private CoapObserveRelation Observe(Request request, Action <Response> notify, Action <FailReason> error)
{
CoapObserveRelation relation = ObserveAsync(request, notify, error);
Response response = relation.Request.WaitForResponse(_timeout);
if (response == null || !response.HasOption(OptionType.Observe))
{
relation.Canceled = true;
}
relation.Current = response;
return(relation);
}
private void TestObserve(Uri uri)
{
Console.WriteLine("Test observe relation with a reactive cancelation to " + uri);
ManualResetEvent mre = new ManualResetEvent(false);
CoapClient client = new CoapClient(uri);
client.EndPoint = _clientEndpoint;
Int32 notificationCounter = 0;
CoapObserveRelation relation = null;
relation = client.Observe(response =>
{
notificationCounter++;
Console.WriteLine("Client received notification " + notificationCounter + ": " + response.PayloadString);
if (notificationCounter == HOW_MANY_NOTIFICATION_WE_WAIT_FOR)
{
Console.WriteLine("Client forgets observe relation to " + uri);
SpinWait.SpinUntil(() => relation != null);
relation.ProactiveCancel();
}
else if (notificationCounter == HOW_MANY_NOTIFICATION_WE_WAIT_FOR + 1)
{
mre.Set();
}
}, reason => Assert.Fail(reason.ToString()));
// Wait until we have received all the notifications and canceled the relation
Thread.Sleep(HOW_MANY_NOTIFICATION_WE_WAIT_FOR * OBS_NOTIFICATION_INTERVALL + 3000);
Boolean success = mre.WaitOne(100);
Assert.IsTrue(success, "Client has not received all expected responses");
_serverSurveillant.WaitUntilDeduplicatorShouldBeEmpty();
_serverSurveillant.AssertMapsEmpty();
_clientSurveillant.AssertMapsEmpty();
}
private CoapObserveRelation ObserveAsync(Request request, Action <Response> notify, Action <FailReason> error)
{
IEndPoint endpoint = GetEffectiveEndpoint(request);
ObserveNotificationOrderer orderer = new ObserveNotificationOrderer(_config);
CoapObserveRelation relation = new CoapObserveRelation(request, endpoint);
request.Respond += (o, e) =>
{
Response resp = e.Response;
lock (orderer)
{
if (orderer.IsNew(resp))
{
relation.Current = resp;
Deliver(notify, e);
}
else
{
if (log.IsDebugEnabled)
{
log.Debug("Dropping old notification: " + resp);
}
}
}
};
Action <FailReason> fail = r =>
{
relation.Canceled = true;
Fail(error, r);
};
request.Reject += (o, e) => fail(FailReason.Rejected);
request.Timeout += (o, e) => fail(FailReason.TimedOut);
Prepare(request, endpoint).Send();
return(relation);
}
public void TestSynchronousCall()
{
Uri uri = new Uri("coap://localhost:" + _serverPort + "/" + TARGET);
CoapClient client = new CoapClient(uri);
// Check that we get the right content when calling get()
String resp1 = client.Get().ResponseText;
Assert.AreEqual(CONTENT_1, resp1);
String resp2 = client.Get().ResponseText;
Assert.AreEqual(CONTENT_1, resp2);
// Change the content to "two" and check
String resp3 = client.Post(CONTENT_2).ResponseText;
Assert.AreEqual(CONTENT_1, resp3);
String resp4 = client.Get().ResponseText;
Assert.AreEqual(CONTENT_2, resp4);
// Observe the resource
_expected = CONTENT_2;
CoapObserveRelation obs1 = client.Observe(response =>
{
Interlocked.Increment(ref _notifications);
String payload = response.ResponseText;
Assert.AreEqual(_expected, payload);
Assert.IsTrue(response.HasOption(OptionType.Observe));
}, Fail);
Assert.IsFalse(obs1.Canceled);
Thread.Sleep(100);
_resource.Changed();
Thread.Sleep(100);
_resource.Changed();
Thread.Sleep(100);
_resource.Changed();
Thread.Sleep(100);
_expected = CONTENT_3;
String resp5 = client.Post(CONTENT_3).ResponseText;
Assert.AreEqual(CONTENT_2, resp5);
// Try a put and receive a METHOD_NOT_ALLOWED
StatusCode code6 = client.Put(CONTENT_4).StatusCode;
Assert.AreEqual(StatusCode.MethodNotAllowed, code6);
// Cancel observe relation of obs1 and check that it does no longer receive notifications
Thread.Sleep(100);
_expected = null; // The next notification would now cause a failure
obs1.ReactiveCancel();
Thread.Sleep(100);
_resource.Changed();
// Make another post
Thread.Sleep(100);
String resp7 = client.Post(CONTENT_4).ResponseText;
Assert.AreEqual(CONTENT_3, resp7);
// Try to use the builder and add a query
UriBuilder ub = new UriBuilder("coap", "localhost", _serverPort, TARGET);
ub.Query = QUERY_UPPER_CASE;
String resp8 = new CoapClient(ub.Uri).Get().ResponseText;
Assert.AreEqual(CONTENT_4.ToUpper(), resp8);
// Check that we indeed received 5 notifications
// 1 from origin GET request, 3 x from changed(), 1 from post()
Thread.Sleep(100);
Assert.AreEqual(5, _notifications);
Assert.IsFalse(_failed);
}
private CoapObserveRelation ObserveAsync(Request request, Action<Response> notify, Action<FailReason> error)
{
IEndPoint endpoint = GetEffectiveEndpoint(request);
ObserveNotificationOrderer orderer = new ObserveNotificationOrderer(_config);
CoapObserveRelation relation = new CoapObserveRelation(request, endpoint);
request.Respond += (o, e) =>
{
Response resp = e.Response;
lock (orderer)
{
if (orderer.IsNew(resp))
{
relation.Current = resp;
Deliver(notify, e);
}
else
{
if (log.IsDebugEnabled)
log.Debug("Dropping old notification: " + resp);
}
}
};
Action<FailReason> fail = r =>
{
relation.Canceled = true;
Fail(error, r);
};
request.Reject += (o, e) => fail(FailReason.Rejected);
request.Timeout += (o, e) => fail(FailReason.TimedOut);
Prepare(request, endpoint).Send();
return relation;
}
