Functioning of Download Manager
How does a download manager resumes its download when its paused??What is the mechanism behind it??Can anybody explain it clearly??
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As I understand it:
The download manager records how much it's retrieved, and save this every few seconds / few minutes / when paused. When resumed, it uses the Range headers for partial GET requests (for http - or equivalents for ftp/sftp) and appends what it receives to the file saved so far. Not all web servers support partial gets, but the majority do. See e.g. HTTP/1.1: Method Definitions |
Thank you sir.you cleared my doubt:)
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