/**
* Retransmission intervals (RC = Retransmission Counter): immediately send CON message, set RC =
* 0 wait 2 - 3 sec then send retransmission, set RC = 1 wait 4 - 6 sec then send retransmission,
* set RC = 2 wait 8 - 12 sec then send retransmission, set RC = 3 wait 16 - 24 sec then send
* retransmission, set RC = 4 wait 32 - 48 sec then fail transmission
*
* @throws Exception
*/
@Override
public void createTestScenario() throws Exception {
// client testEndpoint DESCRIPTION
// | |
// (1) |----CON-GET----------------->| Client sends confirmable request
// | |
// (2) |----1st RETRANSMISSION------>| (Client should send four
// retransmissions)
// | |
// (3) |----2nd RETRANSMISSION------>|
// | |
// (4) |----3rd RETRANSMISSION------>|
// | |
// (5) |----4th RETRANSMISSION------>|
// | |
// | | internal timeout notification to
// response processor
// Send coapRequest
InetSocketAddress remoteEndpoint = new InetSocketAddress("127.0.0.1", testEndpoint.getPort());
client.sendCoapRequest(coapRequest, responseProcessor, remoteEndpoint);
timeRequestSent = System.currentTimeMillis();
// Wait for the message ID to retire (takes 247 seconds).
Thread.sleep(50000);
log.warn(
"Now we have to wait for the message ID to time out (~200 seconds)... Time to get a coffee!");
Thread.sleep(200000);
}
@Override
public void setupComponents() throws Exception {
testEndpoint = new CoapTestEndpoint();
client = new CoapClientApplication("CoAP Testclient");
responseProcessor = new CoapResponseTestProcessor();
URI targetUri = new URI("coap://localhost:" + testEndpoint.getPort() + "/testpath");
coapRequest = new CoapRequest(MessageType.Name.CON, MessageCode.Name.GET, targetUri);
}
@Test
public void testAllRequestsAreEqual() {
SortedMap<Long, CoapMessage> receivedMessages = testEndpoint.getReceivedCoapMessages();
CoapMessage firstMessage = receivedMessages.get(receivedMessages.firstKey());
for (CoapMessage message : receivedMessages.values()) {
assertEquals("Received requests did not equal.", firstMessage, message);
}
}
@Override
public void shutdownComponents() throws Exception {
client.shutdown();
testEndpoint.shutdown();
}
@Test
public void testNumberOfReceivedRequests() {
int expected = 5;
int actual = testEndpoint.getReceivedCoapMessages().size();
assertEquals("Endpoint received wrong number of requests!", expected, actual);
}