test: cover dgram socket close during cluster bind

test/parallel/test-dgram-cluster-close-during-bind.js

@@ -0,0 +1,40 @@
+'use strict';
+const common = require('../common');
+const assert = require('assert');
+const cluster = require('cluster');
+const dgram = require('dgram');
+
+if (common.isWindows) {
+ common.skip('dgram clustering is currently not supported on windows.');
+ return;
+}
+
+if (cluster.isMaster) {
+ cluster.fork();
+} else {
+ // When the socket attempts to bind, it requests a handle from the cluster.
+ // Close the socket before returning the handle from the cluster.
+ const socket = dgram.createSocket('udp4');
+ const _getServer = cluster._getServer;
+
+ cluster._getServer = common.mustCall(function(self, options, callback) {
+ socket.close(common.mustCall(() => {
+ _getServer.call(this, self, options, common.mustCall((err, handle) => {
+ assert.strictEqual(err, 0);
+
+ // When the socket determines that it was already closed, it will
+ // close the handle. Use handle.close() to terminate the test.
+ const close = handle.close;
+
+ handle.close = common.mustCall(function() {
+ setImmediate(() => cluster.worker.disconnect());
+ return close.call(this);
+ });
+
+ callback(err, handle);
+ }));
+ }));
+ });
+
+ socket.bind(common.mustNotCall('Socket should not bind.'));
+}