Add scripts and example site

15 files changed, 854 insertions, 0 deletions

diff --git a/README.md b/README.md
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index 0000000..22134ea
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+++ b/README.md
@@ -0,0 +1,100 @@
+ODR-mmbTools scripts for 24/7 operation
+=======================================
+
+This repository contains a set of scripts that can be used for
+running the ODR-mmbTools in a production environment, where
+failure resilience is important.
+
+Concept
+-------
+
+The scripts themselves, all located in this folder, are independent
+of the configuration of the transmission. All configuration is
+in a separate folder called 'site'. 'examplesite' contains a sample
+configuration you can adapt.
+
+These scripts assume that all programme streams to be included in
+the multiplex are mp3 webstreams. For each programme, a URL has to
+be specified.
+
+Prerequisites
+-------------
+You need to have a working ODR-DabMux and ODR-DabMod configuration to
+use these scripts. Also several audio-related tools are necessary
+(mplayer, gstreamer, etc.)
+
+The ICY-Text to DLS script requires python.
+
+Folder structure
+----------------
+
+The root folder contains the scripts described below.
+
+The site/ folder contains the site configuration.
+The site/dls folder contains the files needed for communication between
+the scripts for the insertion of DLS, and the site/slide contains slides
+to be transmitted.
+
+site/configuration.sh lists all the programmes to be transmitted.
+
+site/multiplex.mux contains the ODR-DabMux configuration. site/mod.ini is used
+as configuration for ODR-DabMod.
+
+site/filtertaps.txt contains the ODR-DabMod FIRFilter taps.
+
+site/mail-warning.txt is either empty, if no warning mails should be sent by the
+script, or a valid email address to send the warning to.
+
+The site/dls folder must exist, and can contain default DLS text files for the
+different programmes.
+
+The site/slide folder is optional, and must contain one folder for each programme,
+named after its ID, into which you can place slides to be transmitted.
+
+How to get started
+------------------
+
+The examplesite/ folder should be taken as a template to create a new site, it
+contains all needed files.
+
+ * Create a copy of it, and call it *site*.
+ * Modify and adapt all configuration files presented above.
+ * Start a GNU Screen session.
+ * Launch JACK (see below)
+ * Start ODR-DabMux and ODR-DabMod using *start-mux-mod.sh*
+ * Start one encoder using *radio.sh ID* or all encoders with
+   *launch-all-encoders.sh*
+
+Scripts
+-------
+
+*start-mux-mod.sh* starts ODR-DabMux and ODR-DabMod with the configuration
+given in site/multiplex.mux and site/mod.ini
+
+*radio.sh* starts one mplayer and fdk-aac-dabplus encoder for the radio
+programme whose identification is set in site/configuration.sh. This script
+will automatically restart the encoder if there is a failure.
+
+The *encode-XYZ.sh* scripts contain all the logic for failure resilience,
+and use different players to read the stream.
+
+*encode-jack.sh* is the best supported script of all these. It extracts
+ICY-Text and launches the mot-encoder to insert DLS and optionally slides.
+ It needs a running JACK daemon to work, which should be started with
+
+   jackd -d dummy -r 32000
+
+*launch-all-encoders.sh* and *kill-all-encoders.sh* can start and stop all
+configured encoders, and are meant to be used inside a GNU Screen session. For
+each encoder, a new GNU Screen window is created.
+
+*icy-info.py* is a helper script that converts the webstream ICY Text into DLS
+for the mot-encoder. Do not run it directly, it is used by *encode-jack.sh*.
+
+
+Additional remarks
+------------------
+
+For a rate of 48kHz, the RATE parameters in the *encode-XYZ.sh* script must be
+changed.
+
diff --git a/encode-gst.sh b/encode-gst.sh
new file mode 100755
index 0000000..255b4be
--- /dev/null
+++ b/encode-gst.sh
@@ -0,0 +1,48 @@
+#!/bin/bash
+#
+# Encode one programme using gstreamer.
+#
+# Status: Experimental
+
+URL=$1
+ID=$2
+DST=$3
+
+QUEUEDELAY=400000 #400ms
+
+BITRATE=80
+RATE=32000
+
+if [[ "$DST" == "" ]]
+then
+    echo "Usage $0 url id destination"
+    exit 1
+fi
+
+while true
+do
+
+    gst-launch -q \
+            uridecodebin uri=$URL ! \
+            queue "max-size-time=$QUEUEDELAY" ! \
+            audioresample quality=8 ! \
+            audioconvert ! \
+            audio/x-raw-int, "rate=$RATE,format=S16LE,channels=2" ! \
+            filesink location="/dev/stdout" | \
+        dabplus-enc -i /dev/stdin -b $BITRATE -r $RATE -f raw -a -o $DST
+
+    R=$?
