Ascp allows you to download a range of bytes in a file.  This operation consists of specifying the starting and ending byte range to download in the command-line.  For example, the command line option is -@[start_byte]:[end_byte].  This is achieved by setting the range on the remote location when using the FASP Manager SDK.

To demonstrate this, an example in C++ and Java is presented below. Note: When you are developing a transfer application for byte range transfers, this only applies to a download on a single file. Therefore, the remote location must be defined as the source in the job order and only one file can be added.

C++ Byte Range Download

 

Java Byte Range Download

 
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