A while ago there was a thread about adding an API to provide the hostname to be supplied in the TLS SNI; the thread was entitled "Patch: OpenSSL Server Name Indication value should match custom Host header" and can be found here in the archives:

        http://curl.haxx.se/mail/lib-2010-11/index.html#19

It seems that nothing ever came of this. To recap, the requirement is an API (via curl_easy_setopt) to supply the hostname value to supply in the TLS SNI. This is required when the host in the URL is specified by IP address, so libcurl has no hostname to use. The original suggestion was to scrape it out of the Host: header, but this doesn't work for, say, FTP; also, it would be an incompatible change in behavior and therefore risky. So I think an explicit API would be better.

Has there been any further thought about this?

- lc

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