);
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soc.joinGroup(group, ninterface);
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this.bind = bind;
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this.group = group;
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this.ninterface = ninterface;
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this.msas = msas;
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}
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@Override
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public void run() {
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Thread.currentThread().setName("线路发现线程");
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ThreadTool.makeVDaemonThreadIfSupport("线路通知线程", () -> {
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try {
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while (!closed) {
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HashSet<MultipurposeSocketAddress> s = new HashSet<MultipurposeSocketAddress>();
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for (Iterator<MultipurposeSocketAddress> iterator = msas.iterator(); iterator.hasNext();) {
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MultipurposeSocketAddress multipurposeSocketAddress = (MultipurposeSocketAddress) iterator
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.next();
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MultipurposeSocketAddress mpsa = new MultipurposeSocketAddress(
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multipurposeSocketAddress.getType(), "::0", multipurposeSocketAddress.getPort());
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try {
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if (s.add(mpsa)) {
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boolean bf = true;
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Enumeration<InetAddress> ei = ninterface.getInetAddresses();
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while (ei.hasMoreElements()) {
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InetAddress inetAddress = (InetAddress) ei.nextElement();
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if (inetAddress.equals(multipurposeSocketAddress.getInetAddress())) {
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bf = false;
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break;
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}
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}
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if (bf) {
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continue;
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}
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ByteArrayOutputStream baos = new ByteArrayOutputStream();
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DataOutputStream dops = new DataOutputStream(baos);
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dops.writeInt(multipurposeSocketAddress.getPort());
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dops.writeUTF(multipurposeSocketAddress.getType());
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dops.close();
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byte[] b = baos.toByteArray();
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DatagramPacket dp = new DatagramPacket(b, b.length, group);
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soc.send(dp);
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}
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} catch (NoRouteToHostException|UnknownHostException e) {
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}
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}
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Thread.sleep(10000L);
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}
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} catch (IOException e) {
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e.printStackTrace();
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} catch (InterruptedException e) {
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// TODO 自动生成的 catch 块
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e.printStackTrace();
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} finally {
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try {
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close();
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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}).start();
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try {
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loop:while (!closed) {
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byte[] b = new byte[65535];
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DatagramPacket dp = new DatagramPacket(b, b.length);
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soc.receive(dp);
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ByteArrayInputStream bis = new ByteArrayInputStream(b, 0, dp.getLength());
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DataInputStream dis = new DataInputStream(bis);
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int port = dis.readInt();
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String type = dis.readUTF();
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dis.close();
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MultipurposeSocketAddress mpsa = new MultipurposeSocketAddress(type, dp.getAddress().getHostAddress(),
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port);
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//System.out.println(mpsa);
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Enumeration<InetAddress> ei = ninterface.getInetAddresses();
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while (ei.hasMoreElements()) {
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InetAddress inetAddress = (InetAddress) ei.nextElement();
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if (inetAddress.equals(mpsa.getInetAddress())) {
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continue loop;
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}
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}
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if (con != null) {
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con.accept(mpsa);
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}
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}
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} catch (IOException e) {
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System.out.println(bind + " " + group + " " + ninterface);
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e.printStackTrace();
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} finally {
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try {
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close();
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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}
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@Override
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public void close() throws IOException {
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soc.close();
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closed = true;
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}
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public boolean isClosed() {
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return closed;
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}
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}
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