Adding upstream version 115.7.0esr.upstream/115.7.0esr

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1284 insertions, 0 deletions

diff --git a/testing/xpcshell/node-ws/test/websocket-server.test.js b/testing/xpcshell/node-ws/test/websocket-server.test.js
new file mode 100644
index 0000000000..12928ff495
--- /dev/null
+++ b/testing/xpcshell/node-ws/test/websocket-server.test.js
@@ -0,0 +1,1284 @@
+/* eslint no-unused-vars: ["error", { "varsIgnorePattern": "^ws$" }] */
+
+'use strict';
+
+const assert = require('assert');
+const crypto = require('crypto');
+const https = require('https');
+const http = require('http');
+const path = require('path');
+const net = require('net');
+const fs = require('fs');
+const os = require('os');
+
+const Sender = require('../lib/sender');
+const WebSocket = require('..');
+const { NOOP } = require('../lib/constants');
+
+describe('WebSocketServer', () => {
+  describe('#ctor', () => {
+    it('throws an error if no option object is passed', () => {
+      assert.throws(
+        () => new WebSocket.Server(),
+        new RegExp(
+          '^TypeError: One and only one of the "port", "server", or ' +
+            '"noServer" options must be specified$'
+        )
+      );
+    });
+
+    describe('options', () => {
+      it('throws an error if required options are not specified', () => {
+        assert.throws(
+          () => new WebSocket.Server({}),
+          new RegExp(
+            '^TypeError: One and only one of the "port", "server", or ' +
+              '"noServer" options must be specified$'
+          )
+        );
+      });
+
+      it('throws an error if mutually exclusive options are specified', () => {
+        const server = http.createServer();
+        const variants = [
+          { port: 0, noServer: true, server },
+          { port: 0, noServer: true },
+          { port: 0, server },
+          { noServer: true, server }
+        ];
+
+        for (const options of variants) {
+          assert.throws(
+            () => new WebSocket.Server(options),
+            new RegExp(
+              '^TypeError: One and only one of the "port", "server", or ' +
+                '"noServer" options must be specified$'
+            )
+          );
+        }
+      });
+
+      it('exposes options passed to constructor', (done) => {
+        const wss = new WebSocket.Server({ port: 0 }, () => {
+          assert.strictEqual(wss.options.port, 0);
+          wss.close(done);
+        });
+      });
+
+      it('accepts the `maxPayload` option', (done) => {
+        const maxPayload = 20480;
+        const wss = new WebSocket.Server(
+          {
+            perMessageDeflate: true,
+            maxPayload,
+            port: 0
+          },
+          () => {
+            const ws = new WebSocket(`ws://localhost:${wss.address().port}`);
+
+            ws.on('open', ws.close);
+          }
+        );
+
+        wss.on('connection', (ws) => {
+          assert.strictEqual(ws._receiver._maxPayload, maxPayload);
+          assert.strictEqual(
+            ws._receiver._extensions['permessage-deflate']._maxPayload,
+            maxPayload
+          );
+          wss.close(done);
+        });
+      });
+
+      it('honors the `WebSocket` option', (done) => {
+        class CustomWebSocket extends WebSocket.WebSocket {
+          get foo() {
+            return 'foo';
+          }
+        }
+
+        const wss = new WebSocket.Server(
+          {
+            port: 0,
+            WebSocket: CustomWebSocket
+          },
+          () => {
+            const ws = new WebSocket(`ws://localhost:${wss.address().port}`);
+
+            ws.on('open', ws.close);
+          }
+        );
+
+        wss.on('connection', (ws) => {
+          assert.ok(ws instanceof CustomWebSocket);
+          assert.strictEqual(ws.foo, 'foo');
+          wss.close(done);
+        });
+      });
+    });
+
+    it('emits an error if http server bind fails', (done) => {
+      const wss1 = new WebSocket.Server({ port: 0 }, () => {
+        const wss2 = new WebSocket.Server({
+          port: wss1.address().port
+        });
+
+        wss2.on('error', () => wss1.close(done));
+      });
+    });
+
+    it('starts a server on a given port', (done) => {
+      const port = 1337;
+      const wss = new WebSocket.Server({ port }, () => {
+        const ws = new WebSocket(`ws://localhost:${port}`);
+
+        ws.on('open', ws.close);
+      });
+
+      wss.on('connection', () => wss.close(done));
+    });
+
+    it('binds the server on any IPv6 address when available', (done) => {
+      const wss = new WebSocket.Server({ port: 0 }, () => {
+        assert.strictEqual(wss._server.address().address, '::');
+        wss.close(done);
+      });
+    });
+
+    it('uses a precreated http server', (done) => {
+      const server = http.createServer();
+
+      server.listen(0, () => {
+        const wss = new WebSocket.Server({ server });
+
+        wss.on('connection', () => {
+          server.close(done);
+        });
+
+        const ws = new WebSocket(`ws://localhost:${server.address().port}`);
+
+        ws.on('open', ws.close);
+      });
+    });
+
+    it('426s for non-Upgrade requests', (done) => {
+      const wss = new WebSocket.Server({ port: 0 }, () => {
+        http.get(`http://localhost:${wss.address().port}`, (res) => {
+          let body = '';
+
+          assert.strictEqual(res.statusCode, 426);
+          res.on('data', (chunk) => {
+            body += chunk;
+          });
+          res.on('end', () => {
+            assert.strictEqual(body, http.STATUS_CODES[426]);
+            wss.close(done);
+          });
+        });
+      });
+    });
+
+    it('uses a precreated http server listening on unix socket', function (done) {
+      //
+      // Skip this test on Windows. The URL parser:
+      //
+      // - Throws an error if the named pipe uses backward slashes.
