[Libevent-users] evhttp and TLS hostname validation

[Patrick Pelletier <ppelletier@xxxxxxxxxx>]

I've been writing an https client using OpenSSL and libevent 2.1.2, 
using this example as a basis:

http://archives.seul.org/libevent/users/Mar-2012/msg00014.html

and it's mostly doing what I want now.  However, one thing I still need 
to do is check that the certificate has the correct hostname. I'd like 
to use this code to do it:

https://github.com/iSECPartners/ssl-conservatory

However, it's not clear to me how to work the validation function 
(validate_hostname) into evhttp's control flow.  It seems that I would 
need to call validate_hostname after the TLS handshake occurs, but 
before evhttp starts transferring data.  But, I don't know how to get 
evhttp to hand over control to me at that time, so I can call 
validate_hostname.

How have other people using https with evhttp solved this problem? Is 
there a better example that I should look at, rather than the one from 
March on the mailing list?

Thanks,

--Patrick

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