Server: get notified if transfer is aborted ?

[ottigeda]

In some code using a httplib::Server() I would like to learn when a client aborts the transfer,
or if the file was successfully and completely delivered to the client.
I did think Server::set_error_handler would do the job, but for me the error handler never gets called.
Is this a bug, or did I not fully understand what is the purpose of the error handler ?

In my test I use wget to download a bigger file from a httplib::Server(),
which serves the contents using a content provider.
When I abort the wget I expected that the error handler gets called,
but it does not do that for me.

[yhirose]

@ottigeda, Server:: set_error_handler isn't for that purpose. It is called when the path doesn't match any of registered request handlers. You can see some examples in test/test.cc. There is no way to detect such an abort event on client for now. Also it's a network error on TCP level, not but HTTP, so I am not sure of how we can report it. Do you know how other HTTP server libraries are dealing with it? If they are doing it properly, I am ok to do the similar. Or, your pull request is always welcome! :)

[PixlRainbow]

In my test I use wget to download a bigger file from a httplib::Server(),
which serves the contents using a content provider.

You can write your content provider to set a global flag to indicate that a transfer is complete if the last batch of data has been written to sink. There is still a possibility that an abort will not be caught if a client aborts halfway through the transfer of the last batch, but at least you will be catching aborts between any other batch.