async Task GetPart1SpecificSteps(IChannel channel, ReadListeningHandler readHandler)
{
int publishQoS1PacketId = GetRandomPacketId();
await channel.WriteAndFlushManyAsync(
new PublishPacket(QualityOfService.AtMostOnce, false, false)
{
//TopicName = string.Format("devices/{0}/messages/log/verbose/", clientId),
TopicName = $"devices/{this.clientId}/messages/events",
Payload = Unpooled.WrappedBuffer(Encoding.UTF8.GetBytes("{\"test\": \"telemetry-QoS0\"}"))
},
new PublishPacket(QualityOfService.AtLeastOnce, false, false)
{
PacketId = publishQoS1PacketId,
TopicName = $"devices/{this.clientId}/messages/events",
Payload = Unpooled.WrappedBuffer(Encoding.UTF8.GetBytes("{\"test\": \"telemetry\"}"))
});
var packets = new Packet[5];
for (int i = packets.Length - 1; i >= 0; i--)
{
packets[i] = Assert.IsAssignableFrom<Packet>(await readHandler.ReceiveAsync());
}
PubAckPacket pubAckPacket = Assert.Single(packets.OfType<PubAckPacket>());
Assert.Equal(publishQoS1PacketId, pubAckPacket.PacketId);
PublishPacket publishQoS0Packet = Assert.Single(packets.OfType<PublishPacket>().Where(x => x.QualityOfService == QualityOfService.AtMostOnce));
this.AssertPacketCoreValue(publishQoS0Packet, NotificationQoS0Content);
PublishPacket publishQoS1Packet = Assert.Single(packets.OfType<PublishPacket>().Where(x => x.QualityOfService == QualityOfService.AtLeastOnce));
this.AssertPacketCoreValue(publishQoS1Packet, NotificationQoS1Content);
PublishPacket[] publishQoS2Packets = packets.OfType<PublishPacket>().Where(x => x.QualityOfService == QualityOfService.ExactlyOnce).Reverse().ToArray();
Assert.Equal(2, publishQoS2Packets.Length);
PublishPacket publishQoS2Packet1 = publishQoS2Packets[0];
this.AssertPacketCoreValue(publishQoS2Packet1, NotificationQoS2Content);
PublishPacket publishQoS2Packet2 = publishQoS2Packets[1];
this.AssertPacketCoreValue(publishQoS2Packet2, NotificationQoS2Content2);
await channel.WriteAndFlushManyAsync(
PubAckPacket.InResponseTo(publishQoS1Packet),
PubRecPacket.InResponseTo(publishQoS2Packet1),
PubRecPacket.InResponseTo(publishQoS2Packet2));
var pubRelQoS2Packet1 = Assert.IsAssignableFrom<PubRelPacket>(await readHandler.ReceiveAsync());
Assert.Equal(publishQoS2Packet1.PacketId, pubRelQoS2Packet1.PacketId);
var pubRelQoS2Packet2 = Assert.IsAssignableFrom<PubRelPacket>(await readHandler.ReceiveAsync());
Assert.Equal(publishQoS2Packet2.PacketId, pubRelQoS2Packet2.PacketId);
await channel.WriteAndFlushManyAsync(
PubCompPacket.InResponseTo(pubRelQoS2Packet1),
DisconnectPacket.Instance);
// device queue still contains QoS 2 packet 2 which was PUBRECed but not PUBCOMPed.
}
async Task ReceiveAndCompleteCommandAsync(IChannel clientChannel, ReadListeningHandler readHandler, IotHubConnectionStringBuilder hubConnectionStringBuilder, Device device)
{
var packet = Assert.IsType <PublishPacket>(await readHandler.ReceiveAsync());
Assert.Equal($"devices/{this.deviceId}/messages/devicebound", packet.TopicName);
Assert.Equal(MethodContent, Encoding.UTF8.GetString(packet.Payload.ToArray()));
await clientChannel.WriteAndFlushManyAsync(PubAckPacket.InResponseTo(packet), PubRecPacket.InResponseTo(packet));
var pubRelQoS2Packet2 = Assert.IsAssignableFrom <PubRelPacket>(await readHandler.ReceiveAsync());
await clientChannel.WriteAndFlushManyAsync(
PubCompPacket.InResponseTo(pubRelQoS2Packet2),
DisconnectPacket.Instance);
await this.EnsureDeviceQueueLengthAsync(hubConnectionStringBuilder.HostName, device, 0);
}
async Task SubscribeAsync(IChannel channel, ReadListeningHandler readHandler)
{
int subscribePacket1Id = GetRandomPacketId();
int subscribePacket2Id = GetRandomPacketId();
await channel.WriteAndFlushManyAsync(
new SubscribePacket(subscribePacket1Id, new SubscriptionRequest($"devices/{this.clientId}/messages/devicebound/#", QualityOfService.ExactlyOnce)),
new SubscribePacket(subscribePacket2Id, new SubscriptionRequest("multi/subscribe/check", QualityOfService.AtMostOnce)));
var subAck1Packet = Assert.IsType<SubAckPacket>(await readHandler.ReceiveAsync());
Assert.Equal(subscribePacket1Id, subAck1Packet.PacketId);
Assert.Equal(1, subAck1Packet.ReturnCodes.Count);
Assert.Equal(QualityOfService.ExactlyOnce, subAck1Packet.ReturnCodes[0]);
var subAck2Packet = Assert.IsType<SubAckPacket>(await readHandler.ReceiveAsync());
Assert.Equal(subscribePacket2Id, subAck2Packet.PacketId);
Assert.Equal(1, subAck2Packet.ReturnCodes.Count);