+
+    NOW=$(date)
+
+    mail -s "Encoder $ID restart $URL" matthias+odrge1@mpb.li << EOF
+The encoder id:$ID
+encoding $URL -> $DST with gstreamer was restarted at
+$NOW
+
+The return code was $R
+
+EOF
+
+    sleep 5
+done
diff --git a/encode-jack.sh b/encode-jack.sh
new file mode 100755
index 0000000..7a73589
--- /dev/null
+++ b/encode-jack.sh
@@ -0,0 +1,274 @@
+#!/bin/bash
+#
+# Encode programme using mplayer, connect through JACK
+# to dabplus-enc
+#
+# Read webstream from URL using mplayer
+# Launch dabplus-enc encoder
+# connect both through JACK
+# monitor processes, and restart if necessary
+# Optionally send an email when restart happens
+#
+# Extract ICY Text from stream and use it for DLS
+
+printerr() {
+    echo -e "\033[01;31m$1\033[0m"
+}
+
+printmsg() {
+    echo -e "\033[01;32m$1\033[0m"
+}
+
+set -u
+
+# check number of arguments
+if [[ "$#" < 3 ]] ; then
+    echo "Usage $0 url jack-id destination [volume]"
+    echo "The volume setting is optional"
+    exit 1
+fi
+
+if [[ "$#" > 2 ]] ; then
+    URL=$1
+    ID=$2
+    DST=$3
+fi
+
+if [[ "$#" == 4 ]] ; then
+    VOL=$4
+else
+    VOL=""
+fi
+
+BITRATE=80
+RATE=32000
+
+DLSDIR=site/dls
+SLIDEDIR=site/slide
+
+encoderalive=0
+mplayerpid=0
+encoderpid=0
+motencoderpid=0
+running=1
+
+mplayer_ok=0
+encoder_ok=0
+
+# The trap for Ctrl-C
+sigint_trap() {
+    printerr "Got Ctrl-C, killing mplayer and encoder"
+    running=0
+
+    if [[ "$mplayerpid" != "0" ]] ; then
+        kill -TERM $mplayerpid
+        sleep 2
+        kill -KILL $mplayerpid
+    fi
+
+    if [[ "$encoderpid" != "0" ]] ; then
+        kill -TERM $encoderpid
+        sleep 2
+        kill -KILL $encoderpid
+    fi
+
+    if [[ "$motencoderpid" != "0" ]] ; then
+        kill -TERM $motencoderpid
+        sleep 2
+        kill -KILL $motencoderpid
+    fi
+
+    printmsg "Goodbye"
+    exit
+}
+
+trap sigint_trap SIGTERM
+trap sigint_trap SIGINT
+
+while [[ "$running" == "1" ]]
+do
+    if [[ "$mplayerpid" == "0" ]] ; then
+        if [[ "$VOL" == "" ]] ; then
+            mplayer -quiet -af resample=$RATE:0:2 -ao jack:name=$ID $URL | \
+                ./icy-info.py $DLSDIR/${ID}.dls $DLSDIR/${ID}-default.dls &
+            mplayerpid=$!
+        else
+            mplayer -quiet -af resample=$RATE:0:2 -af volume=$VOL -ao jack:name=$ID $URL | \
+                ./icy-info.py $DLSDIR/${ID}.dls $DLSDIR/${ID}-default.dls &
+            mplayerpid=$!
+        fi
+
+        printmsg "Started mplayer with pid $mplayerpid"
+
+        # give some time to mplayer to set up and
+        # wait until port becomes visible
+        timeout=10
+
+        while [[ "$mplayer_ok" == "0" ]]
+        do
+            printmsg "Waiting for mplayer to connect to jack ($timeout)"
+            sleep 1
+            mplayer_ok=$(jack_lsp $ID:out_0 | wc -l)
+
+            timeout=$(( $timeout - 1 ))
+
+            if [[ "$timeout" == "0" ]] ; then
+                printerr "mplayer doesn't connect to jack !"
