The `node-red-node-ping` package provides a specialized Node-RED node designed to perform ICMP pings against remote servers. It serves as a network health monitoring and keep-alive check utility within the Node-RED low-code development environment. The node can operate in two primary modes: 'Timed' for periodic checks at configurable intervals, and 'Triggered' for on-demand pings initiated by an input message. Upon execution, it outputs the round-trip time in milliseconds as `msg.payload`, or `false` if the host is unreachable or unresolvable. Error messages are provided in `msg.error` and the target IP in `msg.topic`. The current stable version is 0.3.3, which was last published approximately four years ago, indicating a very slow or ceased release cadence for this specific package. Its primary differentiator is its seamless integration into Node-RED flows, allowing developers to visually incorporate ping functionality without writing custom code, unlike standalone `ping` npm libraries.
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This demonstrates how to install the Node-RED ping node via npm and describes its basic usage within the Node-RED editor.
Manually connect the `network-observe` interface using `sudo snap connect node-red:network-observe` to grant necessary permissions.
Elevate permissions for the `ping` and `ping6` executables using `sudo setcap cap_net_raw=ep /bin/ping` and `sudo setcap cap_net_raw=ep /bin/ping6`.
Ensure `iputils-ping` (or equivalent package for your OS) is installed. On Debian/Ubuntu: `sudo apt-get install iputils-ping`.
Refer to the package's 'Gotchas' warnings. For Ubuntu Snap, use `sudo snap connect node-red:network-observe`. For Raspbian, use `sudo setcap cap_net_raw=ep /bin/ping` and `sudo setcap cap_net_raw=ep /bin/ping6`.
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