client

imUp client

imUp

This application is the client binary distributed for use with imUp.io's connectivity and speed testing platform

It continuously checks for connectivity and periodically runs speed tests in accordance with the ndt7-protocol

The client is also enabled with imUp real-time features including on-demand speed tests, liveness check-ins as well as remote configuration

Features

• Connection Health: Collects latency, RTT, and packet loss. If you're experiencing connectivity issues while working from home or gaming, this data will help you pinpoint if the issue is on your end or not.

• Speed Tests: Using the ndt7 protocol collects speed tests data at semi random intervals or on-demand.

• Real-time Monitoring: With imUp.io you have access to on-demand speed tests as well as real-time altering via email or twitter.

Basic Usage

Download the client

go install github.com/imup-io/client@latest

Run the client specifying an email address you want to associate the data with

client --email email@example.com

Contributing

See the contribution guide for details on how to contribute.

Behavior

Allowlists and Blocklists

If either allowlisted IPs or blocklisted IPs are configured (CIDR notation), imUp will ask ipify.org for the public IP address is of the host it's running on every 60 seconds and pause execution of monitoring if the IP fails to meet the configured criteria.

The CIDR notation for a single IP address to be added to either list is <ip-address>/32. As an example, Cloudflare's DNS server in CIDR notation is 1.1.1.1/32. If an IP address is passed in without CIDR notation, a warning log will print and the address will be assumed to be /32.

A use case for individuals is to only monitor their internet while at home (allowlist) and stop monitoring if they take their computer to a coffee shop.

A use case for businesses is to only monitor their employees' internet while not in the office (blocklist), which might be appropriate for a remote worker who sometimes brings their computer to the office.

Pseudo Random Speed Testing

Unless the --no-speed-test flag is set, a speed test will be run approximately every four hours. The frequency of the of the test is constrained in part by the ndt7 protocol as well as the imUps teams desire not to excessively run tests, or potentially saturate a network where multiple clients could be running. A poisson distribution is being used to guarantee a consistent number of speed tests every day.

Logs

Logs are generally sent to stdout and stderr, but imUp can be configured to write to a log file instead.

To enable logging to a file, set the LOG_TO_FILE environment variable to "true", and be sure to set up imUp's environment to make it's log file path a writeable location.

The following table describes where logs will (by default) be written to:

To change the default log file path, set the LOG_FILE_PATH environment variable to an alternative writeable location. Note that setting this environment variable overrides LOG_TO_FILE

To configure log verbosity, set the VERBOSITY environment variable to one of the following common log levels:

• debug
• info (default value)
• warn
• error

Environment Configuration

Flags

Usage: imup
  -allowlisted-ips string
    	comma separated list of CIDR strings to match against host IP that determines whether speed and connectivity testing will be run, default is allow all
  -anonymize.ip value
    	Valid values are "none" and "netblock". (default none)
  -api-post-connection-data string
    	api endpoint for connectivity data ingestion, default is https://api.imup.io/v1/data/connectivity
  -api-post-speed-test-data string
    	api endpoint for speed data ingestion, default is https://api.imup.io/v1/data/speedtest
  -blocklisted-ips string
    	comma separated list of CIDR strings to match against host IP that determines whether speed and connectivity testing will be paused, default is block none
  -conn-delay string
    	the delay between connectivity tests with a net dialer (milliseconds), default is 200
  -conn-interval string
    	how often a dial test is run (seconds), default is 60
  -conn-requests string
    	the number of dials executed during a connectivity test, default is 300
  -email string
    	email address associated with the gathered connectivity and speed data
  -group-id string
    	an imup org users group id
  -host-id string
    	the host id associated with the gathered connectivity and speed data
  -imup-data-length string
    	the number of data points collected before sending data to the api, default is 15 data points
  -insecure
    	run insecure speed tests (ws:// and not wss://), default is false
  -key string
    	an api key associated with an imup organization
  -liveness-check-in-address string
    	api endpoint for liveness checkins default is https://api.imup.io/v1/realtime/livenesscheckin
  -locate.url value
    	The base url for the Locate API (default https://locate.measurementlab.net/v2/nearest/)
  -log-file string
     writes a log file this file, default is unset
  -log-to-file
    	if enabled, will log to the default root directory to use for user-specified cached data, default is false
  -no-gateway-discovery
    	do not attempt to discover a default gateway, default is true
  -no-speed-test
    	do not run speed tests, default is false
  -nonvolatile
    	use disk to store collected data between tests to ensure no lost data, default is false to be minimally invasive
  -ping
    	use ICMP ping for connectivity tests, default is true (default true)
  -ping-address-internal string
    	an internal gateway to differentiate between local networking issues and internet connectivity, by default imup attempts to discover your gateway
  -ping-addresses-external string
    	external IP addresses imup will use to validate connectivity, defaults are 1.1.1.1,1.0.0.1,8.8.8.8,8.8.4.4
  -ping-delay string
    	the delay between connectivity tests with ping (milliseconds), default is 100
  -ping-interval string
    	how often a ping test is run (seconds), default is 60
  -ping-requests string
    	the number of icmp echos executed during a ping test, default is 600
  -realtime
    	enable realtime features, default is true (default true)
  -realtime-authorized string
    	api endpoint for imup real-time features, default is https://api.imup.io/v1/auth/realtimeAuthorized
  -realtime-config string
    	api endpoint for imup realtime reloadable configuration, default is https://api.imup.io/v1/realtime/config
  -should-run-speed-test-address string
    	api endpoint for imup realtime speed tests, default is https://api.imup.io/v1/realtime/shouldClientRunSpeedTest
  -speed-test-results-address string
    	api endpoint for imup realtime speed test results, default is https://api.imup.io/v1/realtime/speedTestResults
  -speed-test-status-update-address string
    	api endpoint for imup real-time speed test status updates, default is https://api.imup.io/v1/realtime/speedTestStatusUpdate
  -verbosity string
    	verbosity for log output [debug, info, warn, error], default is info