+                kill $mplayerpid
+                break
+            fi
+        done
+    else
+        printmsg "No need to start mplayer: $mplayerpid"
+    fi
+
+    if [[ "$mplayer_ok" == "1" && "$encoder_ok" == "0" ]] ; then
+        dabplus-enc -j ${ID}enc -l \
+            -p 34 -P $DLSDIR/${ID}.pad \
+            -b $BITRATE -r $RATE -f raw -a -o $DST &
+        encoderpid=$!
+
+        # give some time to the encoder to set up and
+        # wait until port becomes visible
+        timeout=10
+
+        encoder_connected=0
+
+        while [[ "$encoder_connected" == "0" ]]
+        do
+            printmsg "Waiting for encoder to connect to jack ($timeout)"
+            sleep 1
+            encoder_connected=$(jack_lsp ${ID}enc:input0 | wc -l)
+
+            timeout=$(( $timeout - 1))
+
+            if [[ "$timeout" == "0" ]] ; then
+                printerr "encoder doesn't connect to jack !"
+                kill $encoderpid
+                break
+            fi
+        done
+
+        if [[ "$encoder_connected" == "1" ]] ; then
+            jack_connect ${ID}:out_0 ${ID}enc:input0 && \
+            jack_connect ${ID}:out_1 ${ID}enc:input1
+            connect_ret=$?
+
+            if [[ "$connect_ret" == "0" ]] ; then
+                encoder_ok=1
+            else
+                encoder_ok=0
+            fi
+
+            if [[ "$encoder_ok" == "1" ]] ; then
+                printmsg "Started encoder with pid $encoderpid"
+            else
+                if [[ "$encoderpid" != "0" ]] ; then
+                    kill -TERM $encoderpid
+                fi
+            fi
+        fi
+    fi
+
+    if [[ "$encoder_ok" == "1" && "$motencoderpid" == "0" ]] ; then
+        # Check if the slides folder exists, and start mot-encoder accordingly
+        if [[ -d "$SLIDEDIR/$ID" ]] ; then
+            mot-encoder -o $DLSDIR/${ID}.pad -t $DLSDIR/${ID}.dls -p 34 -v \
+                -e -d $SLIDEDIR/${ID} &
+            motencoderpid=$!
+        else
+            mot-encoder -o $DLSDIR/${ID}.pad -t $DLSDIR/${ID}.dls -p 34 -v &
+            motencoderpid=$!
+        fi
+
+        printmsg "Started mot-encoder with pid $encoderpid"
+    fi
+
+
+    sleep 5
+
+    checkloop=1
+    while [[ "$checkloop" == "1" ]]
+    do
+        sleep 2
+
+        kill -s 0 $mplayerpid
+        if [[ "$?" != "0" ]] ; then
+            # mplayer died
+            # we must kill jack-stdout, because we cannot reconnect it
+            # to a new mplayer, since we do not know the jack-stdout name.
+            # And it has no cmdline option to set one, Rrrrongntudtjuuu!
+            if [[ "$encoderpid" != "0" ]] ; then
+                kill -TERM $encoderpid
+            fi
+
+            if [[ "$motencoderpid" != "0" ]] ; then
+                kill -TERM $motencoderpid
+            fi
+
+            # mark as dead
+            mplayerpid=0
+            mplayer_ok=0
+            encoderpid=0
+            encoder_ok=0
+            motencoderpid=0
+
+            checkloop=0
+
+            printerr "Mplayer died"
+        fi
+
+        if [[ "$encoderpid" != "0" ]] ; then
+            kill -s 0 $encoderpid
+            if [[ "$?" != "0" ]] ; then
+                # the encoder died,
+                # no need to kill the mplayer, we can reconnect to it
+
+                if [[ "$motencoderpid" != "0" ]] ; then
+                    kill -TERM $motencoderpid
+                fi
+
+                motencoderpid=0
+                encoderpid=0
+                encoder_ok=0
+
+                checkloop=0
+
+                printerr "Encoder died"
+            fi
+        fi
+
+        if [[ "$motencoderpid" != "0" ]] ; then
+            kill -s 0 $motencoderpid
+            if [[ "$?" != "0" ]] ; then
+                # mot-encoder died
+                # let's try restarting it
+
+                motencoderpid=0
+
+                checkloop=0
+
+                printerr "mot-encoder died"
+            fi
+        fi
+    done
+
+    MAILTO=$(cat site/mail-warning.txt)
+
+    if [[ "$MAILTO" != "" ]] ; then
+        NOW=$(date)
+
+        mail -s "Encoder $ID restart $URL" $MAILTO << EOF
+The encoder id:$ID
+encoding $URL -> $DST using mplayer and jack was restarted at
+$NOW
+
+mplayer ok? $mplayer_ok
+
+EOF
+
+    fi
+    sleep 5
+
+done
+
diff --git a/encode-mpg123.sh b/encode-mpg123.sh
new file mode 100755
index 0000000..17c4d7f
--- /dev/null
+++ b/encode-mpg123.sh
@@ -0,0 +1,45 @@
+#!/bin/bash
+#
+# Encode programme using mpg123
+#
+# Status: Experimental
+
+URL=$1
+ID=$2
+DST=$4
+
+BITRATE=80
+RATE=32000
+
+if [[ "$DST" == "" ]]
+then
+    echo "Usage $0 url id destination"
+    exit 1
+fi
+
+while true
+do
+
+    mpg123 -r $RATE -s $URL | \
+        dabplus-enc -i /dev/stdin -b $BITRATE -r $RATE -f raw -a -o $DST
+
+    R=$?
