- Release Notes and Announcements
- Product Introduction
- Getting Started
- Console Guide
- Product Management
- Rule Engine
- Overview
- Data Processing
- Rule Function
- Data Forwarding to Another Topic
- Data Forwarding to Third-Party Service
- Data Forwarding to CKafka
- Data Forwarding to TDMQ
- Data Forwarding to CTSDB
- Data Forwarding to TencentDB for MySQL
- Data Forwarding to TencentDB for MongoDB
- Data Forwarding to Tencent CloudBase
- Data Forwarding to TDSQL for MySQL
- Sub-account Access to IoT Hub
- Firmware Upgrade
- Resource Management
- Certificate Management
- Developer Manual
- Device Connection Manual
- API Documentation
- FAQs
- IoT Hub Policy
- Glossary
- Release Notes and Announcements
- Product Introduction
- Getting Started
- Console Guide
- Product Management
- Rule Engine
- Overview
- Data Processing
- Rule Function
- Data Forwarding to Another Topic
- Data Forwarding to Third-Party Service
- Data Forwarding to CKafka
- Data Forwarding to TDMQ
- Data Forwarding to CTSDB
- Data Forwarding to TencentDB for MySQL
- Data Forwarding to TencentDB for MongoDB
- Data Forwarding to Tencent CloudBase
- Data Forwarding to TDSQL for MySQL
- Sub-account Access to IoT Hub
- Firmware Upgrade
- Resource Management
- Certificate Management
- Developer Manual
- Device Connection Manual
- API Documentation
- FAQs
- IoT Hub Policy
- Glossary
Feature Overview
The resource management feature is mainly used to transfer resources between devices and the platform. The following two topics are required for this feature:
Data upstream topic (for publishing):
$resource/up/service/${productid}/${devicename}Data downstream topic (for subscribing):
$resource/down/service/${productid}/${devicename}Device Resource Upload
Step 1. Create a resource upload task on the device
1. The device sends a message in JSON format with the following content to
$resource/up/service/${productid}/${devicename} to create a device resource upload task:{"type":"create_upload_task","size":100,"name":"zxc","md5sum":"************",}
2. After successful creation, the backend returns the resource upload URL through
$resource/down/service/${productid}/${devicename} with a message in JSON format with the following content:{"type":"create_upload_task_rsp","size":100,"name":"zxc","md5sum":"************","url":"https://iothub.cos.ap-guangzhou.myqcloud.com/********"}
Step 2. Report the resource upload progress
1. Resource upload uses HTTP PUT requests, so the Base64-encoded MD5 value needs to be added to the header. During the resource upload process, the device reports the resource upload progress through
$resource/up/service/${productid}/${devicename} with a message in JSON format with the following content:{"type":"report_upload_progress","name":"zxc","progress":{"state":"uploading","percent":89,"result_code":0,"result_msg":""}}
2. The response to progress reporting is sent to the device through
$resource/down/service/${productid}/${devicename} with a message in JSON format with the following content:{"type":"report_upload_progress_rsp","result_code":0,"result_msg":"ok"}
Platform Resource Delivery
Step 1. Query the resource download URL
1. The device sends a message in JSON format with the following content through
$resource/up/service/${productid}/${devicename} to query the download task:{"type":"get_download_task"}
2. If there is a download task, the result will be delivered through
$resource/down/service/${productid}/${devicename} with a message in JSON format with the following content:{"type":"get_download_task_rsp","size":372338,"name":"AAAA","md5sum":"a567907174*****3bb9a2bb20716fd97","url":"https://iothub.cos.ap-guangzhou.myqcloud.com/********"}
Step 2. Report the resource download progress
1. The resource download progress is reported through
$resource/up/service/${productid}/${devicename} with a message in JSON format with the following content:{"type":"report_download_progress","name":"zxc","progress":{"state":"downloading","percent":89,"result_code":0,"result_msg":""}}
2. The response to progress reporting is sent to the device through
$resource/down/service/${productid}/${devicename} with a message in JSON format with the following content:{"type":"report_download_progress_rsp","result_code":0,"result_msg":"ok"}
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