Java low level networking project (#770)
* made changes to java reflection * removed redundant method makeSound in Animal abstract class * added project for play-framework article * added project for regex * changed regex project from own model to core-java * added project for routing in play * made changes to regex project * refactored code for REST API with Play project * refactored student store indexing to zero base * added unit tests, removed bad names * added NIO Selector project under core-java module * requested changes made
This commit is contained in:
Egima profile
Grzegorz Piwowarek
parent
4bae45370d
commit
89b50437be
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@ -0,0 +1,56 @@
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package com.baeldung.java.networking.cookies;
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import java.net.*;
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import java.util.List;
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public class PersistentCookieStore implements CookieStore, Runnable {
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CookieStore store;
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public PersistentCookieStore() {
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store = new CookieManager().getCookieStore();
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// deserialize cookies into store
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Runtime.getRuntime().addShutdownHook(new Thread(this));
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}
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@Override
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public void run() {
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// serialize cookies to persistent storage
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}
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@Override
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public void add(URI uri, HttpCookie cookie) {
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store.add(uri, cookie);
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}
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@Override
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public List<HttpCookie> get(URI uri) {
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// TODO Auto-generated method stub
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return null;
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}
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@Override
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public List<HttpCookie> getCookies() {
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// TODO Auto-generated method stub
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return null;
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}
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@Override
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public List<URI> getURIs() {
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// TODO Auto-generated method stub
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return null;
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}
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@Override
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public boolean remove(URI uri, HttpCookie cookie) {
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// TODO Auto-generated method stub
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return false;
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}
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@Override
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public boolean removeAll() {
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// TODO Auto-generated method stub
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return false;
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}
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}
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@ -0,0 +1,26 @@
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package com.baeldung.java.networking.cookies;
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import java.net.*;
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public class ProxyAcceptCookiePolicy implements CookiePolicy {
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String acceptedProxy;
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public ProxyAcceptCookiePolicy(String acceptedProxy) {
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this.acceptedProxy = acceptedProxy;
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}
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public boolean shouldAccept(URI uri, HttpCookie cookie) {
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String host;
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try {
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host = InetAddress.getByName(uri.getHost()).getCanonicalHostName();
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} catch (UnknownHostException e) {
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host = uri.getHost();
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}
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if (!HttpCookie.domainMatches(acceptedProxy, host)) {
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return false;
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}
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return CookiePolicy.ACCEPT_ORIGINAL_SERVER.shouldAccept(uri, cookie);
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}
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}
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package com.baeldung.java.networking.udp;
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import java.io.IOException;
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import java.net.DatagramPacket;
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import java.net.DatagramSocket;
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import java.net.InetAddress;
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public class EchoClient {
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private DatagramSocket socket;
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private InetAddress address;
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private byte[] buf;
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public EchoClient() {
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try {
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socket = new DatagramSocket();
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address = InetAddress.getByName("localhost");
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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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public String sendEcho(String msg) {
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DatagramPacket packet = null;
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try {
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buf=msg.getBytes();
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packet = new DatagramPacket(buf, buf.length, address, 4445);
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socket.send(packet);
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packet = new DatagramPacket(buf, buf.length);
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socket.receive(packet);
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} catch (IOException e) {
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e.printStackTrace();
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}
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String received = new String(packet.getData(), 0, packet.getLength());
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return received;
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}
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public void close() {
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socket.close();
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}
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}
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package com.baeldung.java.networking.udp;
