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.. _using-main:
******************************
Using Reticulum on Your System
******************************
Reticulum is not installed as a driver or kernel module, as one might expect
of a networking stack. Instead, Reticulum is distributed as a Python module.
This means that no special privileges are required to install or use it. It
is also very light-weight, and easy to transfer to and install on new systems.
Any program or application that uses Reticulum will automatically load and
initialise Reticulum when it starts.
In many cases, this approach is sufficient. When any program needs to use
Reticulum, it is loaded, initialised, interfaces are brought up, and the
program can now communicate over any Reticulum networks available. If another
program starts up and also wants access to the same Reticulum network, the
instance is simply shared. This works for any number of programs running
concurrently, and is very easy to use, but depending on your use case, there
are other options.
Included Utility Programs
-------------------------
If you often use Reticulum from several different programs, or simply want
Reticulum to stay available all the time, for example if you are hosting
a transport node, you might want to run Reticulum as a separate service that
other programs, applications and services can utilise.
The rnsd Utility
================
To do so is very easy. Simply run the included ``rnsd`` command. When ``rnsd``
is running, it will keep all configured interfaces open, handle transport if
it is enabled, and allow any other programs to immediately utilise the
Reticulum network it is configured for.
You can even run multiple instances of rnsd with different configurations on
the same system.
.. code:: text
# Install Reticulum
pip3 install rns
# Run rnsd
rnsd
.. code:: text
usage: rnsd [-h] [--config CONFIG] [-v] [-q] [--version]
Reticulum Network Stack Daemon
optional arguments:
-h, --help show this help message and exit
--config CONFIG path to alternative Reticulum config directory
-v, --verbose
-q, --quiet
--version show program's version number and exit
You can easily add ``rnsd`` as an always-on service by :ref:`configuring a service<using-systemd>`.
The rnstatus Utility
====================
Using the ``rnstatus`` utility, you can view the status of configured Reticulum
interfaces, similar to the ``ifconfig`` program.
.. code:: text
# Run rnstatus
rnstatus
# Example output
Shared Instance[37428]
Status : Up
Serving : 1 program
Rate : 1.00 Gbps
Traffic : 83.13 KB↑
86.10 KB↓
AutoInterface[Local]
Status : Up
Mode : Full
Rate : 10.00 Mbps
Peers : 1 reachable
Traffic : 63.23 KB↑
80.17 KB↓
TCPInterface[RNS Testnet Frankfurt/frankfurt.rns.unsigned.io:4965]
Status : Up
Mode : Full
Rate : 10.00 Mbps
Traffic : 187.27 KB↑
74.17 KB↓
RNodeInterface[RNode UHF]
Status : Up
Mode : Access Point
Rate : 1.30 kbps
Access : 64-bit IFAC by <…e702c42ba8>
Traffic : 8.49 KB↑
9.23 KB↓
Reticulum Transport Instance <5245a8efe1788c6a70e1> running
.. code:: text
usage: rnstatus [-h] [--config CONFIG] [--version] [-a] [-v]
Reticulum Network Stack Status
optional arguments:
-h, --help show this help message and exit
--config CONFIG path to alternative Reticulum config directory
--version show program's version number and exit
-a, --all show all interfaces
-v, --verbose
The rnpath Utility
====================
With the ``rnpath`` utility, you can look up and view paths for
destinations on the Reticulum network.
.. code:: text
# Run rnpath
rnpath eca6f4e4dc26ae329e61
# Example output
Path found, destination <eca6f4e4dc26ae329e61> is 4 hops away via <56b115c30cd386cad69c> on TCPInterface[Testnet/frankfurt.rns.unsigned.io:4965]
.. code:: text
usage: rnpath [-h] [--config CONFIG] [--version] [-t] [-d] [-w seconds] [-v]
[destination]
Reticulum Path Discovery Utility
positional arguments:
destination hexadecimal hash of the destination
optional arguments:
-h, --help show this help message and exit
--config CONFIG path to alternative Reticulum config directory
--version show program's version number and exit
-t, --table show all known paths
-d, --drop remove the path to a destination
-w seconds timeout before giving up
-v, --verbose
The rnprobe Utility
====================
The ``rnprobe`` utility lets you probe a destination for connectivity, similar
to the ``ping`` program. Please note that probes will only be answered if the
specified destination is configured to send proofs for received packets. Many
destinations will not have this option enabled, and will not be probable.
.. code:: text
# Run rnprobe
python3 -m RNS.Utilities.rnprobe example_utilities.echo.request 9382f334de63217a4278
# Example output
Sent 16 byte probe to <9382f334de63217a4278>
Valid reply received from <9382f334de63217a4278>
Round-trip time is 38.469 milliseconds over 2 hops
.. code:: text
usage: rnprobe.py [-h] [--config CONFIG] [--version] [-v] [full_name] [destination_hash]
Reticulum Probe Utility
positional arguments:
full_name full destination name in dotted notation
destination_hash hexadecimal hash of the destination
optional arguments:
-h, --help show this help message and exit
--config CONFIG path to alternative Reticulum config directory
--version show program's version number and exit
-v, --verbose
Improving System Configuration
------------------------------
If you are setting up a system for permanent use with Reticulum, there is a
few system configuration changes that can make this easier to administrate.
These changes will be detailed here.
Fixed Serial Port Names
=======================
On a Reticulum instance with several serial port based interfaces, it can be
beneficial to use the fixed device names for the serial ports, instead
of the dynamically allocated shorthands such as ``/dev/ttyUSB0``. Under most
Debian-based distributions, including Ubuntu and Raspberry Pi OS, these nodes
can be found under ``/dev/serial/by-id``.
You can use such a device path directly in place of the numbered shorthands.
Here is an example of a packet radio TNC configured as such:
.. code:: text
[[Packet Radio KISS Interface]]
type = KISSInterface
interface_enabled = True
outgoing = true
port = /dev/serial/by-id/usb-FTDI_FT230X_Basic_UART_43891CKM-if00-port0
speed = 115200
databits = 8
parity = none
stopbits = 1
preamble = 150
txtail = 10
persistence = 200
slottime = 20
Using this methodology avoids potential naming mix-ups where physical devices
might be plugged and unplugged in different orders, or when device name
assignment varies from one boot to another.
.. _using-systemd:
Reticulum as a System Service
=============================
Instead of starting Reticulum manually, you can install ``rnsd`` as a system
service and have it start automatically at boot.
If you installed Reticulum with ``pip``, the ``rnsd`` program will most likely
be located in a user-local installation path only, which means ``systemd`` will not
be able to execute it. In this case, you can simply symlink the ``rnsd`` program
into a directory that is in systemd's path:
.. code:: text
sudo ln -s $(which rnsd) /usr/local/bin/
You can then create the service file ``/etc/systemd/system/rnsd.service`` with the
following content:
.. code:: text
[Unit]
Description=Reticulum Network Stack Daemon
After=multi-user.target
[Service]
# If you run Reticulum on WiFi devices,
# or other devices that need some extra
# time to initialise, you might want to
# add a short delay before Reticulum is
# started by systemd:
# ExecStartPre=/bin/sleep 10
Type=simple
Restart=always
RestartSec=3
User=USERNAMEHERE
ExecStart=rnsd --service
[Install]
WantedBy=multi-user.target
Be sure to replace ``USERNAMEHERE`` with the user you want to run ``rnsd`` as.
To manually start ``rnsd`` run:
.. code:: text
sudo systemctl start rnsd
If you want to automatically start ``rnsd`` at boot, run:
.. code:: text
sudo systemctl enable rnsd
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