Idm

Internet Download Manager

Internet Download Manager

             Most of the servers allow more than one connection to a SINGLE FILE STREAM [ any file consists of stream of bits ] from any client IP address requesting the file.

IDM first checks whether multiple connections to the file can be made or not. 

[ This can be checked using the ‘accept-ranges’ header in the server response and then subsequently using the ‘Range’ header in the GET request to the server. ]

If yes, it can download in parts 

otherwise it downloads the file linearly and at the same time so that the download can't be paused.