/** Sending a request to a node not listening on that port should result in disconnection */
@Test
public void testConnectionRefused() throws Exception {
String connectionId =
selector.connect(
new InetSocketAddress("localhost", 6668), BUFFER_SIZE, BUFFER_SIZE, PortType.SSL);
while (selector.disconnected().contains(connectionId)) {
selector.poll(1000L);
}
}
private String blockingRequest(String connectionId, String s) throws Exception {
selector.poll(1000L, asList(SelectorTest.createSend(connectionId, s)));
while (true) {
selector.poll(1000L);
for (NetworkReceive receive : selector.completedReceives()) {
if (receive.getConnectionId() == connectionId) {
return SelectorTest.asString(receive);
}
}
}
}
/** Validate that the client can intentionally disconnect and reconnect */
@Test
public void testClientDisconnect() throws Exception {
String connectionId = blockingSSLConnect();
selector.disconnect(connectionId);
selector.poll(10, asList(SelectorTest.createSend(connectionId, "hello1")));
assertEquals("Request should not have succeeded", 0, selector.completedSends().size());
assertEquals("There should be a disconnect", 1, selector.disconnected().size());
assertTrue(
"The disconnect should be from our node", selector.disconnected().contains(connectionId));
connectionId = blockingSSLConnect();
assertEquals("hello2", blockingRequest(connectionId, "hello2"));
}
/* connect and wait for the connection to complete */
private String blockingSSLConnect() throws IOException {
String connectionId =
selector.connect(
new InetSocketAddress("localhost", server.port),
BUFFER_SIZE,
BUFFER_SIZE,
PortType.SSL);
while (!selector.connected().contains(connectionId)) {
selector.poll(10000L);
}
return connectionId;
}
@Test
public void testCloseAfterConnectCall() throws IOException {
String connectionId =
selector.connect(
new InetSocketAddress("localhost", server.port),
BUFFER_SIZE,
BUFFER_SIZE,
PortType.SSL);
selector.close(connectionId);
selector.poll(0);
Assert.assertTrue(
"Channel should have been added to disconnected list",
selector.disconnected().contains(connectionId));
}
@Test
public void testSSLConnect() throws IOException {
String connectionId =
selector.connect(
new InetSocketAddress("localhost", server.port),
BUFFER_SIZE,
BUFFER_SIZE,
PortType.SSL);
while (!selector.connected().contains(connectionId)) {
selector.poll(10000L);
}
Assert.assertTrue(
"Channel should have been ready by now ", selector.isChannelReady(connectionId));
}
/**
* Send multiple requests to several connections in parallel. Validate that responses are received
* in the order that requests were sent.
*/
@Test
public void testNormalOperation() throws Exception {
int conns = 5;
// create connections
ArrayList<String> connectionIds = new ArrayList<String>();
for (int i = 0; i < conns; i++) {
connectionIds.add(blockingSSLConnect());
}
// send echo requests and receive responses
int responseCount = 0;
List<NetworkSend> sends = new ArrayList<NetworkSend>();
for (int i = 0; i < conns; i++) {
String connectionId = connectionIds.get(i);
sends.add(SelectorTest.createSend(connectionId, connectionId + "&" + 0));
}
// loop until we complete all requests
while (responseCount < conns) {
// do the i/o
selector.poll(0L, sends);
assertEquals("No disconnects should have occurred.", 0, selector.disconnected().size());
// handle any responses we may have gotten
for (NetworkReceive receive : selector.completedReceives()) {
String[] pieces = SelectorTest.asString(receive).split("&");
assertEquals("Should be in the form 'conn-counter'", 2, pieces.length);
assertEquals("Check the source", receive.getConnectionId(), pieces[0]);
assertEquals(
"Check that the receive has kindly been rewound",
0,
receive.getReceivedBytes().getPayload().position());
assertTrue(
"Received connectionId is as expected ",
connectionIds.contains(receive.getConnectionId()));
assertEquals("Check the request counter", 0, Integer.parseInt(pieces[1]));
responseCount++;
}
// prepare new sends for the next round
sends.clear();
for (NetworkSend send : selector.completedSends()) {
String dest = send.getConnectionId();
sends.add(SelectorTest.createSend(dest, dest + "&" + 0));
}
}
}
/**
* Validate that when the server disconnects, a client send ends up with that node in the
* disconnected list.
*/
@Test
public void testServerDisconnect() throws Exception {
// connect and do a simple request
String connectionId = blockingSSLConnect();
assertEquals("hello", blockingRequest(connectionId, "hello"));
// disconnect
server.closeConnections();
while (!selector.disconnected().contains(connectionId)) {
selector.poll(1000L);
}
// reconnect and do another request
connectionId = blockingSSLConnect();
assertEquals("hello", blockingRequest(connectionId, "hello"));
}
/**
* Sending a request to a node with a bad hostname should result in an exception during connect
*/
@Test(expected = IOException.class)
public void testNoRouteToHost() throws Exception {
selector.connect(
new InetSocketAddress("asdf.asdf.dsc", server.port),
BUFFER_SIZE,
BUFFER_SIZE,
PortType.SSL);
}
/** Sending a request with one already in flight should result in an exception */
@Test(expected = IllegalStateException.class)
public void testCantSendWithInProgress() throws Exception {
String connectionId = blockingSSLConnect();
selector.poll(
1000L,
asList(
SelectorTest.createSend(connectionId, "test1"),
SelectorTest.createSend(connectionId, "test2")));
}
@After
public void teardown() throws Exception {
selector.close();
server.close();
}