+/*
+ * Async function to connect to a specific RPC program/version
+ * Function returns
+ * 0 : The connection was initiated. Once the connection establish finishes, the callback will be invoked.
+ * <0 : An error occured when trying to set up the connection. The callback will not be invoked.
+ *
+ * When the callback is invoked, status indicates the result:
+ * RPC_STATUS_SUCCESS : The tcp connection was successfully established.
+ * data is NULL.
+ * RPC_STATUS_ERROR : The connection failed to establish.
+ * data is the erro string.
+ * RPC_STATUS_CANCEL : The connection attempt was aborted before it could complete.
+ * : data is NULL.
+ */
+int rpc_connect_program_async(struct rpc_context *rpc, char *server, int program, int version, rpc_cb cb, void *private_data);