+      // - Incorrectly parses the path if the named pipe uses forward slashes.
+      //
+      if (process.platform === 'win32') return this.skip();
+
+      const server = http.createServer();
+      const sockPath = path.join(
+        os.tmpdir(),
+        `ws.${crypto.randomBytes(16).toString('hex')}.sock`
+      );
+
+      server.listen(sockPath, () => {
+        const wss = new WebSocket.Server({ server });
+
+        wss.on('connection', (ws, req) => {
+          if (wss.clients.size === 1) {
+            assert.strictEqual(req.url, '/foo?bar=bar');
+          } else {
+            assert.strictEqual(req.url, '/');
+
+            for (const client of wss.clients) {
+              client.close();
+            }
+
+            server.close(done);
+          }
+        });
+
+        const ws = new WebSocket(`ws+unix://${sockPath}:/foo?bar=bar`);
+        ws.on('open', () => new WebSocket(`ws+unix://${sockPath}`));
+      });
+    });
+  });
+
+  describe('#address', () => {
+    it('returns the address of the server', (done) => {
+      const wss = new WebSocket.Server({ port: 0 }, () => {
+        const addr = wss.address();
+
+        assert.deepStrictEqual(addr, wss._server.address());
+        wss.close(done);
+      });
+    });
+
+    it('throws an error when operating in "noServer" mode', () => {
+      const wss = new WebSocket.Server({ noServer: true });
+
+      assert.throws(() => {
+        wss.address();
+      }, /^Error: The server is operating in "noServer" mode$/);
+    });
+
+    it('returns `null` if called after close', (done) => {
+      const wss = new WebSocket.Server({ port: 0 }, () => {
+        wss.close(() => {
+          assert.strictEqual(wss.address(), null);
+          done();
+        });
+      });
+    });
+  });
+
+  describe('#close', () => {
+    it('does not throw if called multiple times', (done) => {
+      const wss = new WebSocket.Server({ port: 0 }, () => {
+        wss.on('close', done);
+
+        wss.close();
+        wss.close();
+        wss.close();
+      });
+    });
+
+    it("doesn't close a precreated server", (done) => {
+      const server = http.createServer();
+      const realClose = server.close;
+
+      server.close = () => {
+        done(new Error('Must not close pre-created server'));
+      };
+
+      const wss = new WebSocket.Server({ server });
+
+      wss.on('connection', () => {
+        wss.close();
+        server.close = realClose;
+        server.close(done);
+      });
+
+      server.listen(0, () => {
+        const ws = new WebSocket(`ws://localhost:${server.address().port}`);
+
+        ws.on('open', ws.close);
+      });
+    });
+
+    it('invokes the callback in noServer mode', (done) => {
+      const wss = new WebSocket.Server({ noServer: true });
+
+      wss.close(done);
+    });
+
+    it('cleans event handlers on precreated server', (done) => {
+      const server = http.createServer();
+      const wss = new WebSocket.Server({ server });
+
+      server.listen(0, () => {
+        wss.close(() => {
+          assert.strictEqual(server.listenerCount('listening'), 0);
+          assert.strictEqual(server.listenerCount('upgrade'), 0);
+          assert.strictEqual(server.listenerCount('error'), 0);
+
+          server.close(done);
+        });
+      });
+    });
+
+    it("emits the 'close' event after the server closes", (done) => {
+      let serverCloseEventEmitted = false;
+
+      const wss = new WebSocket.Server({ port: 0 }, () => {
+        net.createConnection({ port: wss.address().port });
+      });
+
+      wss._server.on('connection', (socket) => {
+        wss.close();
+
+        //
+        // The server is closing. Ensure this does not emit a `'close'`
+        // event before the server is actually closed.
