From dbfdc942d74d33fad669ed9936e4ba082787af51 Mon Sep 17 00:00:00 2001
From: Green Sky <green@g-s.xyz>
Date: Tue, 11 Oct 2022 14:13:56 +0200
Subject: [PATCH] send graph

---
 ft_send.dot | 65 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 65 insertions(+)
 create mode 100644 ft_send.dot

diff --git a/ft_send.dot b/ft_send.dot
new file mode 100644
index 0000000..ecbb2b7
--- /dev/null
+++ b/ft_send.dot
@@ -0,0 +1,65 @@
+digraph ft_send {
+	fontname="Helvetica,Arial,sans-serif"
+	node [fontname="Helvetica,Arial,sans-serif"]
+	edge [fontname="Helvetica,Arial,sans-serif"]
+
+	//layout=fdp
+	//rankdir = LR
+
+	start;
+	fail [shape=doublecircle];
+	done [shape=doublecircle];
+
+	// peer offline (how)
+	start -> fail [label="peer offline"]
+
+	subgraph cluster_init {
+		label="Send Init";
+
+		style=filled;
+		//color=lightgrey;
+
+
+		// if it fails
+		sent_init1 -> sent_init2 [label="send FT_INIT"]
+
+		// if it fails again
+		sent_init2 -> sent_init3 [label="send FT_INIT"]
+
+	}
+
+	start -> sent_init1 [label="send FT_INIT"]
+
+	// peer offline (how)
+	sent_init1 -> fail [label="peer offline"]
+
+	// peer offline (how)
+	sent_init2 -> fail [label="peer offline"]
+
+	// give up after 3. attempt
+	sent_init3 -> fail [label="no ack / peer offline"]
+
+	// got an ack after an init
+	sent_init1 -> have_data [label="got init_ack"]
+	sent_init2 -> have_data [label="got init_ack"]
+	sent_init3 -> have_data [label="got init_ack"]
+
+	subgraph cluster_data {
+		label="for each data chunk";
+		style=filled;
+		//node [style=filled];
+
+		have_data -> data_awaiting_ack [label="send FT_DATA"];
+		data_awaiting_ack -> data_wait_for_all [label="get FT_DATA_ACK"];
+		data_awaiting_ack -> have_data [label="no FT_DATA_ACK"];
+
+		data_wait_for_all;
+	}
+
+	// fail
+	have_data -> fail [label="peer offline"]
+	data_wait_for_all -> fail [label="peer offline"]
+
+	data_wait_for_all -> done [label="all chunks acked"];
+}
+