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Sends an MQTT message directly to a specific client identified by its client ID.
SendDirectMessage targets a single client ID. The receiving client does not
need to subscribe to the topic, but the receiver's policy must allow iot:Receive
on the specified topic.
Requires permission to access the SendDirectMessage action.
For more information about messaging costs, see Amazon Web Services IoT Core pricing.
This is an asynchronous operation using the standard naming convention for .NET 4.7.2 or higher.
Namespace: Amazon.IotData
Assembly: AWSSDK.IotData.dll
Version: 3.x.y.z
public virtual Task<SendDirectMessageResponse> SendDirectMessageAsync( SendDirectMessageRequest request, CancellationToken cancellationToken )
Container for the necessary parameters to execute the SendDirectMessage service method.
A cancellation token that can be used by other objects or threads to receive notice of cancellation.
| Exception | Condition |
|---|---|
| ForbiddenException | The caller isn't authorized to make the request. |
| GatewayTimeoutException | The delivery confirmation was not received from the client within the specified timeout period. |
| InternalFailureException | An unexpected error has occurred. |
| InvalidRequestException | The request is not valid. |
| RequestEntityTooLargeException | The payload exceeds the maximum size allowed. |
| ResourceNotFoundException | The specified resource does not exist. |
| ThrottlingException | The rate exceeds the limit. |
| UnauthorizedException | You are not authorized to perform this operation. |
.NET:
Supported in: 8.0 and newer, Core 3.1
.NET Standard:
Supported in: 2.0
.NET Framework:
Supported in: 4.7.2 and newer