https://github.com/rafiulgits/mqtt-client-dotnet-core
MQTTNet client implementation on ASP.NET Core. Library https://github.com/dotnet/MQTTnet
https://github.com/rafiulgits/mqtt-client-dotnet-core
mqtt mqtt-client
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MQTTNet client implementation on ASP.NET Core. Library https://github.com/dotnet/MQTTnet
- Host: GitHub
- URL: https://github.com/rafiulgits/mqtt-client-dotnet-core
- Owner: rafiulgits
- Created: 2020-04-13T10:54:03.000Z (over 5 years ago)
- Default Branch: master
- Last Pushed: 2022-11-15T09:25:09.000Z (almost 3 years ago)
- Last Synced: 2025-07-20T22:22:55.640Z (3 months ago)
- Topics: mqtt, mqtt-client
- Language: C#
- Homepage:
- Size: 14.6 KB
- Stars: 71
- Watchers: 1
- Forks: 23
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
README
# MQTT Client ASP.NET Core
This repository is an example of how to use [MQTTnet](https://github.com/chkr1011/MQTTnet) client in ASP.NET core web application with services.
MQTT Client is running in `MqttClientService` by`IHostedService`, and it is a `singleton` service.
To access `MqttClientService` from other external services inject `MQTTClientServiceProvider` in service constructor.
Here is an example
```csharp
public class ExtarnalService
{
private readonly IMqttClientService mqttClientService;
public ExtarnalService(MqttClientServiceProvider provider)
{
mqttClientService = provider.MqttClientService;
}
}
```
**Configuration**
Configure your MQTT settings in `appSettings.json`
```json
"BrokerHostSettings": {
"Host": "localhost",
"Port": 1883
},
"ClientSettings": {
"Id": "5eb020f043ba8930506acbdd",
"UserName": "rafiul",
"Password": "12345678"
},
```
**Reconnecting**
Reference Code：https://github.com/dotnet/MQTTnet/blob/master/Samples/Client/Client_Connection_Samples.cs
The implemented code is in `MqttClientService.cs`
1. Reconnect_Using_Event
```c#
public async Task HandleDisconnectedAsync(MqttClientDisconnectedEventArgs eventArgs)
{
if (e.ClientWasConnected)
{
// Use the current options as the new options.
await mqttClient.ConnectAsync(mqttClient.Options);
}
}
```
"Reconnect_Using_Event" is not recommended, so the code is commented out ,the following code is recommended "Reconnect_Using_Time"
2. Reconnect_Using_Timer
```c#
public async Task StartAsync(CancellationToken cancellationToken)
{
await mqttClient.ConnectAsync(options);
/*
* This sample shows how to reconnect when the connection was dropped.
* This approach uses a custom Task/Thread which will monitor the connection status.
* This is the recommended way but requires more custom code!
*/
_ = Task.Run(
async () =>
{
// // User proper cancellation and no while(true).
while (true)
{
try
{
// This code will also do the very first connect! So no call to _ConnectAsync_ is required in the first place.
if (!await mqttClient.TryPingAsync())
{
await mqttClient.ConnectAsync(mqttClient.Options, CancellationToken.None);
// Subscribe to topics when session is clean etc.
_logger.LogInformation("The MQTT client is connected.");
}
}
catch (Exception ex)
{
// Handle the exception properly (logging etc.).
_logger.LogError(ex, "The MQTT client connection failed");
}
finally
{
// Check the connection state every 5 seconds and perform a reconnect if required.
await Task.Delay(TimeSpan.FromSeconds(5));
}
}
});
}
```
**Now do whatever you want to do with `MQTTClientService`!**