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import java.io.IOException;
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import java.net.DatagramPacket;
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import java.net.DatagramSocket;
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import java.net.InetAddress;
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public class EchoServer extends Thread {
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protected DatagramSocket socket = null;
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protected boolean running;
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protected byte[] buf = new byte[256];
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public EchoServer() throws IOException {
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socket = new DatagramSocket(4445);
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}
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public void run() {
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running = true;
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while (running) {
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try {
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DatagramPacket packet = new DatagramPacket(buf, buf.length);
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socket.receive(packet);
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InetAddress address = packet.getAddress();
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int port = packet.getPort();
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packet = new DatagramPacket(buf, buf.length, address, port);
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String received = new String(packet.getData(), 0, packet.getLength());
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if (received.equals("end")) {
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running = false;
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continue;
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}
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socket.send(packet);
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} catch (IOException e) {
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e.printStackTrace();
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running = false;
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}
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}
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socket.close();
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}
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}
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@ -0,0 +1,33 @@
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package com.baeldung.java.networking.udp;
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import static org.junit.Assert.*;
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import java.io.IOException;
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import org.junit.After;
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import org.junit.Before;
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import org.junit.Test;
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public class UDPTest {
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EchoClient client = null;
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@Before
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public void setup() throws IOException {
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new EchoServer().start();
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client = new EchoClient();
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}
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@Test
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public void whenCanSendAndReceivePacket_thenCorrect1() {
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String echo = client.sendEcho("hello server");
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assertEquals("hello server", echo);
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echo = client.sendEcho("server is working");
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assertFalse(echo.equals("hello server"));
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}
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@After
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public void tearDown() {
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client.sendEcho("end");
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client.close();
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}
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}
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@ -1,15 +1,15 @@
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package com.baeldung.java.nio.selector;
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import java.io.File;
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import java.io.IOException;
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import java.net.InetSocketAddress;
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import java.nio.ByteBuffer;
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import java.nio.channels.SelectionKey;
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import java.nio.channels.Selector;
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import java.nio.channels.ServerSocketChannel;
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import java.nio.channels.SocketChannel;
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import java.util.Iterator;
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import java.nio.channels.Selector;
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import java.nio.channels.SelectionKey;
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import java.nio.ByteBuffer;
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import java.io.IOException;
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import java.util.Set;
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import java.util.Iterator;
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import java.net.InetSocketAddress;
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import java.io.File;
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public class EchoServer {
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@ -49,6 +49,7 @@ public class EchoServer {
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}
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}
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public static Process start() throws IOException, InterruptedException {
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String javaHome = System.getProperty("java.home");
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String javaBin = javaHome + File.separator + "bin" + File.separator + "java";
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@ -59,4 +60,4 @@ public class EchoServer {
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return builder.start();
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}
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}
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}
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package com.baeldung.java.networking.url;
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import static org.junit.Assert.assertEquals;
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import java.net.MalformedURLException;
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import java.net.URL;
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import org.junit.Test;
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public class UrlTest {
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@Test
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public void givenUrl_whenCanIdentifyProtocol_thenCorrect() throws MalformedURLException {
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URL url = new URL("http://baeldung.com");
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assertEquals("http", url.getProtocol());
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}
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@Test
