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ClientServerTest.java
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ClientServerTest.java
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/*
* Copyright (C) 2011-2018 ARM Limited. All rights reserved.
* Copyright (c) 2023 Izuma Networks. All rights reserved.
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package protocolTests;
import static org.assertj.core.api.Assertions.*;
import static org.junit.Assert.*;
import static protocolTests.utils.CoapPacketBuilder.*;
import com.mbed.coap.CoapConstants;
import com.mbed.coap.client.CoapClient;
import com.mbed.coap.client.CoapClientBuilder;
import com.mbed.coap.exception.CoapException;
import com.mbed.coap.packet.CoapPacket;
import com.mbed.coap.packet.Code;
import com.mbed.coap.packet.MessageType;
import com.mbed.coap.packet.Method;
import com.mbed.coap.server.CoapServer;
import com.mbed.coap.server.CoapServerBuilder;
import com.mbed.coap.transmission.CoapTimeout;
import com.mbed.coap.transmission.SingleTimeout;
import com.mbed.coap.transport.InMemoryCoapTransport;
import com.mbed.coap.transport.TransportContext;
import com.mbed.coap.utils.Callback;
import com.mbed.coap.utils.FutureCallbackAdapter;
import com.mbed.coap.utils.ReadOnlyCoapResource;
import java.io.IOException;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.util.Random;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
import org.junit.After;
import org.junit.Before;
import org.junit.Ignore;
import org.junit.Test;
/**
* @author szymon
*/
public class ClientServerTest {
private CoapServer server = null;
private int SERVER_PORT;
private InetSocketAddress serverAddress;
@Before
public void setUp() throws IOException {
server = CoapServer.builder().transport(0).build();
server.addRequestHandler("/test/1", new ReadOnlyCoapResource("Dziala"));
server.addRequestHandler("/resource*", new ReadOnlyCoapResource("Prefix dziala"));
server.addRequestHandler("/", new ReadOnlyCoapResource("Shortest path"));
server.useCriticalOptionTest(false);
server.start();
SERVER_PORT = server.getLocalSocketAddress().getPort();
serverAddress = new InetSocketAddress(InetAddress.getLocalHost(), SERVER_PORT);
}
@After
public void tearDown() {
server.stop();
}
@Test
public void simpleRequest() throws Exception {
CoapServer cnn = CoapServer.builder().transport(0).build();
cnn.start();
CoapPacket request = new CoapPacket(serverAddress);
request.setMethod(Method.GET);
request.headers().setUriPath("/test/1");
request.setMessageId(1647);
FutureCallbackAdapter<CoapPacket> callback = new FutureCallbackAdapter<>();
cnn.makeRequest(request, callback);
assertEquals("Dziala", callback.get().getPayloadString());
cnn.stop();
}
@Test
public void simpleRequestWithCustomHeader() throws Exception {
CoapServer cnn = CoapServer.builder().transport(0).build();
cnn.start();
CoapPacket request = new CoapPacket(serverAddress);
request.setMethod(Method.GET);
request.headers().setUriPath("/test/1");
request.setMessageId(1647);
request.headers().put(74, new byte[]{1, 2, 3});
FutureCallbackAdapter<CoapPacket> callback = new FutureCallbackAdapter<>();
cnn.makeRequest(request, callback);
assertEquals("Dziala", callback.get().getPayloadString());
cnn.stop();
}
@Test
public void simpleRequestWithCriticalCustomHeader() throws Exception {
server.useCriticalOptionTest(true);
CoapServer cnn = CoapServer.builder().transport(0).build();
cnn.start();
CoapPacket request = new CoapPacket(serverAddress);
request.setMethod(Method.GET);
request.headers().setUriPath("/test/1");
request.setMessageId(1647);
request.headers().put(71, new byte[]{1, 2, 3});
FutureCallbackAdapter<CoapPacket> callback = new FutureCallbackAdapter<>();
cnn.makeRequest(request, callback);
assertEquals(Code.C402_BAD_OPTION, callback.get().getCode());
cnn.stop();
}
@Test
public void simpleRequestWithCriticalCustomHeader2() throws Exception {
server.useCriticalOptionTest(false);
CoapServer cnn = CoapServer.builder().transport(0).build();
cnn.start();
CoapPacket request = new CoapPacket(serverAddress);
request.setMethod(Method.GET);
request.headers().setUriPath("/test/1");
request.setMessageId(1647);
request.headers().put((byte) 71, new byte[]{1, 2, 3});
FutureCallbackAdapter<CoapPacket> callback = new FutureCallbackAdapter<>();
cnn.makeRequest(request, callback);
assertEquals("Dziala", callback.get().getPayloadString());
cnn.stop();
}
@Test
public void simpleRequestToShortestPath() throws Exception {
CoapServer cnn = CoapServer.builder().transport(0).build();
cnn.start();
