Description of Fields Commonly Used
These fields may appear in different types of data. They represent the same meaning unless specified.
| Key | Type | meaning |
|---|---|---|
| SID | Int64 | School ID |
| CourseID | Int64 | Course ID |
| ClassID | Int64 | Class ID |
| Cmd | Int32或String | Message type |
| CloseTime | Int64 | Closing time for class |
| StartTime | Int64 | Class start time |
| _id | String | The message identifier |
| TimeStamp | Int64 | School certification time stamp |
| SafeKey | String | School certification security key md5(SECRET + TimeStamp) |
Other common fields
| Key | Type | meaning |
|---|---|---|
| ActionTime | Int64 | Action time stamp |
| SourceUID | Int64 | The originator ID，0 expression |
| TargetUID | Int64 | The target user ID，0 There is no target, the actual target is all the users in the classroom. |