digraph ft_send {
	fontname="Helvetica,Arial,sans-serif"
	node [fontname="Helvetica,Arial,sans-serif"]
	edge [fontname="Helvetica,Arial,sans-serif"]

	label="FT1_Receiver";
	labelloc="t";

	start [label="start   | we got FT_INIT"];
	fail [shape=doublecircle];
	done [shape=doublecircle];

	// peer offline (how)
	start -> fail [label="peer offline"]

	start -> starting [label="send FT_INIT_ACK"];
	starting -> starting [label="if timeout or get FT_INIT send FT_INIT_ACK"];
	starting -> got_data [label="got FT_DATA"];
	starting -> fail [label="if timeout too often"];

	got_data -> fail [label="peer offline"];

	subgraph cluster_data {
		label="for each data chunk";
		style=filled;

		got_data -> wait_for_all_data [label="send FT_DATA_ACK"];
	}

	wait_for_all_data -> fail [label="peer offline"];
	wait_for_all_data -> done [label="all chunks received and acked"];
}