public void TestMulticastIPv6_Offset()
{
Uri uri;
CoapClient client;
List <Response> responseList = new List <Response>();
AutoResetEvent trigger = new AutoResetEvent(false);
if (!SupportsIPV6())
{
Assert.Inconclusive("System does not support IP v6");
}
uri = new Uri($"coap://[{multicastAddress2}]:{_serverPort + PortJump}/{MulticastTarget}");
client = new CoapClient(uri);
client.UseNONs();
client.GetAsync(r => {
responseList.Add(r);
trigger.Set();
});
Assert.IsTrue(trigger.WaitOne(2 * 1000));
Console.WriteLine($"response count = {responseList.Count}");
Assert.IsTrue(responseList.Count == 1);
foreach (Response r in responseList)
{
Assert.AreEqual(StatusCode.Content, r.StatusCode);
Assert.AreEqual(MulticastResponse, r.ResponseText);
}
}
public void TestMulticastV4_Offset()
{
Uri uri;
CoapClient client;
// Check that multicast returns on multicast
List <Response> responseList = new List <Response>();
AutoResetEvent trigger = new AutoResetEvent(false);
uri = new Uri($"coap://{multicastAddress}:{_serverPort + PortJump}/{MulticastTarget}");
client = new CoapClient(uri);
client.UseNONs();
client.GetAsync(r => {
responseList.Add(r);
trigger.Set();
});
trigger.WaitOne(1000);
Assert.IsTrue(responseList.Count == 1);
foreach (Response r in responseList)
{
Assert.AreEqual(StatusCode.Content, r.StatusCode);
Assert.AreEqual(MulticastResponse, r.ResponseText);
}
}
public void TestMulticastV6OfUnicastResource()
{
Uri uri;
CoapClient client;
AutoResetEvent trigger = new AutoResetEvent(false);
uri = new Uri($"coap://[{multicastAddress2}]:{_serverPort + PortJump}/{UnicastTarget}");
client = new CoapClient(uri);
client.UseNONs();
client.GetAsync(r => { trigger.Set(); });
Assert.IsFalse(trigger.WaitOne(1000));
}
public async Task TestClientResponseWithDelay()
{
// Arrange
var mockClientEndpoint = new Mock <MockEndpoint> {
CallBase = true
};
var expected = new CoapMessage
{
Id = 0x1234,
Type = CoapMessageType.Acknowledgement,
Code = CoapMessageCode.Content,
Options = new System.Collections.Generic.List <CoapOption>
{
new Options.ContentFormat(Options.ContentFormatType.ApplicationLinkFormat)
},
Payload = Encoding.UTF8.GetBytes("</.well-known/core>")
};
mockClientEndpoint
.SetupSequence(c => c.MockReceiveAsync(It.IsAny <CancellationToken>()))
.Returns(Task.Delay(500).ContinueWith(t => new CoapPacket {
Payload = expected.ToBytes()
}))
.Throws(new CoapEndpointException("Endpoint closed"));
// Ack
using (var client = new CoapClient(mockClientEndpoint.Object))
{
var ct = new CancellationTokenSource(MaxTaskTimeout);
client.RetransmitTimeout = TimeSpan.FromMilliseconds(200);
client.MaxRetransmitAttempts = 3;
client.SetNextMessageId(0x1234);
// Sned message
var messageId = await client.GetAsync("coap://example.com/.well-known/core", ct.Token);
// Receive msssage
await client.GetResponseAsync(messageId, ct.Token);
}
// Assert
mockClientEndpoint.Verify(x => x.ReceiveAsync(It.IsAny <CancellationToken>()), Times.AtLeastOnce);
}
public async Task TestClientResponse()
{
// Arrange
var mockClientEndpoint = new Mock <MockEndpoint> {
CallBase = true
};
var expected = new CoapMessage
{
Id = 0x1234,
Type = CoapMessageType.Acknowledgement,
Code = CoapMessageCode.Content,
Options = new System.Collections.Generic.List <CoapOption>
{
new Options.ContentFormat(Options.ContentFormatType.ApplicationLinkFormat)
},
Payload = Encoding.UTF8.GetBytes("</.well-known/core>")