+        //
+        wss.close();
+
+        process.nextTick(() => {
+          socket.end();
+        });
+      });
+
+      wss._server.on('close', () => {
+        serverCloseEventEmitted = true;
+      });
+
+      wss.on('close', () => {
+        assert.ok(serverCloseEventEmitted);
+        done();
+      });
+    });
+
+    it("emits the 'close' event if client tracking is disabled", (done) => {
+      const wss = new WebSocket.Server({
+        noServer: true,
+        clientTracking: false
+      });
+
+      wss.on('close', done);
+      wss.close();
+    });
+
+    it('calls the callback if the server is already closed', (done) => {
+      const wss = new WebSocket.Server({ port: 0 }, () => {
+        wss.close(() => {
+          assert.strictEqual(wss._state, 2);
+
+          wss.close((err) => {
+            assert.ok(err instanceof Error);
+            assert.strictEqual(err.message, 'The server is not running');
+            done();
+          });
+        });
+      });
+    });
+
+    it("emits the 'close' event if the server is already closed", (done) => {
+      const wss = new WebSocket.Server({ port: 0 }, () => {
+        wss.close(() => {
+          assert.strictEqual(wss._state, 2);
+
+          wss.on('close', done);
+          wss.close();
+        });
+      });
+    });
+  });
+
+  describe('#clients', () => {
+    it('returns a list of connected clients', (done) => {
+      const wss = new WebSocket.Server({ port: 0 }, () => {
+        assert.strictEqual(wss.clients.size, 0);
+
+        const ws = new WebSocket(`ws://localhost:${wss.address().port}`);
+
+        ws.on('open', ws.close);
+      });
+
+      wss.on('connection', () => {
+        assert.strictEqual(wss.clients.size, 1);
+        wss.close(done);
+      });
+    });
+
+    it('can be disabled', (done) => {
+      const wss = new WebSocket.Server(
+        { port: 0, clientTracking: false },
+        () => {
+          assert.strictEqual(wss.clients, undefined);
+          const ws = new WebSocket(`ws://localhost:${wss.address().port}`);
+
+          ws.on('open', () => ws.close());
+        }
+      );
+
+      wss.on('connection', (ws) => {
+        assert.strictEqual(wss.clients, undefined);
+        ws.on('close', () => wss.close(done));
+      });
+    });
+
+    it('is updated when client terminates the connection', (done) => {
+      const wss = new WebSocket.Server({ port: 0 }, () => {
+        const ws = new WebSocket(`ws://localhost:${wss.address().port}`);
+
+        ws.on('open', () => ws.terminate());
+      });
+
+      wss.on('connection', (ws) => {
+        ws.on('close', () => {
+          assert.strictEqual(wss.clients.size, 0);
+          wss.close(done);
+        });
+      });
+    });
+
+    it('is updated when client closes the connection', (done) => {
+      const wss = new WebSocket.Server({ port: 0 }, () => {
+        const ws = new WebSocket(`ws://localhost:${wss.address().port}`);
+
+        ws.on('open', () => ws.close());
+      });
+
+      wss.on('connection', (ws) => {
+        ws.on('close', () => {
+          assert.strictEqual(wss.clients.size, 0);
+          wss.close(done);
+        });
+      });
+    });
+  });
+
+  describe('#shouldHandle', () => {
+    it('returns true when the path matches', () => {
+      const wss = new WebSocket.Server({ noServer: true, path: '/foo' });
+
+      assert.strictEqual(wss.shouldHandle({ url: '/foo' }), true);
+      assert.strictEqual(wss.shouldHandle({ url: '/foo?bar=baz' }), true);
+    });
+
+    it("returns false when the path doesn't match", () => {
+      const wss = new WebSocket.Server({ noServer: true, path: '/foo' });
+
+      assert.strictEqual(wss.shouldHandle({ url: '/bar' }), false);
+    });
+  });
+
+  describe('#handleUpgrade', () => {
+    it('can be used for a pre-existing server', (done) => {
+      const server = http.createServer();
+
+      server.listen(0, () => {
+        const wss = new WebSocket.Server({ noServer: true });
+
+        server.on('upgrade', (req, socket, head) => {
+          wss.handleUpgrade(req, socket, head, (ws) => {
+            ws.send('hello');
+            ws.close();
+          });
+        });
+
+        const ws = new WebSocket(`ws://localhost:${server.address().port}`);
+
+        ws.on('message', (message, isBinary) => {
+          assert.deepStrictEqual(message, Buffer.from('hello'));
