Invalidate HTTP download if error or corrupted
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I have a Django view that uses a StreamingHttpResponse to return a possibly large file (as a download). Near the end of streaming I check the integrity of the content against an HMAC signature. If that fails, the stream simply stops and the user still has most of the file saved. Is there any sort of way to get the browser to toss out what it's downloaded so far?
Right now I have it sending a "Content-Length" header, but the fact that it stops before it's reached that length doesn't seem to effect anything.
I read about using a "Trailer" header and then putting something in the trailer to indicate that the download should not be trusted, but I don't think there's any sort of built-in support in browsers to do anything with that (that I know of).
django http http-headers
asked Nov 19 at 20:06
Tim Tisdall
6,82623060
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I have a Django view that uses a StreamingHttpResponse to return a possibly large file (as a download). Near the end of streaming I check the integrity of the content against an HMAC signature. If that fails, the stream simply stops and the user still has most of the file saved. Is there any sort of way to get the browser to toss out what it's downloaded so far?
Right now I have it sending a "Content-Length" header, but the fact that it stops before it's reached that length doesn't seem to effect anything.
I read about using a "Trailer" header and then putting something in the trailer to indicate that the download should not be trusted, but I don't think there's any sort of built-in support in browsers to do anything with that (that I know of).
django http http-headers
asked Nov 19 at 20:06
Tim Tisdall
6,82623060
add a comment |
up vote
0
down vote
favorite
up vote
0
down vote
favorite
I have a Django view that uses a StreamingHttpResponse to return a possibly large file (as a download). Near the end of streaming I check the integrity of the content against an HMAC signature. If that fails, the stream simply stops and the user still has most of the file saved. Is there any sort of way to get the browser to toss out what it's downloaded so far?
Right now I have it sending a "Content-Length" header, but the fact that it stops before it's reached that length doesn't seem to effect anything.
I read about using a "Trailer" header and then putting something in the trailer to indicate that the download should not be trusted, but I don't think there's any sort of built-in support in browsers to do anything with that (that I know of).
django http http-headers
asked Nov 19 at 20:06
Tim Tisdall
6,82623060
I have a Django view that uses a StreamingHttpResponse to return a possibly large file (as a download). Near the end of streaming I check the integrity of the content against an HMAC signature. If that fails, the stream simply stops and the user still has most of the file saved. Is there any sort of way to get the browser to toss out what it's downloaded so far?
Right now I have it sending a "Content-Length" header, but the fact that it stops before it's reached that length doesn't seem to effect anything.
I read about using a "Trailer" header and then putting something in the trailer to indicate that the download should not be trusted, but I don't think there's any sort of built-in support in browsers to do anything with that (that I know of).
django http http-headers
django http http-headers
asked Nov 19 at 20:06
Tim Tisdall
6,82623060
asked Nov 19 at 20:06
Tim Tisdall
6,82623060
asked Nov 19 at 20:06
Tim Tisdall
6,82623060
asked Nov 19 at 20:06
Tim Tisdall
6,82623060
asked Nov 19 at 20:06
Tim Tisdall
6,82623060
6,82623060
add a comment |
add a comment |
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