Performs the identical speed test to the speed test widget found at http://www.acanac.ca/speedtest/.

acanac_speed_test.sh

#!/bin/bash
#===============================================================================
#         FILE: acanac_speed_test.sh
#
#        USAGE: acanac_speed_test.sh (-c)
#
#  DESCRIPTION: Performs the identical speed test to the speed test widget found
#               at http://www.acanac.ca/speedtest/.
#
#      OPTIONS: -c changes the output to be 'epoch-timestamp, down, up'
# REQUIREMENTS: cURL, bc, parallel
#         BUGS: ---
#        NOTES: Make sure you are getting what you payed for. We will even use
#               _their_ speed test service. Example cron job for producing a
#               CSV for graphing is :
#               acanac_speed_test.sh -c >> /var/log/acanac_speed_test.log.csv
#
#       AUTHOR: Joseph Preiss <[email protected]>
#      COMPANY: ---
#      VERSION: 1.0
#      CREATED: 08.06.2014
#     REVISION: ---
#===============================================================================
ACANAC_SPEED_TEST_URL='http://www.acanac.ca/speedtest/speedtest/'

# Verify dependencies exist.
command -v curl >/dev/null 2>&1 || \
  { echo >&2 "Missing dependency curl. Aborting."; exit 1; }
command -v bc >/dev/null 2>&1 || \
  { echo >&2 "Missing dependency bc. Aborting."; exit 1; }
command -v parallel >/dev/null 2>&1 || \
  { echo >&2 "Missing dependency parallel. Aborting."; exit 1; }

# Check the arguments to see if the output will be a CSV row.
CSV_MODE=false
ARGV="$@"
case ${ARGV} in
    -c)
        CSV_MODE=true
        ;;
esac

#===============================================================================
# Download Speed Test
#===============================================================================

# cURL arguments for producing average download speed.
# Great article http://archive09.linux.com/feature/57715
CURL_ARGS="-s -o /dev/null -w '%{speed_download} '"

# Download two copies of the small download in parallel.
EPOCH_TIME=$(date +%s)
SMALL_DOWNLOAD_AVERAGE_SPEEDS=$(parallel --no-notice curl ${CURL_ARGS} ::: \
    "${ACANAC_SPEED_TEST_URL}random350x350.jpg?x=${EPOCH_TIME}-1" \
    "${ACANAC_SPEED_TEST_URL}random350x350.jpg?x=${EPOCH_TIME}-2")

# Take the average of the two download processes.
SPEEDS=(${SMALL_DOWNLOAD_AVERAGE_SPEEDS//\ / })
SMALL_AVERAGE=$(bc -l <<< "scale=2;(${SPEEDS[0]}+${SPEEDS[1]})")

# Download two copies of the large download in parallel.
EPOCH_TIME=$(date +%s)
LARGE_DOWNLOAD_AVERAGE_SPEEDS=$(parallel --no-notice curl ${CURL_ARGS} ::: \
    "${ACANAC_SPEED_TEST_URL}random1500x1500.jpg?x=${EPOCH_TIME}-1" \
    "${ACANAC_SPEED_TEST_URL}random1500x1500.jpg?x=${EPOCH_TIME}-2")

# Take the average of the two download processes.
SPEEDS=(${LARGE_DOWNLOAD_AVERAGE_SPEEDS//\ / })
LARGE_AVERAGE=$(bc -l <<< "scale=2;(${SPEEDS[0]}+${SPEEDS[1]})")

# Total download average.
TOTAL_DOWNLOAD_AVERAGE=$(bc -l <<< "scale=2;(${SMALL_AVERAGE}+${LARGE_AVERAGE})/2")

# Bytes->bits, bits->kilobits->megabits.
SPEED_DOWNLOAD=$(bc -l <<< "scale=2;(${TOTAL_DOWNLOAD_AVERAGE}*8/(1000*1000))")

# Display the download speed in a human readable format.
if [ "$CSV_MODE" == "false" ] ; then
    echo "${SPEED_DOWNLOAD}Mbps down"
fi

#===============================================================================
# Upload Speed Test
#===============================================================================

# Must use a temporary file to store the upload payload because of long length.
TEMP_FILE="/tmp/post_data"

# cURL arguments for producing average upload speed.
CURL_UPLOAD_ARGS="-s -w '%{speed_upload} ' -o /dev/null --data "@${TEMP_FILE}""

# Payload length extracted from the raw POST during a speed test.
UPLOAD_PAYLOAD_SIZE=201758

# Upload speeds from each pair execution.
LIST_UPLOAD_SPEEDS=""
for i in 0 1 2 3 4 5
do
    # Create a random payload and store in a temporary file.
    echo "content1:$(LC_ALL=C tr -dc 'A-Z' < /dev/urandom | head -c ${UPLOAD_PAYLOAD_SIZE})" > ${TEMP_FILE}

    # Upload two copies at the same time and record the upload speed.
    EPOCH_TIME=$(date +%s)
    SPEED_UPLOADS=$(parallel --no-notice curl ${CURL_UPLOAD_ARGS} ::: \
        "${ACANAC_SPEED_TEST_URL}upload.php?x=${EPOCH_TIME}-1" \
        "${ACANAC_SPEED_TEST_URL}upload.php?x=${EPOCH_TIME}-2")

    # Add the upload speeds together because they executed in parallel.
    SPEEDS=(${SPEED_UPLOADS//\ / })
    UPLOAD_SPEEDS=$(bc -l <<< "scale=2;(${SPEEDS[0]}+${SPEEDS[1]})")

    # Create a list of the upload speeds.
    LIST_UPLOAD_SPEEDS="${LIST_UPLOAD_SPEEDS} ${UPLOAD_SPEEDS} "
done

# Remove the temporary file.
rm ${TEMP_FILE}

# Add each upload speed together and divide by the total number for the average.
SPEED_UPLOAD=0
LIST_UPLOAD_SPEEDS_SPLIT=(${LIST_UPLOAD_SPEEDS//\ / })
for i in 0 1 2 3 4 5
do
    SPEED_UPLOAD=$(bc -l <<< "scale=2;(${SPEED_UPLOAD} + ${LIST_UPLOAD_SPEEDS_SPLIT[i]})")
done
SPEED_UPLOAD=$(bc -l <<< "scale=2;(${SPEED_UPLOAD}/6)")

# Bytes->bits, bits->kilobits->megabits.
SPEED_UPLOAD=$(bc -l <<< "scale=2;(${SPEED_UPLOAD}*8/(1000*1000))")

# Display the upload speed in a human readable format.
if [ "$CSV_MODE" == "false" ] ; then
    echo "${SPEED_UPLOAD}Mbps up"
fi

#===============================================================================
# CSV Output
#===============================================================================

# Create the CSV output.
if [ "$CSV_MODE" == "true" ] ; then
    echo "$(date +%s), ${SPEED_DOWNLOAD}, ${SPEED_UPLOAD}"
fi