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public void givenUrl_whenCanGetHost_thenCorrect() throws MalformedURLException {
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URL url = new URL("http://baeldung.com");
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assertEquals("baeldung.com", url.getHost());
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}
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@Test
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public void givenUrl_whenCanGetFileName_thenCorrect2() throws MalformedURLException {
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URL url = new URL("http://baeldung.com/articles?topic=java&version=8");
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assertEquals("/articles?topic=java&version=8", url.getFile());
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}
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@Test
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public void givenUrl_whenCanGetFileName_thenCorrect1() throws MalformedURLException {
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URL url = new URL("http://baeldung.com/guidelines.txt");
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assertEquals("/guidelines.txt", url.getFile());
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}
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@Test
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public void givenUrl_whenCanGetPathParams_thenCorrect() throws MalformedURLException {
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URL url = new URL("http://baeldung.com/articles?topic=java&version=8");
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assertEquals("/articles", url.getPath());
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}
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@Test
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public void givenUrl_whenCanGetQueryParams_thenCorrect() throws MalformedURLException {
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URL url = new URL("http://baeldung.com/articles?topic=java");
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assertEquals("topic=java", url.getQuery());
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}
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@Test
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public void givenUrl_whenGetsDefaultPort_thenCorrect() throws MalformedURLException {
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URL url = new URL("http://baeldung.com");
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assertEquals(-1, url.getPort());
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assertEquals(80, url.getDefaultPort());
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}
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@Test
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public void givenUrl_whenGetsPort_thenCorrect() throws MalformedURLException {
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URL url = new URL("http://baeldung.com:8090");
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assertEquals(8090, url.getPort());
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assertEquals(80, url.getDefaultPort());
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}
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@Test
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public void givenBaseUrl_whenCreatesRelativeUrl_thenCorrect() throws MalformedURLException {
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URL baseUrl = new URL("http://baeldung.com");
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URL relativeUrl = new URL(baseUrl, "a-guide-to-java-sockets");
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assertEquals("http://baeldung.com/a-guide-to-java-sockets", relativeUrl.toString());
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}
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@Test
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public void givenAbsoluteUrl_whenIgnoresBaseUrl_thenCorrect() throws MalformedURLException {
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URL baseUrl = new URL("http://baeldung.com");
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URL relativeUrl = new URL(baseUrl, "http://baeldung.com/a-guide-to-java-sockets");
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assertEquals("http://baeldung.com/a-guide-to-java-sockets", relativeUrl.toString());
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}
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@Test
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public void givenUrlComponents_whenConstructsCompleteUrl_thenCorrect() throws MalformedURLException {
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String protocol = "http";
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String host = "baeldung.com";
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String file = "/guidelines.txt";
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URL url = new URL(protocol, host, file);
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assertEquals("http://baeldung.com/guidelines.txt", url.toString());
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}
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@Test
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public void givenUrlComponents_whenConstructsCompleteUrl_thenCorrect2() throws MalformedURLException {
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String protocol = "http";
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String host = "baeldung.com";
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String file = "/articles?topic=java&version=8";
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URL url = new URL(protocol, host, file);
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assertEquals("http://baeldung.com/guidelines.txt", url.toString());
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}
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@Test
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public void givenUrlComponentsWithPort_whenConstructsCompleteUrl_thenCorrect() throws MalformedURLException {
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String protocol = "http";
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String host = "baeldung.com";
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int port = 9000;
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String file = "/guidelines.txt";
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URL url = new URL(protocol, host, port, file);
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assertEquals("http://baeldung.com:9000/guidelines.txt", url.toString());
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}
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}
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@ -16,6 +16,7 @@ public class EchoTest {
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String resp2 = client.sendMessage("world");
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assertEquals("hello", resp1);
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assertEquals("world", resp2);
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process.destroy();
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}
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}
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@ -0,0 +1,172 @@
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import static org.junit.Assert.assertEquals;
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import static org.junit.Assert.assertFalse;
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import static org.junit.Assert.assertTrue;
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import java.io.BufferedReader;
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import java.io.DataOutputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.InputStreamReader;
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import java.net.HttpURLConnection;
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import java.net.MalformedURLException;
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import java.net.URL;
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import java.util.Arrays;
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import org.json.JSONArray;
