test: rename regression tests with descriptive filenames

Rename test-dgram-regress-4496 to test-dgram-typeerror-buffer to test-dgram-send-invalid-msg-type
Rename test-http-regr-nodejsgh-2821 to test-http-request-large-payload
Rename test-child-process-fork-regr-nodejsgh-2847 to test-child-process-fork-closed-channel-segfault
Rename test-http-pipeline-regr-2639 to test-http-pipeline-serverresponse-assertionerror
Rename test-http-pipeline-regr-3332 to test-http-pipeline-requests-connection-leak
Rename test-http-pipeline-regr-3508 to test-http-pipeline-socket-parser-typeerror

Refs: nodejs#19105
Refs: https://github.com/nodejs/node/blob/master/doc/guides/writing-tests.md#test-structure

test/parallel/test-async-wrap-tlssocket-asyncreset.js

@@ -0,0 +1,66 @@
+'use strict';
+const common = require('../common');
+if (!common.hasCrypto) common.skip('missing crypto');
+const fixtures = require('../common/fixtures');
+
+// An HTTP Agent reuses a TLSSocket, and makes a failed call to `asyncReset`.
+// Refs: https://github.com/nodejs/node/issues/13045
+
+const assert = require('assert');
+const https = require('https');
+
+const serverOptions = {
+  key: fixtures.readKey('agent1-key.pem'),
+  cert: fixtures.readKey('agent1-cert.pem'),
+  ca: fixtures.readKey('ca1-cert.pem')
+};
+
+const server = https.createServer(
+  serverOptions,
+  common.mustCall((req, res) => {
+    res.end('hello world\n');
+  }, 2)
+);
+
+server.listen(
+  0,
+  common.mustCall(function() {
+    const port = this.address().port;
+    const clientOptions = {
+      agent: new https.Agent({
+        keepAlive: true,
+        rejectUnauthorized: false
+      }),
+      port: port
+    };
+
+    const req = https.get(
+      clientOptions,
+      common.mustCall((res) => {
+        assert.strictEqual(res.statusCode, 200);
+        res.on('error', (err) => assert.fail(err));
+        res.socket.on('error', (err) => assert.fail(err));
+        res.resume();
+        // drain the socket and wait for it to be free to reuse
+        res.socket.once('free', () => {
+          // This is the pain point. Internally the Agent will call
+          // `socket._handle.asyncReset()` and if the _handle does not implement
+          // `asyncReset` this will throw TypeError
+          const req2 = https.get(
+            clientOptions,
+            common.mustCall((res2) => {
+              assert.strictEqual(res.statusCode, 200);
+              res2.on('error', (err) => assert.fail(err));
+              res2.socket.on('error', (err) => assert.fail(err));
+              // this should be the end of the test
+              res2.destroy();
+              server.close();
+            })
+          );
+          req2.on('error', (err) => assert.fail(err));
+        });
+      })
+    );
+    req.on('error', (err) => assert.fail(err));
+  })
+);

test/parallel/test-child-process-fork-closed-channel-segfault.js

@@ -0,0 +1,75 @@
+'use strict';
+const common = require('../common');
+
+// Before https://github.com/nodejs/node/pull/2847 a child process trying
+// (asynchronously) to use the closed channel to it's creator caused a segfault.
+
+const assert = require('assert');
+const cluster = require('cluster');
+const net = require('net');
+
+if (!cluster.isMaster) {
+  // Exit on first received handle to leave the queue non-empty in master
+  process.on('message', function() {
+    process.exit(1);
+  });
+  return;
+}
+
+const server = net
+  .createServer(function(s) {
+    if (common.isWindows) {
+      s.on('error', function(err) {
+        // Prevent possible ECONNRESET errors from popping up
+        if (err.code !== 'ECONNRESET') throw err;
+      });
+    }
+    setTimeout(function() {
+      s.destroy();
+    }, 100);
+  })
+  .listen(0, function() {
+    const worker = cluster.fork();
+
+    function send(callback) {
+      const s = net.connect(server.address().port, function() {
+        worker.send({}, s, callback);
+      });
+
+      // https://github.com/nodejs/node/issues/3635#issuecomment-157714683
+      // ECONNREFUSED or ECONNRESET errors can happen if this connection is
+      // still establishing while the server has already closed.
+      // EMFILE can happen if the worker __and__ the server had already closed.
+      s.on('error', function(err) {
+        if (
+          err.code !== 'ECONNRESET' &&
+          err.code !== 'ECONNREFUSED' &&
+          err.code !== 'EMFILE'
+        ) {
+          throw err;
+        }
+      });
+    }
+
+    worker.process.once(
+      'close',
+      common.mustCall(function() {
+        // Otherwise the crash on `channel.fd` access may happen
+        assert.strictEqual(worker.process.channel, null);
+        server.close();
+      })
+    );
+
+    worker.on('online', function() {
+      send(function(err) {
+        assert.ifError(err);
+        send(function(err) {
+          // Ignore errors when sending the second handle because the worker
+          // may already have exited.
+          if (err && err.message !== 'Channel closed') {
+            throw err;
+          }
+        });
+      });
+    });
+  });

test/parallel/test-http-pipeline-assertionerror-finish.js

@@ -0,0 +1,34 @@
+'use strict';
+const common = require('../common');
+
+// This test ensures that Node.js doesn't crash with an AssertionError at
+// `ServerResponse.resOnFinish` because of an out-of-order 'finish' bug in
+// pipelining.
+// https://github.com/nodejs/node/issues/2639
+
+const http = require('http');
+const net = require('net');
+
+const COUNT = 10;
+
+const server = http
+  .createServer(
+    common.mustCall((req, res) => {
+      // Close the server, we have only one TCP connection anyway
+      server.close();
+      res.writeHead(200);
+      res.write('data');
+
+      setTimeout(function() {
+        res.end();
+      }, (Math.random() * 100) | 0);
+    }, COUNT)
+  )
+  .listen(0, function() {
+    const s = net.connect(this.address().port);
+
+    const big = 'GET / HTTP/1.0\r\n\r\n'.repeat(COUNT);
+
+    s.write(big);
+    s.resume();
+  });