+
+    MAILTO=$(cat site/mail-warning.txt)
+
+    if [[ "$MAILTO" != "" ]] ; then
+        NOW=$(date)
+
+        mail -s "Encoder $ID restart $URL" $MAILTO << EOF
+The encoder id:$ID
+encoding $URL -> $DST with mpg123 was restarted at
+$NOW
+
+The return code was $R
+
+EOF
+    fi
+
+    sleep 5
+done
+
diff --git a/examplesite/configuration.sh b/examplesite/configuration.sh
new file mode 100644
index 0000000..9ca0942
--- /dev/null
+++ b/examplesite/configuration.sh
@@ -0,0 +1,14 @@
+# Configuration file for the encoder scripts
+
+all_radios=(
+    "radio1"
+    "radio2" )
+
+# for each radio, write here the full encoder command.
+# encode-jack needs:
+#  URL ID dabmux-URL [amplitude correction]
+radios[radio1]="./encode-jack.sh http://radio1streamurl.example.com radio1 tcp://localhost:9000"
+
+# Attenuate radio2 by 3dB
+radios[radio2]="./encode-jack.sh http://radio2streamurl.example.com radio2 tcp://localhost:9001 -3"
+
diff --git a/examplesite/dls/radio1-default.dls b/examplesite/dls/radio1-default.dls
new file mode 100644
index 0000000..b79382b
--- /dev/null
+++ b/examplesite/dls/radio1-default.dls
@@ -0,0 +1 @@
+Radio1 - The Best Example DLS Text Ever
diff --git a/examplesite/filtertaps.txt b/examplesite/filtertaps.txt
new file mode 100644
index 0000000..cd0b28d
--- /dev/null
+++ b/examplesite/filtertaps.txt
@@ -0,0 +1,46 @@
+45
+-0.00110450468492
+0.00120703084394
+-0.000840645749122
+-0.000187368263141
+0.00184351124335
+-0.00355578539893
+0.00419321097434
+-0.00254214904271
+-0.00183473504148
+0.00781436730176
+-0.0125957569107
+0.0126200336963
+-0.00537294941023
+-0.00866683479398
+0.0249746385962
+-0.0356550291181
+0.0319730602205
+-0.00795613788068
+-0.0363943465054
+0.0938014090061
+-0.151176810265
+0.193567320704
+0.791776955128
+0.193567320704
+-0.151176810265
+0.0938014090061
+-0.0363943465054
+-0.00795613788068
+0.0319730602205
+-0.0356550291181
+0.0249746385962
+-0.00866683479398
+-0.00537294941023
+0.0126200336963
+-0.0125957569107
+0.00781436730176
+-0.00183473504148
+-0.00254214904271
+0.00419321097434
+-0.00355578539893
+0.00184351124335
+-0.000187368263141
+-0.000840645749122
+0.00120703084394
+-0.00110450468492
diff --git a/examplesite/mail-warning.txt b/examplesite/mail-warning.txt
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/examplesite/mail-warning.txt
diff --git a/examplesite/mod.ini b/examplesite/mod.ini
new file mode 100644
index 0000000..c3d2d37
--- /dev/null
+++ b/examplesite/mod.ini
@@ -0,0 +1,46 @@
+[remotecontrol]
+telnet=1
+telnetport=2121
+
+[log]
+syslog=1
+filelog=1
+filename=/dev/stderr
+
+[input]
+transport=file
+source=/dev/stdin
+loop=0
+
+[modulator]
+gainmode=2
+mode=1
+dac_clk_rate=0
+digital_gain=0.5
+rate=2048000
+
+[firfilter]
+enabled=0
+filtertapsfile=site/filtertaps.txt
+
+[output]
+output=uhd
+
+[fileoutput]
+filename=/dev/null
+
+[uhdoutput]
+device=
+type=b200
+master_clock_rate=32768000
+channel=10D
+txgain=40
+refclk_source=internal
+pps_source=none
+behaviour_refclk_lock_lost=crash
+
+[delaymanagement]
+synchronous=0
+management=dynamic
+fixedoffset=0.000
+dynamicoffsetfile=site/modulatoroffset
diff --git a/examplesite/multiplex.mux b/examplesite/multiplex.mux
new file mode 100644
index 0000000..3fcda00
--- /dev/null
+++ b/examplesite/multiplex.mux
@@ -0,0 +1,76 @@
+; Example configuration file for site.
