Large files download fails after 1 hour

Hi pp111​, 

Thank you for providing this information. 

The connections for these Dropbox API download calls are limited to one hour. 

If you need to perform downloads over longer periods (i.e., more than an hour), please issue multiple download requests, each lasting no longer than an hour, to retrieve a portion of the file per request. You can then reassemble the file afterward.

To support downloading large files in parts, the API supports Range Retrieval Requests, which allow files to be downloaded in segments. Here’s a sample curl command for reference:

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=0-2"

The above curl command will download only the first three bytes of the file at /test.txt. You can adjust the byte range to download any portion of the file, such as when continuing with the next portion.