+          assert.ok(!isBinary);
+          server.close(done);
+        });
+      });
+    });
+
+    it("closes the connection when path doesn't match", (done) => {
+      const wss = new WebSocket.Server({ port: 0, path: '/ws' }, () => {
+        const req = http.get({
+          port: wss.address().port,
+          headers: {
+            Connection: 'Upgrade',
+            Upgrade: 'websocket',
+            'Sec-WebSocket-Key': 'dGhlIHNhbXBsZSBub25jZQ==',
+            'Sec-WebSocket-Version': 13
+          }
+        });
+
+        req.on('response', (res) => {
+          assert.strictEqual(res.statusCode, 400);
+          wss.close(done);
+        });
+      });
+    });
+
+    it('closes the connection when protocol version is Hixie-76', (done) => {
+      const wss = new WebSocket.Server({ port: 0 }, () => {
+        const req = http.get({
+          port: wss.address().port,
+          headers: {
+            Connection: 'Upgrade',
+            Upgrade: 'WebSocket',
+            'Sec-WebSocket-Key1': '4 @1  46546xW%0l 1 5',
+            'Sec-WebSocket-Key2': '12998 5 Y3 1  .P00',
+            'Sec-WebSocket-Protocol': 'sample'
+          }
+        });
+
+        req.on('response', (res) => {
+          assert.strictEqual(res.statusCode, 400);
+
+          const chunks = [];
+
+          res.on('data', (chunk) => {
+            chunks.push(chunk);
+          });
+
+          res.on('end', () => {
+            assert.strictEqual(
+              Buffer.concat(chunks).toString(),
+              'Missing or invalid Sec-WebSocket-Key header'
+            );
+            wss.close(done);
+          });
+        });
+      });
+    });
+  });
+
+  describe('#completeUpgrade', () => {
+    it('throws an error if called twice with the same socket', (done) => {
+      const server = http.createServer();
+
+      server.listen(0, () => {
+        const wss = new WebSocket.Server({ noServer: true });
+
+        server.on('upgrade', (req, socket, head) => {
+          wss.handleUpgrade(req, socket, head, (ws) => {
+            ws.close();
+          });
+          assert.throws(
+            () => wss.handleUpgrade(req, socket, head, NOOP),
+            (err) => {
+              assert.ok(err instanceof Error);
+              assert.strictEqual(
+                err.message,
+                'server.handleUpgrade() was called more than once with the ' +
+                  'same socket, possibly due to a misconfiguration'
+              );
+              return true;
+            }
+          );
+        });
+
+        const ws = new WebSocket(`ws://localhost:${server.address().port}`);
+
+        ws.on('open', () => {
+          ws.on('close', () => {
+            server.close(done);
+          });
+        });
+      });
+    });
+  });
+
+  describe('Connection establishing', () => {
+    it('fails if the HTTP method is not GET', (done) => {
+      const wss = new WebSocket.Server({ port: 0 }, () => {
+        const req = http.request({
+          method: 'POST',
+          port: wss.address().port,
+          headers: {
+            Connection: 'Upgrade',
+            Upgrade: 'websocket'
+          }
+        });
+
+        req.on('response', (res) => {
+          assert.strictEqual(res.statusCode, 405);
+
+          const chunks = [];
+
+          res.on('data', (chunk) => {
+            chunks.push(chunk);
+          });
+
+          res.on('end', () => {
+            assert.strictEqual(
+              Buffer.concat(chunks).toString(),
+              'Invalid HTTP method'
+            );
+            wss.close(done);
+          });
+        });
+
+        req.end();
+      });
+
+      wss.on('connection', () => {
+        done(new Error("Unexpected 'connection' event"));
+      });
+    });
+
+    it('fails if the Upgrade header field value is not "websocket"', (done) => {
+      const wss = new WebSocket.Server({ port: 0 }, () => {
+        const req = http.get({
+          port: wss.address().port,
+          headers: {
+            Connection: 'Upgrade',
+            Upgrade: 'foo'
+          }
+        });
+
+        req.on('response', (res) => {
+          assert.strictEqual(res.statusCode, 400);
+
+          const chunks = [];
+
+          res.on('data', (chunk) => {
+            chunks.push(chunk);
+          });
+
+          res.on('end', () => {
+            assert.strictEqual(
+              Buffer.concat(chunks).toString(),
