Monitor GameDig: Resolve domain to IP before request

server/monitor-types/gamedig.js

@@ -0,0 +1,56 @@
+const { MonitorType } = require("./monitor-type");
+const { UP, DOWN } = require("../../src/util");
+const Gamedig = require("gamedig");
+const dns = require("dns").promises;
+
+class GameDigMonitorType extends MonitorType {
+    name = "gamedig";
+
+    /**
+     * @inheritdoc
+     */
+    async check(monitor, heartbeat, server) {
+        heartbeat.status = DOWN;
+
+        let host = monitor.hostname;
+
+        if (monitor.gamedigResolveHostToIP) {
+            host = await this.resolveHostname(monitor.hostname);
+        }
+
+        try {
+            const state = await Gamedig.query({
+                type: monitor.game,
+                host: host,
+                port: monitor.port,
+                givenPortOnly: Boolean(monitor.gamedigGivenPortOnly),
+            });
+
+            heartbeat.msg = state.name;
+            heartbeat.status = UP;
+            heartbeat.ping = state.ping;
+        } catch (e) {
+            throw new Error(e.message);
+        }
+    }
+
+    /**
+     * Resolves a domain name to its IPv4 address.
+     * 
+     * @param {string} hostname - The domain name to resolve (e.g., "example.dyndns.org").
+     * @returns {Promise<string>} - The resolved IP address.
+     * @throws Will throw an error if the DNS resolution fails.
+     */
+    async resolveHostname(hostname) {
+        try {
+            const result = await dns.lookup(hostname);
+            return result.address;
+        } catch (err) {
+            throw new Error(`DNS resolution failed for ${hostname}: ${err.message}`);
+        }
+    }
+}
+
+module.exports = {
+    GameDigMonitorType,
+};