+/*
+ * Sends a close message to the websocket of 'wsj1'.
+ * The close message is sent with the 'code' and 'text'.
+ * 'text' can be NULL.
+ * Return 0 in case of success. Otherwise, returns -1 and set errno.
+ */
+extern int afb_wsj1_close(struct afb_wsj1 *wsj1, uint16_t code, const char *text);
+