feat(ping): added in 3 new funcitons to ping devices to see if they are alive before doing something

server/globalUtils/pingServer.ts

@@ -0,0 +1,65 @@
+import dns from "dns";
+import net from "net";
+
+// Usage example
+//const hostnamePort = "example.com:80"; // Replace with your hostname:port
+//checkHostnamePort(hostnamePort);
+
+// Function to resolve a hostname to an IP address
+export function resolveHostname(hostname: string) {
+    return new Promise((resolve, reject) => {
+        dns.lookup(hostname, (err, address) => {
+            if (err) {
+                reject(err);
+            } else {
+                resolve(address);
+            }
+        });
+    });
+}
+
+// Function to check if a port is open
+export function checkPort(ip: string, port: number): Promise<boolean> {
+    return new Promise((resolve, reject) => {
+        const socket = new net.Socket();
+
+        socket.setTimeout(2000); // Set a timeout for the connection attempt
+
+        socket.on("connect", () => {
+            socket.destroy(); // Close the connection
+            resolve(true); // Port is open
+        });
+
+        socket.on("timeout", () => {
+            socket.destroy(); // Close the connection
+            reject(new Error("Connection timed out")); // Port is not reachable
+        });
+
+        socket.on("error", (err: any) => {
+            reject(new Error(`Unknown error: ${err}`)); // Handle non-Error types
+        });
+
+        socket.connect(port, ip);
+    });
+}
+
+// Main function to check hostname:port
+export async function checkHostnamePort(hostnamePort: string): Promise<boolean> {
+    try {
+        // Split the input into hostname and port
+        const [hostname, port] = hostnamePort.split(":");
+        if (!hostname || !port) {
+            return false; // Invalid format
+        }
+
+        // Resolve the hostname to an IP address
+        const ip = (await resolveHostname(hostname)) as string;
+
+        // Check if the port is open
+        const portCheck = await checkPort(ip, parseInt(port, 10));
+
+        return true; // Hostname:port is reachable
+    } catch (err) {
+        return false; // Any error means the hostname:port is not reachable
+    }
+}