下载时添加暂停和恢复功能

Question

I am using this approach for downloading any file from the given URL. I want to add pause and resume functionality while downloading. I tried to use channels but was not able to succeed.

Answer 1

You don't really "pause" a download. You can only cancel it. You can do that on an http.Request by doing close(req.Cancel).

"Resuming" a download is really just making the same request again, but telling the server where to start. Usually by setting a "Range" header.

This question on superuser explains a bit better how it works usually. You will probably need to provide more details if you want us to help you further.