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GoParallelDownload

Golang basic file downloader using Accept-Ranges for parallel downloads to download a file in efficient way with the help of concurrency.

If a URL supports http header - Accept-Ranges, it will be divided into several parts and download it concurrently. Otherwise, the files will still be downloaded but not in parallel

QuickStart

go get -u github.com/cdhtlr/GoParallelDownload

how does it work?

  • Gets head of http response
  • Initializes go routines for partial downloads if range downloads are supported
  • Run them simultaneously until all is Done

Compile command

CGO_ENABLED=0 GOOS=linux go build -ldflags="-s -w -extldflags=-static" -a -o downloader.exe .

Disclaimer

This program comes with no warranty. You must use this program at your own risk. This program slightly copies the source code from Raviraa Speedtest

Note

  • Using a large number of connections to a single URL can lead to DOS attacks.

Todo

  • Performs memory efficiency without debug.FreeOSMemory()