ssl: add support for SSL SNI

Author: Christian Betz

librabbitmq/amqp_openssl.c

@@ -204,6 +204,13 @@ static int amqp_ssl_socket_open(void *base, const char *host, int port,
  BIO_set_fd(bio, self->sockfd, BIO_NOCLOSE);
  SSL_set_bio(self->ssl, bio, bio);
 
+ status = SSL_set_tlsext_host_name(self->ssl, host);
+ if (!status) {
+ self->internal_error = SSL_get_error(self->ssl, status);
+ status = AMQP_STATUS_SSL_ERROR;
+ goto error_out2;
+ }
+
 start_connect:
  status = SSL_connect(self->ssl);
  if (status != 1) {