+              'Invalid Upgrade header'
+            );
+            wss.close(done);
+          });
+        });
+      });
+
+      wss.on('connection', () => {
+        done(new Error("Unexpected 'connection' event"));
+      });
+    });
+
+    it('fails if the Sec-WebSocket-Key header is invalid (1/2)', (done) => {
+      const wss = new WebSocket.Server({ port: 0 }, () => {
+        const req = http.get({
+          port: wss.address().port,
+          headers: {
+            Connection: 'Upgrade',
+            Upgrade: 'websocket'
+          }
+        });
+
+        req.on('response', (res) => {
+          assert.strictEqual(res.statusCode, 400);
+
+          const chunks = [];
+
+          res.on('data', (chunk) => {
+            chunks.push(chunk);
+          });
+
+          res.on('end', () => {
+            assert.strictEqual(
+              Buffer.concat(chunks).toString(),
+              'Missing or invalid Sec-WebSocket-Key header'
+            );
+            wss.close(done);
+          });
+        });
+      });
+
+      wss.on('connection', () => {
+        done(new Error("Unexpected 'connection' event"));
+      });
+    });
+
+    it('fails if the Sec-WebSocket-Key header is invalid (2/2)', (done) => {
+      const wss = new WebSocket.Server({ port: 0 }, () => {
+        const req = http.get({
+          port: wss.address().port,
+          headers: {
+            Connection: 'Upgrade',
+            Upgrade: 'websocket',
+            'Sec-WebSocket-Key': 'P5l8BJcZwRc='
+          }
+        });
+
+        req.on('response', (res) => {
+          assert.strictEqual(res.statusCode, 400);
+
+          const chunks = [];
+
+          res.on('data', (chunk) => {
+            chunks.push(chunk);
+          });
+
+          res.on('end', () => {
+            assert.strictEqual(
+              Buffer.concat(chunks).toString(),
+              'Missing or invalid Sec-WebSocket-Key header'
+            );
+            wss.close(done);
+          });
+        });
+      });
+
+      wss.on('connection', () => {
+        done(new Error("Unexpected 'connection' event"));
+      });
+    });
+
+    it('fails if the Sec-WebSocket-Version header is invalid (1/2)', (done) => {
+      const wss = new WebSocket.Server({ port: 0 }, () => {
+        const req = http.get({
+          port: wss.address().port,
+          headers: {
+            Connection: 'Upgrade',
+            Upgrade: 'websocket',
+            'Sec-WebSocket-Key': 'dGhlIHNhbXBsZSBub25jZQ=='
+          }
+        });
+
+        req.on('response', (res) => {
+          assert.strictEqual(res.statusCode, 400);
+
+          const chunks = [];
+
+          res.on('data', (chunk) => {
+            chunks.push(chunk);
+          });
+
+          res.on('end', () => {
+            assert.strictEqual(
+              Buffer.concat(chunks).toString(),
+              'Missing or invalid Sec-WebSocket-Version header'
+            );
+            wss.close(done);
+          });
+        });
+      });
+
+      wss.on('connection', () => {
+        done(new Error("Unexpected 'connection' event"));
+      });
+    });
+
+    it('fails if the Sec-WebSocket-Version header is invalid (2/2)', (done) => {
+      const wss = new WebSocket.Server({ port: 0 }, () => {
+        const req = http.get({
+          port: wss.address().port,
+          headers: {
+            Connection: 'Upgrade',
+            Upgrade: 'websocket',
+            'Sec-WebSocket-Key': 'dGhlIHNhbXBsZSBub25jZQ==',
+            'Sec-WebSocket-Version': 12
+          }
+        });
+
+        req.on('response', (res) => {
+          assert.strictEqual(res.statusCode, 400);
+
+          const chunks = [];
+
+          res.on('data', (chunk) => {
+            chunks.push(chunk);
+          });
+
+          res.on('end', () => {
+            assert.strictEqual(
+              Buffer.concat(chunks).toString(),
+              'Missing or invalid Sec-WebSocket-Version header'
+            );
+            wss.close(done);
+          });
+        });
+      });
+
+      wss.on('connection', () => {
+        done(new Error("Unexpected 'connection' event"));
+      });
+    });
+
+    it('fails is the Sec-WebSocket-Protocol header is invalid', (done) => {
+      const wss = new WebSocket.Server({ port: 0 }, () => {
+        const req = http.get({
+          port: wss.address().port,
+          headers: {
