libcurlssl

Is there something like libcurlssl for the easy creation of servers?

You mean like mod_ssl or apache-ssl ?
Or your own home-grown server?

I haven't found anything like that yet.

Yes, basically something to write home-grown servers that can serve a couple of thousand users. Communication should go through a secure channel, and "the thing" should not only serve web pages, but also enable the usage of a proprietary, self-made protocol.

I know, it's asking a lot, and sounds like the kind of thing you'd probably do in Java or maybe Python (Medusa, Twisted).