On 4/28/2019 1:27 PM, Christopher Head via curl-library wrote: > I’m trying to PUT a sub-interval of a file. In simple terms, for the > sake of example, let’s say I have a 4-byte file and I want to PUT the > middle two bytes.
That's not allowed. To PUT is to completely replace a resource. PATCH [1] was created to modify an existing resource but the problem is race conditions and support. In other words you go to modify a resource and someone else could also be modifying the resource (solution If-Match I think), or the server may not support it (check OPTIONS on the resource for supported types). Though libcurl doesn't have native support for it, you could probably build a custom request. I really don't know a lot about it, hopefully others here know more. I'd read the RFC if you have a chance it looks like a short read. [1]: https://tools.ietf.org/html/rfc5789
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