Aggiungi override probe TCP keepalive

red/tcp/tcp-keepalive.js

@@ -0,0 +1,41 @@
+"use strict";
+
+let native = null;
+
+try {
+    native = require("../../native/tcp_keepalive/build/Release/tcp_keepalive_native");
+} catch (err) {
+    native = null;
+}
+
+function parseKeepAliveProbes(value) {
+    if (value === undefined || value === null || value === "") {
+        return 0;
+    }
+
+    value = Number(value);
+    if (!Number.isFinite(value) || value < 0) {
+        return 0;
+    }
+
+    return Math.floor(value);
+}
+
+function setKeepAliveProbes(socket, probes) {
+    if (!native || probes <= 0 || !socket || !socket._handle) {
+        return false;
+    }
+
+    const fd = socket._handle.fd;
+    if (!Number.isInteger(fd) || fd < 0) {
+        return false;
+    }
+
+    return native.setKeepAliveProbes(fd, probes) === true;
+}
+
+module.exports = {
+    available: !!native,
+    parseKeepAliveProbes,
+    setKeepAliveProbes
+};