};
mockClientEndpoint
.SetupSequence(c => c.MockReceiveAsync())
.Returns(Task.FromResult(new CoapPacket {
Payload = expected.Serialise()
}))
.Throws(new CoapEndpointException("disposed"));
// Ack
using (var client = new CoapClient(mockClientEndpoint.Object))
{
var ct = new CancellationTokenSource(MaxTaskTimeout);
client.SetNextMessageId(0x1234);
// Sned message
var messageId = await client.GetAsync("coap://example.com/.well-known/core", ct.Token);
// Receive msssage
await client.GetResponseAsync(messageId, ct.Token).ConfigureAwait(false);
}
// Assert
mockClientEndpoint.Verify(x => x.ReceiveAsync(), Times.AtLeastOnce);
}
public void TestIgnoreAcknowledgementMessagesWithReservedCode()
{
// Arrange
var mockClientEndpoint = new Mock <MockEndpoint> {
CallBase = true
};
var expected = new CoapMessage
{
Id = 0x1234,
Type = CoapMessageType.Acknowledgement,
Code = new CoapMessageCode(1, 0),
Options = new System.Collections.Generic.List <CoapOption>
{
new Options.ContentFormat(Options.ContentFormatType.ApplicationLinkFormat)
},
Payload = Encoding.UTF8.GetBytes("</.well-known/core>")
};
mockClientEndpoint
.SetupSequence(c => c.MockReceiveAsync(It.IsAny <CancellationToken>()))
.Returns(Task.FromResult(new CoapPacket {
Payload = expected.ToBytes()
}))
.Returns(Task.Delay(2000).ContinueWith <CoapPacket>(_ => throw new CoapEndpointException("Endpoint closed")));
// Ack
using (var client = new CoapClient(mockClientEndpoint.Object))
{
var ct = new CancellationTokenSource(MaxTaskTimeout);
client.RetransmitTimeout = TimeSpan.FromMilliseconds(200);
client.MaxRetransmitAttempts = 3;
client.SetNextMessageId(0x1234);
// Assert
Assert.ThrowsAsync <CoapClientException>(async() => await client.GetAsync("coap://example.com/.well-known/core", ct.Token));
}
}
public async Task TestRepeatedMessagesAfterExpirey()
{
// Arrange
var mockClientEndpoint = new Mock <MockEndpoint> {
CallBase = true
};
var expected = new CoapMessage
{
Id = 0x1234,
Type = CoapMessageType.Acknowledgement,
Code = CoapMessageCode.Content,
Options = new System.Collections.Generic.List <CoapOption>
{
new Options.ContentFormat(Options.ContentFormatType.ApplicationLinkFormat)
},
Payload = Encoding.UTF8.GetBytes("</.well-known/core>")
};
mockClientEndpoint
.SetupSequence(c => c.MockReceiveAsync(It.IsAny <CancellationToken>()))
.Returns(Task.FromResult(new CoapPacket {
Payload = expected.ToBytes()
})) // Received
.Returns(Task.FromResult(new CoapPacket {
Payload = expected.ToBytes()
})) // Ignored (considered duplicate)
.Returns(Task.Delay(500).ContinueWith(_ => new CoapPacket {
Payload = expected.ToBytes()
})) // Received after expirey
.Throws(new CoapEndpointException("disposed"));
int receiveCount = 0;
// Ack
using (var client = new CoapClient(mockClientEndpoint.Object))
{
var ct = new CancellationTokenSource(MaxTaskTimeout);
client.MessageCacheTimeSpan = TimeSpan.FromMilliseconds(250);
client.SetNextMessageId(0x1234);
// Sned message
var messageId = await client.GetAsync("coap://example.com/.well-known/core", ct.Token);
try
{
while (true)
{
await client.ReceiveAsync(ct.Token);
receiveCount++;
}
}
catch (CoapEndpointException)
{
Debug.WriteLine($"Caught CoapEndpointException", nameof(TestReceiveMulticastMessagFromMulticastEndpoint));
}
}
// Assert
Assert.AreEqual(2, receiveCount, "Did not receive same message exactly twice");
}
