cluster: reset handle index on close

It allows reopening a server after it has been closed.

Fixes: https://github.com/nodejs/node/issues/6693
PR-URL: https://github.com/nodejs/node/pull/6981
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Ron Korving <ron@ronkorving.nl>
Reviewed-By: James M Snell <jasnell@gmail.com>

1 files changed, 37 insertions, 0 deletions

diff --git a/test/parallel/test-cluster-server-restart-rr.js b/test/parallel/test-cluster-server-restart-rr.js
new file mode 100644
index 0000000000..724a77b71a
--- /dev/null
+++ b/test/parallel/test-cluster-server-restart-rr.js
@@ -0,0 +1,37 @@
+'use strict';
+const common = require('../common');
+const assert = require('assert');
+const cluster = require('cluster');
+
+cluster.schedulingPolicy = cluster.SCHED_RR;
+
+if (cluster.isMaster) {
+  const worker1 = cluster.fork();
+  worker1.on('listening', common.mustCall(() => {
+    const worker2 = cluster.fork();
+    worker2.on('exit', (code, signal) => {
+      assert.strictEqual(code, 0, 'worker2 did not exit normally');
+      assert.strictEqual(signal, null, 'worker2 did not exit normally');
+      worker1.disconnect();
+    });
+  }));
+
+  worker1.on('exit', common.mustCall((code, signal) => {
+    assert.strictEqual(code, 0, 'worker1 did not exit normally');
+    assert.strictEqual(signal, null, 'worker1 did not exit normally');
+  }));
+} else {
+  const net = require('net');
+  const server = net.createServer();
+  server.listen(common.PORT, common.mustCall(() => {
+    if (cluster.worker.id === 2) {
+      server.close(() => {
+        server.listen(common.PORT, common.mustCall(() => {
+          server.close(() => {
+            process.disconnect();
+          });
+        }));
+      });
+    }
+  }));
+}