+            Connection: 'Upgrade',
+            Upgrade: 'websocket',
+            'Sec-WebSocket-Key': 'dGhlIHNhbXBsZSBub25jZQ==',
+            'Sec-WebSocket-Version': 13,
+            'Sec-WebSocket-Protocol': 'foo;bar'
+          }
+        });
+
+        req.on('response', (res) => {
+          assert.strictEqual(res.statusCode, 400);
+
+          const chunks = [];
+
+          res.on('data', (chunk) => {
+            chunks.push(chunk);
+          });
+
+          res.on('end', () => {
+            assert.strictEqual(
+              Buffer.concat(chunks).toString(),
+              'Invalid Sec-WebSocket-Protocol header'
+            );
+            wss.close(done);
+          });
+        });
+      });
+
+      wss.on('connection', () => {
+        done(new Error("Unexpected 'connection' event"));
+      });
+    });
+
+    it('fails if the Sec-WebSocket-Extensions header is invalid', (done) => {
+      const wss = new WebSocket.Server(
+        {
+          perMessageDeflate: true,
+          port: 0
+        },
+        () => {
+          const req = http.get({
+            port: wss.address().port,
+            headers: {
+              Connection: 'Upgrade',
+              Upgrade: 'websocket',
+              'Sec-WebSocket-Key': 'dGhlIHNhbXBsZSBub25jZQ==',
+              'Sec-WebSocket-Version': 13,
+              'Sec-WebSocket-Extensions':
+                'permessage-deflate; server_max_window_bits=foo'
+            }
+          });
+
+          req.on('response', (res) => {
+            assert.strictEqual(res.statusCode, 400);
+
+            const chunks = [];
+
+            res.on('data', (chunk) => {
+              chunks.push(chunk);
+            });
+
+            res.on('end', () => {
+              assert.strictEqual(
+                Buffer.concat(chunks).toString(),
+                'Invalid or unacceptable Sec-WebSocket-Extensions header'
+              );
+              wss.close(done);
+            });
+          });
+        }
+      );
+
+      wss.on('connection', () => {
+        done(new Error("Unexpected 'connection' event"));
+      });
+    });
+
+    it("emits the 'wsClientError' event", (done) => {
+      const wss = new WebSocket.Server({ port: 0 }, () => {
+        const req = http.request({
+          method: 'POST',
+          port: wss.address().port,
+          headers: {
+            Connection: 'Upgrade',
+            Upgrade: 'websocket'
+          }
+        });
+
+        req.on('response', (res) => {
+          assert.strictEqual(res.statusCode, 400);
+          wss.close(done);
+        });
+
+        req.end();
+      });
+
+      wss.on('wsClientError', (err, socket, request) => {
+        assert.ok(err instanceof Error);
+        assert.strictEqual(err.message, 'Invalid HTTP method');
+
+        assert.ok(request instanceof http.IncomingMessage);
+        assert.strictEqual(request.method, 'POST');
+
+        socket.end('HTTP/1.1 400 Bad Request\r\n\r\n');
+      });
+
+      wss.on('connection', () => {
+        done(new Error("Unexpected 'connection' event"));
+      });
+    });
+
+    it('fails if the WebSocket server is closing or closed', (done) => {
+      const server = http.createServer();
+      const wss = new WebSocket.Server({ noServer: true });
+
+      server.on('upgrade', (req, socket, head) => {
+        wss.close();
+        wss.handleUpgrade(req, socket, head, () => {
+          done(new Error('Unexpected callback invocation'));
+        });
+      });
+
+      server.listen(0, () => {
+        const ws = new WebSocket(`ws://localhost:${server.address().port}`);
+
+        ws.on('unexpected-response', (req, res) => {
+          assert.strictEqual(res.statusCode, 503);
+          res.resume();
+          server.close(done);
+        });
+      });
+    });
+
+    it('handles unsupported extensions', (done) => {
+      const wss = new WebSocket.Server(
+        {
+          perMessageDeflate: true,
+          port: 0
+        },
+        () => {
+          const req = http.get({
+            port: wss.address().port,
+            headers: {
+              Connection: 'Upgrade',
+              Upgrade: 'websocket',
+              'Sec-WebSocket-Key': 'dGhlIHNhbXBsZSBub25jZQ==',
+              'Sec-WebSocket-Version': 13,
+              'Sec-WebSocket-Extensions': 'foo; bar'
+            }
+          });
+
+          req.on('upgrade', (res, socket, head) => {