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import org.json.JSONObject;
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import org.junit.Before;
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import org.junit.Test;
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import model.Student;
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import play.test.*;
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import static play.test.Helpers.*;
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|
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public class ApplicationTest{
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private static final String BASE_URL = "http://localhost:9000";
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@Test
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public void testInServer() throws Exception {
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TestServer server = testServer(3333);
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running(server, () -> {
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try {
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WSClient ws = play.libs.ws.WS.newClient(3333);
|
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CompletionStage<WSResponse> completionStage = ws.url("/").get();
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WSResponse response = completionStage.toCompletableFuture().get();
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ws.close();
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assertEquals(OK, response.getStatus());
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} catch (Exception e) {
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logger.error(e.getMessage(), e);
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}
|
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});
|
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}
|
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@Test
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public void whenCreatesRecord_thenCorrect() {
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Student student = new Student("jody", "west", 50);
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JSONObject obj = new JSONObject(makeRequest(BASE_URL, "POST", new JSONObject(student)));
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assertTrue(obj.getBoolean("isSuccessfull"));
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JSONObject body = obj.getJSONObject("body");
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assertEquals(student.getAge(), body.getInt("age"));
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assertEquals(student.getFirstName(), body.getString("firstName"));
|
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assertEquals(student.getLastName(), body.getString("lastName"));
|
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}
|
||||
|
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@Test
|
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public void whenDeletesCreatedRecord_thenCorrect() {
|
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Student student = new Student("Usain", "Bolt", 25);
|
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JSONObject ob1 = new JSONObject(makeRequest(BASE_URL, "POST", new JSONObject(student))).getJSONObject("body");
|
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int id = ob1.getInt("id");
|
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JSONObject obj1 = new JSONObject(makeRequest(BASE_URL + "/" + id, "POST", new JSONObject()));
|
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assertTrue(obj1.getBoolean("isSuccessfull"));
|
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makeRequest(BASE_URL + "/" + id, "DELETE", null);
|
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JSONObject obj2 = new JSONObject(makeRequest(BASE_URL + "/" + id, "POST", new JSONObject()));
|
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assertFalse(obj2.getBoolean("isSuccessfull"));
|
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}
|
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|
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@Test
|
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public void whenUpdatesCreatedRecord_thenCorrect() {
|
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Student student = new Student("john", "doe", 50);
|
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JSONObject body1 = new JSONObject(makeRequest(BASE_URL, "POST", new JSONObject(student))).getJSONObject("body");
|
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assertEquals(student.getAge(), body1.getInt("age"));
|
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int newAge = 60;
|
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body1.put("age", newAge);
|
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JSONObject body2 = new JSONObject(makeRequest(BASE_URL, "PUT", body1)).getJSONObject("body");
|
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assertFalse(student.getAge() == body2.getInt("age"));
|
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assertTrue(newAge == body2.getInt("age"));
|
||||
}
|
||||
|
||||
@Test
|
||||
public void whenGetsAllRecords_thenCorrect() {
|
||||
Student student1 = new Student("jane", "daisy", 50);
|
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Student student2 = new Student("john", "daniel", 60);
|
||||
Student student3 = new Student("don", "mason", 55);
|
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Student student4 = new Student("scarlet", "ohara", 90);
|
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|
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makeRequest(BASE_URL, "POST", new JSONObject(student1));
|
||||
makeRequest(BASE_URL, "POST", new JSONObject(student2));
|
||||
makeRequest(BASE_URL, "POST", new JSONObject(student3));
|
||||
makeRequest(BASE_URL, "POST", new JSONObject(student4));
|
||||
|
||||
JSONObject objects = new JSONObject(makeRequest(BASE_URL, "GET", null));
|
||||
assertTrue(objects.getBoolean("isSuccessfull"));
|
||||
JSONArray array = objects.getJSONArray("body");
|
||||
assertTrue(array.length() >= 4);
|
||||
}
|
||||
|
||||
public static String makeRequest(String myUrl, String httpMethod, JSONObject parameters) {
|
||||
|
||||
URL url = null;
|
||||
try {
|
||||
url = new URL(myUrl);
|
||||
} catch (MalformedURLException e) {
|
||||
e.printStackTrace();
|
||||
}
|
||||
HttpURLConnection conn = null;
|
||||
try {
|
||||
|
||||
conn = (HttpURLConnection) url.openConnection();
|
||||
} catch (IOException e) {
|
||||
e.printStackTrace();
|
||||
}
|
||||
conn.setDoInput(true);
|
||||
|
||||
conn.setReadTimeout(10000);
|
||||
|
||||
conn.setRequestProperty("Content-Type", "application/json");
|
||||
DataOutputStream dos = null;
|
||||
int respCode = 0;
|
||||
String inputString = null;
|
||||
try {
|
||||
conn.setRequestMethod(httpMethod);
|
||||
|
||||
if (Arrays.asList("POST", "PUT").contains(httpMethod)) {
|
||||
String params = parameters.toString();
|
||||
|
||||
conn.setDoOutput(true);
|
||||
|
||||
dos = new DataOutputStream(conn.getOutputStream());
|
||||
dos.writeBytes(params);
|
||||
dos.flush();
|
||||
dos.close();
|
||||
}
|
||||
respCode = conn.getResponseCode();
|
||||
if (respCode != 200 && respCode != 201) {
|
||||
String error = inputStreamToString(conn.getErrorStream());
|
||||
return error;
|
||||
}
|
||||
inputString = inputStreamToString(conn.getInputStream());
|
||||
|
||||
} catch (IOException e) {
|
||||
|
||||
e.printStackTrace();
|
||||
}
|
||||
return inputString;
|
||||
}
|
||||
|
||||
public static String inputStreamToString(InputStream is) {
|
||||
BufferedReader br = null;
|
||||
StringBuilder sb = new StringBuilder();
|
||||
|
||||
String line;
|
||||
try {
|
||||
|
||||
br = new BufferedReader(new InputStreamReader(is));
|
||||
while ((line = br.readLine()) != null) {
|
||||
sb.append(line);
|
||||
}
|
||||
|
||||
} catch (IOException e) {
|
||||
e.printStackTrace();
|
||||
} finally {
|
||||
if (br != null) {
|
||||
try {
|
||||
br.close();
|
||||
} catch (IOException e) {
|
||||
e.printStackTrace();
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return sb.toString();
|
||||
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue