How does one parse HTTP headers with libcurl?

libcurl reads the entire header and sends it as a single complete line to the callback.

"Continued" HTTP header lines are not allowed in the HTTP 1.1 RFC 7230 family, and they were virtually extinct even before that.

Been over a year, so I think I'll close this as "manually." Or:

If you're having cURL problems, I feel bad for you son,

You've got multi-line headers and must parse each one.