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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.
For .NET Core this operation is only available in asynchronous form. Please refer to SendDirectMessageAsync.
Namespace: Amazon.IotData
Assembly: AWSSDK.IotData.dll
Version: 3.x.y.z
public virtual SendDirectMessageResponse SendDirectMessage( SendDirectMessageRequest request )
Container for the necessary parameters to execute the SendDirectMessage service method.
| 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 Framework:
Supported in: 4.7.2 and newer