+; Please see ODR-DabMux repository for more details
+;
+general {
+    dabmode 1
+    nbframes 0
+    syslog 1
+    writescca false
+    tist false
+    statsserverport 12720
+}
+
+remotecontrol {
+    telnetport 12721
+}
+
+ensemble {
+    id 0xabcd
+    ecc 0x01
+    label "ODR-mmbTools"
+    shortlabel "mmbTools"
+    international-table 1
+    local-time-offset auto
+}
+
+services {
+    srv_radio1 {
+        label "GLOBAL FM+"
+        id 0x6543
+    }
+    srv_radio2 {
+        label "radio2"
+        id 0x6542
+    }
+}
+
+subchannels {
+    sub_radio1 {
+        type dabplus
+        inputfile "tcp://*:9000"
+        zmq-buffer 80
+        zmq-prebuffering 40
+        bitrate 80
+        id 1
+        protection 3
+    }
+    sub_radio2 {
+        type dabplus
+        inputfile "tcp://*:9001"
+        zmq-buffer 80
+        zmq-prebuffering 40
+        bitrate 80
+        id 2
+        protection 3
+    }
+}
+
+components {
+    comp_radio1 {
+        label "radio1"
+        shortlabel "radio1"
+        service srv_radio1
+        subchannel sub_radio1
+    }
+    comp_radio2 {
+        label "radio2"
+        shortlabel "radio2"
+        service srv_radio2
+        subchannel sub_radio2
+    }
+}
+
+outputs {
+    stdout "fifo:///dev/stdout?type=raw"
+}
+
diff --git a/icy-info.py b/icy-info.py
new file mode 100755
index 0000000..14ed558
--- /dev/null
+++ b/icy-info.py
@@ -0,0 +1,93 @@
+#!/usr/bin/python2
+#
+# This script parses the mplayer standard output and
+# extracts ICY info for the mot-encoder.
+#
+# Usage:
+# mplayer <blablabla> | icy-info.py file.dls file-with-default.dls
+#
+# the file-with-default.dls contains DLS text to be sent when there
+# is no ICY info
+
+import re
+import select
+import sys
+import time
+
+re_icy = re.compile(r"""ICY Info: StreamTitle='([^']*)'.*""")
+
+if len(sys.argv) < 3:
+    print("Please specify dls output file, and file containing default text")
+    sys.exit(1)
+
+dls_file = sys.argv[1]
+
+default_textfile = sys.argv[2]
+
+def new_dlstext(text):
+    if text.strip() == "":
+        try:
+            fd = open(default_textfile, "r")
+            text = fd.read().strip()
+            fd.close()
+        except Exception as e:
+            print("Could not read default text from {}: {}".format(default_textfile, e))
+
+    print("New Text: {}".format(text))
+
+    fd = open(dls_file, "w")
+    fd.write(text)
+    fd.close()
+
+wait_timeout = 5
+nodls_timeout = 0
+
+
+while True:
+    # readline is blocking, therefore we cannot send a default text
+    # after some timeout
+    new_data = sys.stdin.readline()
+    if not new_data:
+        break
+
+    match = re_icy.match(new_data)
+
+    if match:
+        artist_title = match.groups()[0]
+        new_dlstext(artist_title)
+    else:
+        print("{}".format(new_data.strip()))
+
+if False:
+    # The select call creates a one ICY delay, and it's not clear why...
