Hi, Christian 17.02.2015, 12:55, "Christian Parpart" <trapni at gmail.com>: > I am rather new to OpenSSL development, but I'd like to integrate SSL > communication in my little HTTP server. > While this one is working so far, for SNI I actually need to read out the > server certificates DNS name extenion and commonName subject. How to get CN and "subject alternative names" from cert you can see this wiki page:?http://wiki.openssl.org/index.php/Hostname_validation > But how do I come from the SSL_CTX to my X509 struct, or how to I do it else? 1.?SSL_CTX_set_verify() or SSL_set_verify(),??then in callback X509_STORE_CTX_get_current_cert() 2. SSL_get_peer_certificate() -- Best Regards, Serj Rakitov