AsyncRRpc - IoT Platform - Alibaba Cloud Documentation Center

Usage notes

If you use a device that is connected to IoT Platform over Message Queuing Telemetry Transport (MQTT) by using an MQTT gateway or a GB/T 32960 gateway, you can call the AsyncRRpc operation to send a message from IoT Platform to the device.

QPS limits

You can call this operation up to 1,000 times per second per account.

Note

The Resource Access Management (RAM) users of an Alibaba Cloud account share the quota of the account.

Debugging

OpenAPI Explorer automatically calculates the signature value. For your convenience, we recommend that you call this operation in OpenAPI Explorer. OpenAPI Explorer dynamically generates the sample code of the operation for different SDKs.

Request parameters

Parameter	Type	Required	Example	Description
Action	String	Yes	AsyncRRpc	The operation that you want to perform. Set the value to AsyncRRpc.
DeviceName	String	Yes	device1	The DeviceName of the device to which you want to send the message.
ProductKey	String	Yes	aldfeSe****	The ProductKey of the product to which the device belongs.
MessageContent	String	Yes	eyJ0ZXN0IjoidGFzayBwdWIgYnJvYWRjYXN0In0=	The body of the message that you want to publish. To generate a message body, convert the raw message into binary data and perform Base64 encoding. Note IoT Platform decodes data by using the Base64 algorithm and then sends the decoded message to the device. This way, the device does not need to decode the Base64-encoded data.
TopicFullName	String	No	/a1uZfYb**/A_Vol**/user/update	The name of the custom topic of the device. If you want to send a message to a device that is connected over MQTT, you must specify this parameter. The device must have the Subscribe or Publish and Subscribe permissions on the topic. If you want to send a message to a device that is connected by using a GB/T 32960 gateway, you do not need to specify this parameter.
ExtInfo	String	No	{"commandType": 128}	The type of the command in the message. This parameter is required if you want to send a message to a device that is connected by using a GB/T 32960 gateway. Valid values: 128: query command (0x80). 129: configuration command (0x81). 130: control command on vehicle devices (0x82). For more information about how to connect a device to IoT Platform by using a GB/T 32960 gateway, see GB/T 32960 gateways.
IotInstanceId	String	No	iot-v64********	The instance ID. You can view the ID of the instance on the Overview page in the IoT Platform console. Important If your instance has an ID, you must specify the ID for this parameter. Otherwise, the call fails. If the Overview page is not displayed or your instance does not have an ID, you do not need to specify this parameter. For more information, see Overview.

In addition to the preceding operation-specific request parameters, you must specify common request parameters when you call this operation. For more information, see Common parameters.

Response parameters

Parameter	Type	Example	Description
Code	String	iot.device.InvalidFormattedDeviceName	The error code returned if the request failed. For more information, see the Error codes section of this topic.
ErrorMessage	String	The format of DeviceName is invalid.	The error message returned if the request failed.
MessageId	Long	889455942124347392	The message ID that is generated by IoT Platform when the message is sent.
RequestId	String	E55E50B7-40EE-4B6B-8BBE-D3ED55CCF565	The request ID.
Success	Boolean	true	Indicates whether the request was successful. Valid values: true false

Examples

Sample requests

https://iot.cn-shanghai.aliyuncs.com/?Action=AsyncRRpc
&DeviceName=device1
&MessageContent=dGhpcyBpcyBhbiBleGFtcGxl
&ProductKey=aldfeSe****
&IotInstanceId=iot-v64********
&<Common request parameters>

Sample success responses

XML format

<AsyncRRpcResponse>
  <RequestId>E55E50B7-40EE-4B6B-8BBE-D3ED55CCF565</RequestId>
  <Success>true</Success>
  <MessageId>889455942124347400</MessageId>
</AsyncRRpcResponse>

JSON format

{
    "RequestId": "E55E50B7-40EE-4B6B-8BBE-D3ED55CCF565",
    "Success": true,
    "MessageId": 889455942124347400
}

Error codes

HTTP status code	Error code	Error message	Description
400	iot.prod.NullProductKey	The ProductKey is empty.	ProductKey is left empty.
400	iot.prod.InvalidFormattedProductkey	The ProductKey format is incorrect.	The value of the ProductKey parameter is invalid.
400	iot.device.NullDeviceName	The deviceName is empty.	DeviceName is left empty.
400	iot.device.InvalidFormattedDeviceName	The deviceName format is incorrect.	The format of DeviceName is invalid.
400	iot.device.InactiveDevice	The device is inactive.	The device is not activated, which means that the device has never been connected to IoT Platform.
400	iot.device.OfflineDevice	The device is offline.	The device is disconnected.
400	iot.Device.NotExistedDevice	This device does not exist.	The device does not exist or is not activated.

For a list of error codes, see Service error codes.