Assert.Equal(QualityOfService.AtMostOnce, subAck2Packet.ReturnCodes[0]);
}
async Task ConnectAsync(IChannel channel, ReadListeningHandler readHandler)
{
await channel.WriteAndFlushAsync(new ConnectPacket
{
ClientId = this.clientId,
HasUsername = true,
Username = this.iotHubName + "/" + this.clientId,
HasPassword = true,
Password = this.password,
KeepAliveInSeconds = 120,
HasWill = true,
WillTopicName = "last/word",
WillMessage = Unpooled.WrappedBuffer(Encoding.UTF8.GetBytes("oops"))
});
var connAckPacket = Assert.IsType<ConnAckPacket>(await readHandler.ReceiveAsync());
Assert.Equal(ConnectReturnCode.Accepted, connAckPacket.ReturnCode);
}
async Task GetPart2SpecificSteps(IChannel channel, ReadListeningHandler readHandler)
{
var packets = new Packet[2];
for (int i = packets.Length - 1; i >= 0; i--)
{
packets[i] = Assert.IsAssignableFrom<Packet>(await readHandler.ReceiveAsync());
}
PublishPacket qos1Packet = Assert.Single(packets.OfType<PublishPacket>());
Assert.Equal(QualityOfService.AtLeastOnce, qos1Packet.QualityOfService);
this.AssertPacketCoreValue(qos1Packet, Encoding.ASCII.GetString(qos1Packet.Payload.ToArray()));
PubRelPacket pubRelQos2Packet = Assert.Single(packets.OfType<PubRelPacket>());
await channel.WriteAndFlushManyAsync(
PubAckPacket.InResponseTo(qos1Packet),
PubCompPacket.InResponseTo(pubRelQos2Packet),
DisconnectPacket.Instance);
}
async Task GetPart1SpecificSteps(IChannel channel, ReadListeningHandler readHandler)
{
int publishQoS1PacketId = 1003;
await channel.WriteAndFlushManyAsync(
new PublishPacket(QualityOfService.AtMostOnce, false, false)
{
//TopicName = string.Format("devices/{0}/messages/log/verbose/", clientId),
TopicName = $"devices/{this.clientId}/messages/events",
Payload = Unpooled.WrappedBuffer(Encoding.UTF8.GetBytes("{\"test\": \"telemetry-QoS0\"}"))
},
new PublishPacket(QualityOfService.AtLeastOnce, false, false)
{
PacketId = publishQoS1PacketId,
TopicName = $"devices/{this.clientId}/messages/events",
Payload = Unpooled.WrappedBuffer(Encoding.UTF8.GetBytes("{\"test\": \"telemetry\"}"))
});
Packet[] packets = (await Task.WhenAll(Enumerable.Repeat(0, 6).Select(_ => readHandler.ReceiveAsync())))
.Select(Assert.IsAssignableFrom <Packet>)
.ToArray();
PubAckPacket pubAckPacket = Assert.Single(packets.OfType <PubAckPacket>());
Assert.Equal(publishQoS1PacketId, pubAckPacket.PacketId);
PublishPacket publishQoS0Packet = Assert.Single(packets.OfType <PublishPacket>().Where(x => x.QualityOfService == QualityOfService.AtMostOnce));
this.AssertPacketCoreValue(publishQoS0Packet, "tips", NotificationQoS0Content);
PublishPacket[] publishQoS1Packets = packets.OfType <PublishPacket>().Where(x => x.QualityOfService == QualityOfService.AtLeastOnce).ToArray();
Assert.Equal(2, publishQoS1Packets.Length);
var qos1Notification = Assert.Single(publishQoS1Packets, x => x.TopicName.EndsWith("firmware-update"));
this.AssertPacketCoreValue(qos1Notification, "firmware-update", NotificationQoS1Content);
var methodCall = Assert.Single(publishQoS1Packets, x => x.TopicName.EndsWith("commands"));
this.AssertPacketCoreValue(methodCall, "commands", MethodCallContent);
PublishPacket[] publishQoS2Packets = packets.OfType <PublishPacket>().Where(x => x.QualityOfService == QualityOfService.ExactlyOnce).ToArray();
Assert.Equal(2, publishQoS2Packets.Length);
PublishPacket publishQoS2Packet1 = publishQoS2Packets[0];
this.AssertPacketCoreValue(publishQoS2Packet1, "critical-alert", NotificationQoS2Content);
PublishPacket publishQoS2Packet2 = publishQoS2Packets[1];
this.AssertPacketCoreValue(publishQoS2Packet2, string.Empty, NotificationQoS2Content2);
await channel.WriteAndFlushManyAsync(
PubAckPacket.InResponseTo(qos1Notification),
PubAckPacket.InResponseTo(methodCall),
PubRecPacket.InResponseTo(publishQoS2Packet1),
PubRecPacket.InResponseTo(publishQoS2Packet2));
var pubRelQoS2Packet1 = Assert.IsAssignableFrom <PubRelPacket>(await readHandler.ReceiveAsync());
Assert.Equal(publishQoS2Packet1.PacketId, pubRelQoS2Packet1.PacketId);
var pubRelQoS2Packet2 = Assert.IsAssignableFrom <PubRelPacket>(await readHandler.ReceiveAsync());
Assert.Equal(publishQoS2Packet2.PacketId, pubRelQoS2Packet2.PacketId);
await channel.WriteAndFlushManyAsync(
PubCompPacket.InResponseTo(pubRelQoS2Packet1),
DisconnectPacket.Instance);
// device queue still contains QoS 2 packet 2 which was PUBRECed but not PUBCOMPed.
}