CoapPacket request = new CoapPacket(serverAddress);
request.setMethod(Method.GET);
request.headers().setUriPath("/");
request.setMessageId(1648);
assertEquals("Shortest path", cnn.makeRequest(request).join().getPayloadString());
cnn.stop();
}
@Test
public void simpleRequest2() throws Exception {
try (CoapClient client = CoapClientBuilder.newBuilder().target(SERVER_PORT).build()) {
Future<CoapPacket> coapResp = client.resource("/test/1").get();
assertEquals("Dziala", coapResp.get().getPayloadString());
}
}
@Test
public void simpleRequest3() throws Exception {
try (CoapClient client = CoapClientBuilder.newBuilder().target(SERVER_PORT).build()) {
Future<CoapPacket> coapResp = client.resource("/resource/123").get();
assertEquals("Prefix dziala", coapResp.get().getPayloadString());
coapResp = client.resource("/test/1/tre").get();
assertEquals(Code.C404_NOT_FOUND, coapResp.get().getCode());
}
}
@Test
@Ignore
public void simpleIPv6Request() throws CoapException, IOException {
InetAddress adr = InetAddress.getByName("::1");
CoapServer ipv6Server = CoapServerBuilder.newBuilder().transport(0).build();
ipv6Server.addRequestHandler("/resource", new ReadOnlyCoapResource("1234qwerty"));
ipv6Server.start();
try (CoapClient client = CoapClientBuilder.newBuilder(new InetSocketAddress(adr, ipv6Server.getLocalSocketAddress().getPort())).build()) {
CoapPacket coapResp = client.resource("/resource").sync().get();
assertEquals("1234qwerty", coapResp.getPayloadString());
}
ipv6Server.stop();
}
@Test
public void duplicateTest() throws Exception {
DatagramSocket datagramSocket = new DatagramSocket();
datagramSocket.setSoTimeout(3000);
CoapPacket cpRequest = new CoapPacket(Method.GET, MessageType.Confirmable, "/test/1", null);
cpRequest.setMessageId(4321);
DatagramPacket packet = new DatagramPacket(cpRequest.toByteArray(), cpRequest.toByteArray().length, InetAddress.getLocalHost(), SERVER_PORT);
DatagramPacket recPacket = new DatagramPacket(new byte[1024], 1024);
DatagramPacket recPacket2 = new DatagramPacket(new byte[1024], 1024);
datagramSocket.send(packet);
datagramSocket.receive(recPacket);
//send duplicate
Thread.sleep(20);
datagramSocket.send(packet);
datagramSocket.receive(recPacket2);
datagramSocket.close();
assertArrayEquals(recPacket.getData(), recPacket2.getData());
}
@Test
public void requestWithPacketLost() throws CoapException, IOException {
CoapServer serverNode = CoapServerBuilder.newBuilder().transport(InMemoryCoapTransport.create(5683)).build();
final ReadOnlyCoapResource res = new ReadOnlyCoapResource("Not dropped");
serverNode.addRequestHandler("/dropping", res);
serverNode.start();
try (CoapClient cnn = CoapClientBuilder.newBuilder(InMemoryCoapTransport.createAddress(5683))
.transport(new DroppingPacketsTransportWrapper(0, (byte) 0) {
private boolean hasDropped = false;
@Override
public void sendPacket0(CoapPacket coapPacket, InetSocketAddress adr, TransportContext tranContext) {
//will drop only first packet
if (!hasDropped) {
hasDropped = true;
res.setResourceBody("dropped");
System.out.println("dropped");
} else {
super.sendPacket0(coapPacket, adr, tranContext);
}
}
})
.timeout(new CoapTimeout(100)).build()) {
CoapPacket resp = cnn.resource("/dropping").sync().get();
assertEquals("dropped", resp.getPayloadString());
}
}
@Test
public void simpleRequest4() throws Exception {
CoapServer cnn = CoapServerBuilder.newBuilder().transport(0).build();
cnn.start();
CoapClient client = CoapClientBuilder.clientFor(serverAddress, cnn);
assertEquals("Dziala", client.resource("/test/1").maxAge(2635593050L).get().join().getPayloadString());
cnn.stop();
}
@Test
public void simpleRequest5() throws IOException, CoapException {
CoapServer srv = CoapServerBuilder.newBuilder().transport(InMemoryCoapTransport.create(61601)).build();
srv.addRequestHandler("/temp", new ReadOnlyCoapResource("23 C"));
srv.start();
try (CoapClient cnn = CoapClientBuilder.newBuilder(InMemoryCoapTransport.createAddress(61601)).transport(InMemoryCoapTransport.create(0)).build()) {
assertEquals("23 C", cnn.resource("/temp").sync().get().getPayloadString());
}
srv.stop();
}
@Test
public void simpleRequestWithUnknownCriticalOptionHeader() throws IOException, CoapException {
CoapServer srv = CoapServerBuilder.newBuilder().transport(InMemoryCoapTransport.create(61601)).build();
srv.addRequestHandler("/temp", new ReadOnlyCoapResource("23 C"));
srv.start();
try (CoapClient client = CoapClientBuilder.newBuilder(InMemoryCoapTransport.createAddress(61601)).transport(new InMemoryCoapTransport()).build()) {
