get Temp File MD5
Retrieves the MD5 key for file resumption, used to identify the file being downloaded. The MD5 is generated based on appKey, userId, and messageId.
Return
The save path
Parameters
context
The context
message Id
The message ID
Retrieves the temporary filename for resumable file download, used to identify the file being downloaded. The filename is generated by performing MD5 on the appKey, userId, and the unique identifier tag.
Return
The save path
Parameters
context
The context
tag
The unique identifier for the file