+            if (head.length) socket.unshift(head);
+
+            socket.once('data', (chunk) => {
+              assert.strictEqual(chunk[0], 0x88);
+              socket.destroy();
+              wss.close(done);
+            });
+          });
+        }
+      );
+
+      wss.on('connection', (ws) => {
+        assert.strictEqual(ws.extensions, '');
+        ws.close();
+      });
+    });
+
+    describe('`verifyClient`', () => {
+      it('can reject client synchronously', (done) => {
+        const wss = new WebSocket.Server(
+          {
+            verifyClient: () => false,
+            port: 0
+          },
+          () => {
+            const req = http.get({
+              port: wss.address().port,
+              headers: {
+                Connection: 'Upgrade',
+                Upgrade: 'websocket',
+                'Sec-WebSocket-Key': 'dGhlIHNhbXBsZSBub25jZQ==',
+                'Sec-WebSocket-Version': 8
+              }
+            });
+
+            req.on('response', (res) => {
+              assert.strictEqual(res.statusCode, 401);
+              wss.close(done);
+            });
+          }
+        );
+
+        wss.on('connection', () => {
+          done(new Error("Unexpected 'connection' event"));
+        });
+      });
+
+      it('can accept client synchronously', (done) => {
+        const server = https.createServer({
+          cert: fs.readFileSync('test/fixtures/certificate.pem'),
+          key: fs.readFileSync('test/fixtures/key.pem')
+        });
+
+        const wss = new WebSocket.Server({
+          verifyClient: (info) => {
+            assert.strictEqual(info.origin, 'https://example.com');
+            assert.strictEqual(info.req.headers.foo, 'bar');
+            assert.ok(info.secure, true);
+            return true;
+          },
+          server
+        });
+
+        wss.on('connection', () => {
+          server.close(done);
+        });
+
+        server.listen(0, () => {
+          const ws = new WebSocket(`wss://localhost:${server.address().port}`, {
+            headers: { Origin: 'https://example.com', foo: 'bar' },
+            rejectUnauthorized: false
+          });
+
+          ws.on('open', ws.close);
+        });
+      });
+
+      it('can accept client asynchronously', (done) => {
+        const wss = new WebSocket.Server(
+          {
+            verifyClient: (o, cb) => process.nextTick(cb, true),
+            port: 0
+          },
+          () => {
+            const ws = new WebSocket(`ws://localhost:${wss.address().port}`);
+
+            ws.on('open', ws.close);
+          }
+        );
+
+        wss.on('connection', () => wss.close(done));
+      });
+
+      it('can reject client asynchronously', (done) => {
+        const wss = new WebSocket.Server(
+          {
+            verifyClient: (info, cb) => process.nextTick(cb, false),
+            port: 0
+          },
+          () => {
+            const req = http.get({
+              port: wss.address().port,
+              headers: {
+                Connection: 'Upgrade',
+                Upgrade: 'websocket',
+                'Sec-WebSocket-Key': 'dGhlIHNhbXBsZSBub25jZQ==',
+                'Sec-WebSocket-Version': 8
+              }
+            });
+
+            req.on('response', (res) => {
+              assert.strictEqual(res.statusCode, 401);
+              wss.close(done);
+            });
+          }
+        );
+
+        wss.on('connection', () => {
+          done(new Error("Unexpected 'connection' event"));
+        });
+      });
+
+      it('can reject client asynchronously w/ status code', (done) => {
+        const wss = new WebSocket.Server(
+          {
+            verifyClient: (info, cb) => process.nextTick(cb, false, 404),
+            port: 0
+          },
+          () => {
+            const req = http.get({
+              port: wss.address().port,
+              headers: {
+                Connection: 'Upgrade',
+                Upgrade: 'websocket',
+                'Sec-WebSocket-Key': 'dGhlIHNhbXBsZSBub25jZQ==',
+                'Sec-WebSocket-Version': 8
+              }
+            });
+
+            req.on('response', (res) => {
+              assert.strictEqual(res.statusCode, 404);
+              wss.close(done);
+            });
+          }
+        );
+
+        wss.on('connection', () => {
+          done(new Error("Unexpected 'connection' event"));