+    while True:
+        rfds, wfds, efds = select.select( [sys.stdin], [], [], wait_timeout)
+
+        if rfds:
+            # new data available on stdin
+            print("SELECT !")
+            new_data = sys.stdin.readline()
+            print("DATA ! {}".format(new_data))
+
+            if not new_data:
+                break
+
+            match = re_icy.match(new_data)
+
+            if match:
+                artist_title = match.groups()[0]
+                new_dlstext(artist_title)
+            else:
+                print("{}".format(new_data.strip()))
+
+        else:
+            # timeout reading stdin
+            nodls_timeout += 1
+
+            if nodls_timeout == 100:
+                new_dlstext("")
+                nodls_timeout = 0
+
+        time.sleep(.1)
+
+
diff --git a/kill-all-encoders.sh b/kill-all-encoders.sh
new file mode 100755
index 0000000..0ced123
--- /dev/null
+++ b/kill-all-encoders.sh
@@ -0,0 +1,6 @@
+#!/bin/bash
+
+# kill all processes that contain _encode-
+
+pkill  _encode-
+
diff --git a/launch-all-encoders.sh b/launch-all-encoders.sh
new file mode 100755
index 0000000..1f7e56d
--- /dev/null
+++ b/launch-all-encoders.sh
@@ -0,0 +1,19 @@
+#!/bin/bash
+# launch each encoder in its own screen window
+
+if [ -f site/configuration.sh ]
+then
+
+    source site/configuration.sh
+
+    for radio in ${all_radios[*]}
+    do
+        screen -t $radio ./radio $radio
+        sleep 0.4
+    done
+
+else
+    echo "Error: No site configuration available!"
+    exit 1
+fi
+
diff --git a/radio.sh b/radio.sh
new file mode 100755
index 0000000..d475ce4
--- /dev/null
+++ b/radio.sh
@@ -0,0 +1,52 @@
+#!/bin/bash
+#
+# Start the encoder for the radio
+
+# Declare radios to be an associative array
+declare -A radios
+
+source site/configuration.sh
+
+printerr() {
+    echo -e "\033[01;31m$1\033[0m"
+}
+
+printmsg() {
+    echo -e "\033[01;32m$1\033[0m"
+}
+
+script_pid=0
+sigint_trap() {
+    printerr "Got Ctrl-C, killing radio encoder script"
+    if [[ "$script_pid" != "0" ]] ; then
+        kill $script_pid
+        script_pid=0
+        wait
+    fi
+}
+
+set -e
+
+# check number of arguments
+if [[ "$#" < 1 ]] ; then
+    echo "Usage $0 radio-id"
+    echo "You must specify which radio to start"
+    exit 1
+fi
+
+RADIO=$1
+
+if [ ${radios[$RADIO]+_} ] ; then
+    COMMAND=${radios[$RADIO]}
+
+    trap sigint_trap SIGINT
+
+    # execute script
+    $COMMAND &
+    script_pid=$!
+    wait
+else
+    echo "Radio $RADIO not defined in configuration"
+    exit 1
+fi
+
diff --git a/start-mux-mod.sh b/start-mux-mod.sh
new file mode 100755
index 0000000..c7f2489
--- /dev/null
+++ b/start-mux-mod.sh
@@ -0,0 +1,34 @@
+#!/bin/bash
+#
+# Launch the multiplexer and the modulator
+
+if [[ -e site/multiplex.mux && -e site/mod.ini && site/mail-warning.txt ]]
+then
+
+    while true
+    do
+        odr-dabmux -e site/multiplex.mux | sudo odr-dabmod -C site/mod.ini
+        R=$?
+
+        MAILTO=$(cat site/mail-warning.txt)
+
+        if [[ "$MAILTO" != "" ]] ; then
+            NOW=$(date)
+            mail -s "MUX and MOD restart" $MAILTO << EOF
+The mux and mod were restarted at
+$NOW
+
+The return code was $R
+
+EOF
+
+        fi
+
+        sleep 15
+    done
+else
+    echo "Incomplete site configuration !"
+    echo "Check that the site/ folder exists"
+    exit 1
+fi
+