feat(master): add server package

1 files changed, 38 insertions, 0 deletions

diff --git a/master/server/src/networking.ts b/master/server/src/networking.ts
new file mode 100644
index 0000000..5a58fcd
--- /dev/null
+++ b/master/server/src/networking.ts
@@ -0,0 +1,38 @@
+import { filter_object } from "utility";
+
+import { NetworkInterfaceInfo, networkInterfaces } from "os";
+
+import { IPSubnetwork, IPv4 } from "ip-matching";
+import { promise as ping_promise } from "ping";
+
+const probe = ping_promise.probe;
+
+export function get_network_interfaces() {
+	const invalid_network_interfaces = [ "lo" ];
+
+	const nw_interfaces =
+		networkInterfaces() as Record<string, NetworkInterfaceInfo[] | undefined>;
+
+	return filter_object(
+		nw_interfaces,
+		(name, opt_info) => {
+			return !invalid_network_interfaces.includes(name) && opt_info !== undefined;
+		}
+	) as Record<string, NetworkInterfaceInfo[]>;
+}
+
+export async function ping_subnetwork(subnetwork: IPSubnetwork) {
+	const first_ip = subnetwork.getFirst() as IPv4;
+
+	let current_ip = first_ip.getNext();
+
+	while(current_ip !== undefined && subnetwork.matches(current_ip)) {
+		const current_ip_str = current_ip.toString();
+
+		const ping_result = await probe(current_ip_str, { timeout: 0.1 });
+
+		console.log(`${current_ip_str}${ping_result.alive ? " - Alive" : ""}`);
+
+		current_ip = current_ip.getNext();
+	}
+}