assertEquals(Code.C402_BAD_OPTION, client.resource("/temp").header(123, "dupa".getBytes()).sync().get().getCode());
}
srv.stop();
}
@Test(expected = java.lang.IllegalStateException.class)
public void stopNonRunningServer() {
CoapServer srv = CoapServerBuilder.newBuilder().transport(0).build();
srv.stop();
}
@Test(expected = java.lang.IllegalStateException.class)
public void startRunningServer() throws IOException {
CoapServer srv = CoapServerBuilder.newBuilder().transport(0).build();
srv.start();
srv.start();
}
@Test
public void testRequestWithPacketDelay() throws Exception {
CoapServer serverNode = CoapServerBuilder.newBuilder().transport(InMemoryCoapTransport.create(5683)).build();
serverNode.addRequestHandler("/test/1", new ReadOnlyCoapResource("Dziala"));
serverNode.start();
ExecutorService executorService = Executors.newCachedThreadPool();
CoapServer cnn = CoapServerBuilder.newBuilder()
.transport(new InMemoryCoapTransport(0, command -> executorService.execute(() -> {
try {
Thread.sleep(100);
} catch (InterruptedException e) {
throw new RuntimeException();
}
command.run();
}))).build();
cnn.start();
CoapPacket request = new CoapPacket(InMemoryCoapTransport.createAddress(5683));
request.setMethod(Method.GET);
request.headers().setUriPath("/test/1");
request.setMessageId(1647);
FutureCallbackAdapter<CoapPacket> callback = new FutureCallbackAdapter<>();
cnn.makeRequest(request, callback);
assertEquals("Dziala", callback.get().getPayloadString());
cnn.stop();
}
@Test(expected = com.mbed.coap.exception.CoapTimeoutException.class)
public void testRequestWithPacketDropping() throws IOException, CoapException {
CoapServer srv = CoapServerBuilder.newBuilder()
.transport(new DroppingPacketsTransportWrapper(CoapConstants.DEFAULT_PORT, (byte) 100))
.build();
srv.addRequestHandler("/test", new ReadOnlyCoapResource("TEST"));
srv.start();
CoapClient cnn = CoapClientBuilder.newBuilder(InMemoryCoapTransport.createAddress(CoapConstants.DEFAULT_PORT))
.transport(InMemoryCoapTransport.create()).timeout(new SingleTimeout(100)).build();
assertNotNull(cnn.resource("/test").sync().get());
}
@Test(expected = NullPointerException.class)
public void testMakeRequestWithNullCallback() throws CoapException {
server.makeRequest(new CoapPacket(null), (Callback<CoapPacket>) null);
}
@Test(expected = NullPointerException.class)
public void testMakeRequestWithNullAddress() throws CoapException {
server.makeRequest(new CoapPacket(Method.GET, MessageType.Confirmable, "", null), new FutureCallbackAdapter<CoapPacket>());
}
@Test(expected = NullPointerException.class)
public void testMakeRequestNullRequest() throws CoapException {
server.makeRequest(new CoapPacket(Method.GET, MessageType.Confirmable, "", null), new FutureCallbackAdapter<CoapPacket>());
}
@Test
public void should_invoke_callback_exceptionally_when_server_stops() throws Exception {
server.addRequestHandler("/slow", new ReadOnlyCoapResource(() -> {
try {
Thread.sleep(2000);
} catch (InterruptedException e) {
//ignore
}
return "";
}));
CoapServer cnn = CoapServer.builder().transport(0).build();
cnn.start();
FutureCallbackAdapter<CoapPacket> callback = new FutureCallbackAdapter<>();
cnn.makeRequest(newCoapPacket(serverAddress).mid(11).con().get().uriPath("/slow").build(), callback);
cnn.stop();
assertThatThrownBy(callback::get).hasCauseInstanceOf(IOException.class);
}
@Test
public void should_invoke_callback_exceptionally_when_server_stops_and_non_request() throws Exception {
server.addRequestHandler("/slow", new ReadOnlyCoapResource(() -> {
try {
Thread.sleep(2000);
} catch (InterruptedException e) {
//ignore
}
return "";
}));
CoapServer cnn = CoapServer.builder().transport(0).build();
cnn.start();
FutureCallbackAdapter<CoapPacket> callback = new FutureCallbackAdapter<>();
cnn.makeRequest(newCoapPacket(serverAddress).mid(11).non().get().token(12).uriPath("/slow").build(), callback);
cnn.stop();
assertThatThrownBy(callback::get).hasCauseInstanceOf(IOException.class);
}
private static class DroppingPacketsTransportWrapper extends InMemoryCoapTransport {
private final byte probability; //0-100
private final Random r = new Random();
private boolean drop() {
return probability > 0 && r.nextInt(100) < probability;
}
private DroppingPacketsTransportWrapper(int port, int probability) {
super(port);
if (probability < 0 || probability > 100) {
throw new IllegalArgumentException("Value must be in range 0-100");
}
this.probability = ((byte) probability);
}
@Override
public void receive(InMemoryCoapTransport.DatagramMessage msg) {
if (!drop()) {
super.receive(msg);
}
}
}
}