Add viewer count script for cronjob and iframe in corner of viewcount, show 0 when offline with nginx try_files

.gitignore

@@ -1,2 +1,4 @@
 node_modules/
+nginx/www/stream/viewers/*
+nginx/www/stream/posters/*
 streamkeys.js

nginx/rtmp.conf

@@ -1,25 +1,33 @@
+rtmp_auto_push on;
+rtmp_auto_push_reconnect 10s;
+
 rtmp {
+
+	max_connections 1000;
+
 	server {
 		listen 172.16.0.1:1935;
 		allow 172.16.0.0/16;
 		deny all;
 		chunk_size 4096;
 		application live {
-			sync 10ms;
+#			sync 100ms;
+#			play_restart on;
 #			interleave on;
 #			wait_key on;
 #			wait_video on;
+			drop_idle_publisher 10s;
 			#dash
 			dash on;
 			dash_path /tmp/dash;
 			dash_fragment 5;
-			dash_playlist_length 60;
+			dash_playlist_length 30;
 			#hls
 			hls on;
 			hls_fragment_naming system;
 			hls_path /tmp/hls;
 			hls_fragment 5;
-			hls_playlist_length 60;
+			hls_playlist_length 30;
 			#rtmp
 			on_publish http://127.0.0.1:7069/forms/stream;
 			live on;

nginx/stream.conf

@@ -1,3 +1,4 @@
+server {
 server {
 
 	server_name stream.loki www.stream.loki;
@@ -19,19 +20,26 @@ server {
 		root /tmp/;
 	}
 
-	location /stat.html {
+	location = /streams {
 		rtmp_stat all;
 		rtmp_stat_stylesheet /stat.xsl;
-		add_header Refresh "60; $request_uri";
 	}
 
-	location /viewers.html {
+	location /stat.xsl {
 		root /var/www/stream/;
-		add_header Refresh "60; $request_uri";
 	}
 
-	location /stat.xsl {
+	location /viewers/ {
+		default_type text/plain;
+		add_header Content-Type "text/plain";
+		add_header Refresh "30; $request_uri";
+		root /var/www/stream/;
+		try_files $uri /viewers.txt =404;
+	}
+
+	location /posters/ {
 		root /var/www/stream/;
+		try_files $uri /offline.png =404;
 	}
 
 	location / {

nginx/www/stream/viewers.txt

@@ -0,0 +1 @@
+👁️ 0

viewers.sh

@@ -0,0 +1,33 @@
+#!/bin/bash
+# create text file with current viewer count on stream, based on logs
+
+# get current and 1 minute in past timestamps
+timestamp_now=$(date +'%s')
+timestamp_prev=$(date -d '1 min ago' +'%s')
+lf_now=$(date +'%d/%b/%Y:%H:%M:' -d @$timestamp_now)
+lf_prev=$(date +'%d/%b/%Y:%H:%M:' -d @$timestamp_prev)
+
+# tail the logs and get a count of viewers per streamer
+viewers=`tail -n 10000 /var/log/nginx/access.log \
+    | grep -E 'GET /(hls|dash)/[a-z0-9]+.m3u8' \
+    | grep -E "${lf_now}|${lf_prev}" \
+    | awk '{print $3 " " $7}' \
+    | sort \
+    | uniq \
+    | awk -F"/" '{print $3}' \
+    | cut -d'.' -f1 \
+	| sort \
+    | uniq -c \
+    | sed 's/[^ a-zA-Z0-9]//g' \
+    | sed 's/^\s*//' `
+
+# for each num, streamer pair, output a view number file
+while read -r line
+do
+	num=`echo $line | cut -f1 -d" "`
+	name=`echo $line | cut -f2 -d" "`
+	echo "👁️ $num" > "/var/www/stream/viewers/$name.txt"
+done <<< "$viewers"
+
+# delete any not updated viewer files (no longer live)
+find /var/www/stream/viewers/* -mmin +0.5 -exec rm {} \;