test: add http2/tls destroy regression test

Test part of 0c25cdf,
specifically for v8.x.

PR-URL: #21598
Reviewed-By: Myles Borins <myles.borins@gmail.com>

Author: addaleax

test/parallel/test-http2-tls-disconnect.js

@@ -0,0 +1,32 @@
+'use strict';
+const common = require('../common');
+const fixtures = require('../common/fixtures');
+
+if (!common.hasCrypto)
+  common.skip('missing crypto');
+
+const child_process = require('child_process');
+const http2 = require('http2');
+const fs = require('fs');
+
+const key = fixtures.readKey('agent8-key.pem', 'binary');
+const cert = fixtures.readKey('agent8-cert.pem', 'binary');
+
+const server = http2.createSecureServer({ key, cert }, (request, response) => {
+  fs.createReadStream(process.execPath).pipe(response);
+});
+
+// This should be doable with a reproduction purely written in Node;
+// that just requires somebody to take the time and actually do it.
+server.listen(0, () => {
+  const proc = child_process.spawn('h2load', [
+    '-n', '1000',
+    `https://localhost:${server.address().port}/`
+  ]);
+  proc.on('error', (err) => {
+    if (err.code === 'ENOENT')
+      common.skip('no h2load');
+  });
+  proc.on('exit', () => server.close());
+  setTimeout(() => proc.kill(2), 100);
+});