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Forum Discussion
Download API resume
Hello,
I daily need to download a file into iOS from Dropbox using API.
The file is ~1GB.
Whether the screen saver occurs, or under some other conditions (incoming calls), then the download is aborted, I can restart it, but not resume it from where it left.
It is quite frustrating since it happens frequently.
Is there a way to resume a partial download or force dividing download into smaller parts ?
Thanks
Sure, you can use this by setting the "Range" header. You can find information on the syntax in the spec. For example, here's a call that would download only bytes 0 through 5:
curl -X POST https://content.dropboxapi.com/2/files/download \ --header "Authorization: Bearer <ACCESS_TOKEN>" \ --header "Dropbox-API-Arg: {\"path\": \"/test.txt\"}" \ --header "Range: bytes=0-5"And here's an example that would download everything from byte index 6 to the end:
curl -X POST https://content.dropboxapi.com/2/files/download \ --header "Authorization: Bearer <ACCESS_TOKEN>" \ --header "Dropbox-API-Arg: {\"path\": \"/test.txt\"}" \ --header "Range: bytes=6-"Hope this helps!
- Greg-DB
Dropbox Staff
Are you using one of the official Dropbox SDKs? If so, which one?
The API itself does support "Range Retrieval Requests", e.g., on /2/files/download, but not all of the SDKs implement that.
Hello,
thanks for your answer.
I actually using the /2/files/download API
I do not know how to add/implement "Range Retrieval Requests".
Can you provide some examples or suggestions ?
- Greg-DB
Sure, you can use this by setting the "Range" header. You can find information on the syntax in the spec. For example, here's a call that would download only bytes 0 through 5:
curl -X POST https://content.dropboxapi.com/2/files/download \ --header "Authorization: Bearer <ACCESS_TOKEN>" \ --header "Dropbox-API-Arg: {\"path\": \"/test.txt\"}" \ --header "Range: bytes=0-5"And here's an example that would download everything from byte index 6 to the end:
curl -X POST https://content.dropboxapi.com/2/files/download \ --header "Authorization: Bearer <ACCESS_TOKEN>" \ --header "Dropbox-API-Arg: {\"path\": \"/test.txt\"}" \ --header "Range: bytes=6-"Hope this helps!
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