Re: [libmicrohttpd] Terminate session with response

[Christian Grothoff]

Dea Avner,

I assume you are talking about a file *upload*, from the client to your 
HTTP server. In this case, the HTTP protocol only allows you to queue a 
response either before the upload has started (after receiving the 
header and before the server responds with 100 continue) or after the 
upload is complete. libmicrohttpd supports returning 400 in both of 
these cases. Returning 400 before the client is done with the upload is 
against the specification and thus not supported.

If possible, you should see if you can detect the failure just based on 
the client's HTTP header and return 400 immediately.

Happy hacking!

Christian

On 8/31/23 20:18, Avner Flesch wrote:
> Hi,
>
> I am implementing file download with libmicrohttpd.
> Now I am wondering - in case I have a failure during the download, is 
> there an option to terminate the session with a response, or should I 
> wait to get all the file parts, and just then send the response 
> with code "400"?
> When I am returning "MHD_NO" it terminates the connection, and the 
> response is not sent at all.
>
> Any suggestions?
>
> Thanks
>
> Avner