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Add samples.

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This commit is contained in:
Christian
2022-10-16 11:12:08 +02:00
parent a3227a444a
commit 431142471f
1 changed files with 90 additions and 40 deletions
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Samples/Client/Client_Subscribe_Samples.cs
+90 -40
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@@ -8,6 +8,7 @@
using MQTTnet.Client;
using MQTTnet.Packets;
using MQTTnet.Protocol;
using MQTTnet.Samples.Helpers;
namespace MQTTnet.Samples.Client;
@@ -24,9 +25,7 @@ public static class Client_Subscribe_Samples
using (var mqttClient = mqttFactory.CreateMqttClient())
{
var mqttClientOptions = new MqttClientOptionsBuilder()
.WithTcpServer("broker.hivemq.com")
.Build();
var mqttClientOptions = new MqttClientOptionsBuilder().WithTcpServer("broker.hivemq.com").Build();
// Setup message handling before connecting so that queued messages
// are also handled properly. When there is no event handler attached all
@@ -42,7 +41,11 @@ public static class Client_Subscribe_Samples
await mqttClient.ConnectAsync(mqttClientOptions, CancellationToken.None);
var mqttSubscribeOptions = mqttFactory.CreateSubscribeOptionsBuilder()
.WithTopicFilter(f => { f.WithTopic("mqttnet/samples/topic/2"); })
.WithTopicFilter(
f =>
{
f.WithTopic("mqttnet/samples/topic/2");
})
.Build();
await mqttClient.SubscribeAsync(mqttSubscribeOptions, CancellationToken.None);
@@ -54,35 +57,6 @@ public static class Client_Subscribe_Samples
}
}
public static async Task Subscribe_Topic()
{
/*
* This sample subscribes to a topic.
*/
var mqttFactory = new MqttFactory();
using (var mqttClient = mqttFactory.CreateMqttClient())
{
var mqttClientOptions = new MqttClientOptionsBuilder()
.WithTcpServer("broker.hivemq.com")
.Build();
await mqttClient.ConnectAsync(mqttClientOptions, CancellationToken.None);
var mqttSubscribeOptions = mqttFactory.CreateSubscribeOptionsBuilder()
.WithTopicFilter(f => { f.WithTopic("mqttnet/samples/topic/1"); })
.Build();
var response = await mqttClient.SubscribeAsync(mqttSubscribeOptions, CancellationToken.None);
Console.WriteLine("MQTT client subscribed to topic.");
// The response contains additional data sent by the server after subscribing.
response.DumpToConsole();
}
}
public static async Task Send_Responses()
{
/*
@@ -100,22 +74,98 @@ public static class Client_Subscribe_Samples
// Now respond to the broker with a reason code other than success.
args.ReasonCode = MqttApplicationMessageReceivedReasonCode.ImplementationSpecificError;
args.ResponseReasonString = "That did not work!";
// User properties require MQTT v5!
args.ResponseUserProperties.Add(new MqttUserProperty("My", "Data"));
// Now the broker will resend the message again.
return Task.CompletedTask;
};
var mqttClientOptions = new MqttClientOptionsBuilder()
.WithTcpServer("broker.hivemq.com")
.Build();
var mqttClientOptions = new MqttClientOptionsBuilder().WithTcpServer("broker.hivemq.com").Build();
await mqttClient.ConnectAsync(mqttClientOptions, CancellationToken.None);
var mqttSubscribeOptions = mqttFactory.CreateSubscribeOptionsBuilder()
.WithTopicFilter(f => { f.WithTopic("mqttnet/samples/topic/1"); })
.WithTopicFilter(
f =>
{
f.WithTopic("mqttnet/samples/topic/1");
})
.Build();
var response = await mqttClient.SubscribeAsync(mqttSubscribeOptions, CancellationToken.None);
Console.WriteLine("MQTT client subscribed to topic.");
// The response contains additional data sent by the server after subscribing.
response.DumpToConsole();
}
}
public static async Task Subscribe_Multiple_Topics()
{
/*
* This sample subscribes to several topics in a single request.
*/
var mqttFactory = new MqttFactory();
using (var mqttClient = mqttFactory.CreateMqttClient())
{
var mqttClientOptions = new MqttClientOptionsBuilder().WithTcpServer("broker.hivemq.com").Build();
await mqttClient.ConnectAsync(mqttClientOptions, CancellationToken.None);
// Create the subscribe options including several topics with different options.
// It is also possible to all of these topics using a dedicated call of _SubscribeAsync_ per topic.
var mqttSubscribeOptions = mqttFactory.CreateSubscribeOptionsBuilder()
.WithTopicFilter(
f =>
{
f.WithTopic("mqttnet/samples/topic/1");
})
.WithTopicFilter(
f =>
{
f.WithTopic("mqttnet/samples/topic/2").WithNoLocal();
})
.WithTopicFilter(
f =>
{
f.WithTopic("mqttnet/samples/topic/3").WithRetainHandling(MqttRetainHandling.SendAtSubscribe);
})
.Build();
var response = await mqttClient.SubscribeAsync(mqttSubscribeOptions, CancellationToken.None);
Console.WriteLine("MQTT client subscribed to topics.");
// The response contains additional data sent by the server after subscribing.
response.DumpToConsole();
}
}
public static async Task Subscribe_Topic()
{
/*
* This sample subscribes to a topic.
*/
var mqttFactory = new MqttFactory();
using (var mqttClient = mqttFactory.CreateMqttClient())
{
var mqttClientOptions = new MqttClientOptionsBuilder().WithTcpServer("broker.hivemq.com").Build();
await mqttClient.ConnectAsync(mqttClientOptions, CancellationToken.None);
var mqttSubscribeOptions = mqttFactory.CreateSubscribeOptionsBuilder()
.WithTopicFilter(
f =>
{
f.WithTopic("mqttnet/samples/topic/1");
})
.Build();
var response = await mqttClient.SubscribeAsync(mqttSubscribeOptions, CancellationToken.None);