From 55495e9b4cfaacd2516cde9af6bc00a3269f7513 Mon Sep 17 00:00:00 2001
From: Razvan Deaconescu <razvan.deaconescu@cs.pub.ro>
Date: Mon, 28 Feb 2011 17:22:04 +0200
Subject: [PATCH] Utils-eurocon: inactive timespan for session

check download/upload speed evolution
---
 .../test/process/get_inactive_timespan        | 52 +++++++++++++++++++
 1 file changed, 52 insertions(+)
 create mode 100755 Utils/test-socket-signal/test/process/get_inactive_timespan

diff --git a/Utils/test-socket-signal/test/process/get_inactive_timespan b/Utils/test-socket-signal/test/process/get_inactive_timespan
new file mode 100755
index 0000000..0d7a55c
--- /dev/null
+++ b/Utils/test-socket-signal/test/process/get_inactive_timespan
@@ -0,0 +1,52 @@
+#!/usr/bin/awk -f
+
+#
+# find timespan of inactivity
+#
+# provide evolution of speed in a column at standard input
+#
+# start point is when speed is lower with MAX_SPEED/RATE than maximum speed
+# that far; stop point is when download speed is higher with MAX_SPEED/RATE
+# than minimium speed that far
+#
+
+BEGIN	{
+	MAX_SPEED = 100.0;
+	RATE = 0.15;
+	THRESHOLD = MAX_SPEED * RATE;
+	STATE_NO_STATE = 0;
+	STATE_GET_INACTIVITY = 1;
+	STATE_GET_ACTIVITY = 2;
+
+	state = STATE_GET_INACTIVITY;
+	max_speed_so_far = 0;
+	min_speed_so_far = MAX_SPEED;
+	counter = 0;
+	start_time = 0;
+	stop_time = 0;
+}
+
+{
+	curr_speed = $1;
+	if (state == STATE_GET_INACTIVITY) {
+		if (curr_speed > max_speed_so_far)
+			max_speed_so_far = curr_speed;
+		else if (curr_speed < max_speed_so_far - THRESHOLD) {
+			start = counter;
+			state = STATE_GET_ACTIVITY;
+		}
+	}
+	else if (state == STATE_GET_ACTIVITY) {
+		if (curr_speed < min_speed_so_far)
+			min_speed_so_far = curr_speed;
+		else if (curr_speed > min_speed_so_far + THRESHOLD) {
+			stop = counter;
+			state = STATE_NOSTATE;
+		}
+	}
+	counter++;
+}
+
+END	{
+	printf "start: %d, stop: %d, diff: %d\n", start, stop, stop - start;
+}
-- 
2.20.1