Ground control requirements

The Remote Instrument Control (RIC) software is installed on eol-ric.ucar.edu. In order to run it, the user must have current certificates for RIC and for the instruments you are connecting to RIC. Once the RIC Proxy is installed on a user's computer, they can connect to their instrument using RIC and control the instrument remotely.

Running RIC: User Tasks

Install the RIC proxy on your (users) computer

Get a copy of the latest RIC certification from an SE/ADMIN

  • You will need a copy of the RIC certification file (eol-ric.crt) which should be placed into .ric/Certs in your home dir. (This dir is created automatically when installing on a Window's machine. Use "ls -a" to see it.)
  • In addition, you will need the .key and .crt files for your instrument (<inst>.crt, <inst>.key). An SE or ADMIN can obtain these from .ric/Certs on eol-ric.

NOTE: <inst> is the name of your instrument: GNI, AVAPS, etc

Change the file permissions on your certs to be user read only

  • From ~/.ric/Certs, run:

> chmod 0400 eol-ric.crt

> chmod 0400 <inst>.crt

> chmod 0400 <inst>.key

If you are running on a MAC, you will need to add eol-ric.crt to your keychain file

  • Finder -> Applications -> Utilities -> Keychain Access
  • On the left in the upper window, under Keychains, click System
  • On the left in the lower window, click Certificate (not "My Certificates)
  • Click the plus sign in the upper left (by the red, yellow, and green window control buttons)
  • You should get a file selector window. Select your eol-ric.crt file.
  • eol-ric.crt will show up under System with a red x. Double click it. Click trust. When using this certificate, always trust.

Configure your .ini files

  • Change the last line of .ric/Proxy.ini to point to a file with the name of your instrument

InstrumentFile=<inst>.ini

  • Rename SAMPLEINST.ini in .ric/Instruments to the filename created above

>mv SAMPLEINST.ini <inst>.ini

  • Edit the file you just moved and change InstName to the name of your instrument

InstName=<inst>

At this point, you should have:

homedir/.ric/ _(where homedir is /Users/<username> on a mac, or C:\Users\<username> on Windows)_

    Proxy.ini

    Certs/ _(with file permission set to read-only for all files in this directory)_

        eol-ric.crt

        <inst>.crt

        <inst>.key

    Instruments/

        <inst>.ini

Connect to your instrument

  • From the user computer, run launch_app. For example, for a mac, run

> /Users/<you>/RIC-7009/RICProxy-7009.app/Contents/MacOS/launch_app

  • Click connect.
    • If RIC doesn't stay connected, confirm that your certs aren't corrupted:

>openssl x509 -text -in <file>.crt

should return begin and end dates that include today, and a subject line like:

Subject: C=US, ST=CO, L=Boulder, O=NCAR, OU=GNI, CN=eol-ric.ucar.edu

where the only difference you will see is the OU will be an abbreviation of your instrument. Also check that the certs have user only read permission:

>ls -l <file>.crt

should return "-r--------"

  • Once connected, start the user's instrument client on the user's computer. The control software running from the ground, needs the following:

UDP_IP = 127.0.0.1

UDP_SEND_PORT and UDP_READ_PORT to be defined as listed here: https://wiki.ucar.edu/display/SEW/UDP-Data (internal access only). For example, for the GNI instrument:

AWAS:

UDP_SEND_PORT = 32103

UDP_READ_PORT = 32102

  • For instruments mounted on the aircraft, the instrument software needs to write to:

UDP_IP = 192.168.84.xxx (use whatever is configured in /etc/dncp/dhcpd_ac.conf)

AWAS:

UDP_SEND_PORT = 32102

UDP_READ_PORT = 32103

UDP_NIDAS_PORT = 30131

Ports are listed here: https://wiki.ucar.edu/display/SEW/UDP-Data (internal access only)

 

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