Add a test for the TLS reinitialization duplicate-listeners bug

test/parallel/test-tls-reinitialize-listeners.js

@@ -0,0 +1,42 @@
+// Flags: --expose-internals
+'use strict';
+
+const common = require('../common');
+
+if (!common.hasCrypto) {
+  common.skip('missing crypto');
+}
+
+const events = require('events');
+const fixtures = require('../common/fixtures');
+const tls = require('tls');
+const { kReinitializeHandle } = require('internal/net');
+
+// Test that repeated calls to kReinitializeHandle() do not result in repeatedly
+// adding new listeners on the socket (i.e. no MaxListenersExceededWarnings)
+
+process.on('warning', common.mustNotCall());
+
+const server = tls.createServer({
+  key: fixtures.readKey('agent1-key.pem'),
+  cert: fixtures.readKey('agent1-cert.pem')
+});
+
+server.listen(0, common.mustCall(function() {
+  const socket = tls.connect({
+    port: this.address().port,
+    rejectUnauthorized: false
+  });
+
+  socket.on('secureConnect', common.mustCall(function() {
+    for (let i = 0; i < events.defaultMaxListeners + 1; i++) {
+      socket[kReinitializeHandle]();
+    }
+
+    socket.destroy();
+  }));
+
+  socket.on('close', function() {
+    server.close();
+  });
+}));