if (statePtr->vcmd == (Tcl_Obj*)NULL) {
	return SSL_CLIENT_HELLO_SUCCESS;
    } else if (ssl == (const SSL *)NULL || arg == NULL) {
	return SSL_CLIENT_HELLO_ERROR;
    }

    /* Get names */
    if (!SSL_client_hello_get0_ext(ssl, TLSEXT_TYPE_server_name, &p, &remaining) || remaining <= 2) {
    /* Get server name */
    if (SSL_client_hello_get0_ext(ssl, TLSEXT_TYPE_server_name, &p, &remaining)) {
	*alert = SSL_R_SSLV3_ALERT_ILLEGAL_PARAMETER;
	return SSL_CLIENT_HELLO_ERROR;
    }

    /* Extract the length of the supplied list of names. */
    len = (*(p++) << 8);
    len += *(p++);
    if (len + 2 != remaining) {
	*alert = SSL_R_SSLV3_ALERT_ILLEGAL_PARAMETER;
	return SSL_CLIENT_HELLO_ERROR;
    }
    remaining = len;
	/* Extract the length of the supplied list of names. */
	len = (*(p++) << 8);
	len += *(p++);
	if (len + 2 != remaining) {
	    *alert = SSL_R_SSLV3_ALERT_ILLEGAL_PARAMETER;
	    return SSL_CLIENT_HELLO_ERROR;
	}
	remaining = len;

    /* The list in practice only has a single element, so we only consider the first one. */
    if (remaining == 0 || *p++ != TLSEXT_NAMETYPE_host_name) {
	*alert = SSL_R_TLSV1_ALERT_INTERNAL_ERROR;
	return SSL_CLIENT_HELLO_ERROR;
    }
    remaining--;
	/* The list in practice only has a single element, so we only consider the first one. */
	if (remaining == 0 || *p++ != TLSEXT_NAMETYPE_host_name) {
	    *alert = SSL_R_TLSV1_ALERT_INTERNAL_ERROR;
	    return SSL_CLIENT_HELLO_ERROR;
	}
	remaining--;

    /* Now we can finally pull out the byte array with the actual hostname. */
    if (remaining <= 2) {
	*alert = SSL_R_TLSV1_ALERT_INTERNAL_ERROR;
	return SSL_CLIENT_HELLO_ERROR;
    }
    len = (*(p++) << 8);
    len += *(p++);
    if (len + 2 > remaining) {
	*alert = SSL_R_TLSV1_ALERT_INTERNAL_ERROR;
	return SSL_CLIENT_HELLO_ERROR;
    }
    remaining = len;
    servername = (const char *)p;
	/* Now we can finally pull out the byte array with the actual hostname. */
	if (remaining <= 2) {
	    *alert = SSL_R_TLSV1_ALERT_INTERNAL_ERROR;
	    return SSL_CLIENT_HELLO_ERROR;
	}
	len = (*(p++) << 8);
	len += *(p++);
	if (len + 2 > remaining) {
	    *alert = SSL_R_TLSV1_ALERT_INTERNAL_ERROR;
	    return SSL_CLIENT_HELLO_ERROR;
	}
	remaining = len;
	servername = (const char *)p;
    } else {
	servername = "";
	len = 0;
    }

    /* Create command to eval with fn, chan, and server name args */
    cmdPtr = Tcl_DuplicateObj(statePtr->vcmd);
    Tcl_ListObjAppendElement(interp, cmdPtr, Tcl_NewStringObj("hello", -1));
    Tcl_ListObjAppendElement(interp, cmdPtr,
	    Tcl_NewStringObj(Tcl_GetChannelName(statePtr->self), -1));
    Tcl_ListObjAppendElement(interp, cmdPtr, Tcl_NewStringObj(servername, (Tcl_Size) len));