[libmicrohttpd] large incremental responses

[Erik Smith]

If I want to send a large response that takes time to generate and have the
response sent incrementally in a push style (regular write calls in
synchronous code, not callbacks) so that the client doesn't time out, how
would I do that?  Is that something I'm going to have to write some
concurrency mechanism for so that I can use a callback or is there a
simpler way?