Tcl_DStringFree(&ds);
	    Tcl_AppendResult(interp,
			     "unable to set certificate file ", certfile, ": ",
			     REASON(), (char *) NULL);
	    SSL_CTX_free(ctx);
	    return (SSL_CTX *)0;
	}
    } else if (cert != NULL) {
	if (SSL_CTX_use_certificate_ASN1(ctx, cert_len, cert) <= 0) {
	    Tcl_DStringFree(&ds);
	    Tcl_AppendResult(interp,
			     "unable to set certificate: ",
			     REASON(), (char *) NULL);
	    SSL_CTX_free(ctx);
	    return (SSL_CTX *)0;
	}
    } else {
	certfile = (char*)X509_get_default_cert_file();

	if (SSL_CTX_use_certificate_file(ctx, certfile,
					SSL_FILETYPE_PEM) <= 0) {
#if 0
	    Tcl_DStringFree(&ds);
	    Tcl_AppendResult(interp,
			     "unable to use default certificate file ", certfile, ": ",
			     REASON(), (char *) NULL);
	    SSL_CTX_free(ctx);
	    return (SSL_CTX *)0;
#endif
	}
    }

    /* set our private key */
    if (keyfile == NULL && key == NULL) {
	keyfile = certfile;
    }

    if (keyfile != NULL) {
	/* get the private key associated with this certificate */
	if (keyfile == NULL) {
	    keyfile = certfile;
	}

	if (SSL_CTX_use_PrivateKey_file(ctx, F2N( keyfile, &ds),
					SSL_FILETYPE_PEM) <= 0) {

	if (!SSL_CTX_check_private_key(ctx)) {
	    Tcl_AppendResult(interp,
			     "private key does not match the certificate public key",
			     (char *) NULL);
	    SSL_CTX_free(ctx);
	    return (SSL_CTX *)0;
	}
    } else if (key != NULL) {












	if (SSL_CTX_use_PrivateKey_ASN1(EVP_PKEY_RSA, ctx, key,key_len) <= 0) {
	    Tcl_DStringFree(&ds);
	    /* flush the passphrase which might be left in the result */
	    Tcl_SetResult(interp, NULL, TCL_STATIC);
	    Tcl_AppendResult(interp,
			     "unable to set public key: ",
			     REASON(), (char *) NULL);
	    SSL_CTX_free(ctx);
	    return (SSL_CTX *)0;
	}


    }












    /* Set verification CAs */
    Tcl_DStringInit(&ds);
    Tcl_DStringInit(&ds1);
    if (!SSL_CTX_load_verify_locations(ctx, F2N(CAfile, &ds), F2N(CAdir, &ds1)) ||
	!SSL_CTX_set_default_verify_paths(ctx)) {
#if 0
	Tcl_DStringFree(&ds);
	Tcl_DStringFree(&ds1);
	/* Don't currently care if this fails */
	Tcl_AppendResult(interp, "SSL default verify paths: ",
		REASON(), (char *) NULL);
	SSL_CTX_free(ctx);
	return (SSL_CTX *)0;
#endif
    }

    /* https://sourceforge.net/p/tls/bugs/57/ */
    /* XXX:TODO: Let the user supply values here instead of something that exists on the filesystem */
    if ( CAfile != NULL ) {
        STACK_OF(X509_NAME) *certNames = SSL_load_client_CA_file( F2N(CAfile, &ds) );
	if ( certNames != NULL ) { 
	    SSL_CTX_set_client_CA_list(ctx, certNames );
	}
    }