+        });
+      });
+
+      it('can reject client asynchronously w/ custom headers', (done) => {
+        const wss = new WebSocket.Server(
+          {
+            verifyClient: (info, cb) => {
+              process.nextTick(cb, false, 503, '', { 'Retry-After': 120 });
+            },
+            port: 0
+          },
+          () => {
+            const req = http.get({
+              port: wss.address().port,
+              headers: {
+                Connection: 'Upgrade',
+                Upgrade: 'websocket',
+                'Sec-WebSocket-Key': 'dGhlIHNhbXBsZSBub25jZQ==',
+                'Sec-WebSocket-Version': 8
+              }
+            });
+
+            req.on('response', (res) => {
+              assert.strictEqual(res.statusCode, 503);
+              assert.strictEqual(res.headers['retry-after'], '120');
+              wss.close(done);
+            });
+          }
+        );
+
+        wss.on('connection', () => {
+          done(new Error("Unexpected 'connection' event"));
+        });
+      });
+    });
+
+    it("doesn't emit the 'connection' event if socket is closed prematurely", (done) => {
+      const server = http.createServer();
+
+      server.listen(0, () => {
+        const wss = new WebSocket.Server({
+          verifyClient: ({ req: { socket } }, cb) => {
+            assert.strictEqual(socket.readable, true);
+            assert.strictEqual(socket.writable, true);
+
+            socket.on('end', () => {
+              assert.strictEqual(socket.readable, false);
+              assert.strictEqual(socket.writable, true);
+              cb(true);
+            });
+          },
+          server
+        });
+
+        wss.on('connection', () => {
+          done(new Error("Unexpected 'connection' event"));
+        });
+
+        const socket = net.connect(
+          {
+            port: server.address().port,
+            allowHalfOpen: true
+          },
+          () => {
+            socket.end(
+              [
+                'GET / HTTP/1.1',
+                'Host: localhost',
+                'Upgrade: websocket',
+                'Connection: Upgrade',
+                'Sec-WebSocket-Key: dGhlIHNhbXBsZSBub25jZQ==',
+                'Sec-WebSocket-Version: 13',
+                '\r\n'
+              ].join('\r\n')
+            );
+          }
+        );
+
+        socket.on('end', () => {
+          wss.close();
+          server.close(done);
+        });
+      });
+    });
+
+    it('handles data passed along with the upgrade request', (done) => {
+      const wss = new WebSocket.Server({ port: 0 }, () => {
+        const req = http.request({
+          port: wss.address().port,
+          headers: {
+            Connection: 'Upgrade',
+            Upgrade: 'websocket',
+            'Sec-WebSocket-Key': 'dGhlIHNhbXBsZSBub25jZQ==',
+            'Sec-WebSocket-Version': 13
+          }
+        });
+
+        const list = Sender.frame(Buffer.from('Hello'), {
+          fin: true,
+          rsv1: false,
+          opcode: 0x01,
+          mask: true,
+          readOnly: false
+        });
+
+        req.write(Buffer.concat(list));
+        req.end();
+      });
+
+      wss.on('connection', (ws) => {
+        ws.on('message', (data, isBinary) => {
+          assert.deepStrictEqual(data, Buffer.from('Hello'));
+          assert.ok(!isBinary);
+          wss.close(done);
+        });
+      });
+    });
+
+    describe('`handleProtocols`', () => {
+      it('allows to select a subprotocol', (done) => {
+        const handleProtocols = (protocols, request) => {
+          assert.ok(request instanceof http.IncomingMessage);
+          assert.strictEqual(request.url, '/');
+          return Array.from(protocols).pop();
+        };
+        const wss = new WebSocket.Server({ handleProtocols, port: 0 }, () => {
+          const ws = new WebSocket(`ws://localhost:${wss.address().port}`, [
+            'foo',
+            'bar'
+          ]);
+
+          ws.on('open', () => {
+            assert.strictEqual(ws.protocol, 'bar');
+            wss.close(done);
+          });
+        });
+
+        wss.on('connection', (ws) => {
+          ws.close();
+        });
+      });
+    });
+
+    it("emits the 'headers' event", (done) => {
+      const wss = new WebSocket.Server({ port: 0 }, () => {
+        const ws = new WebSocket(`ws://localhost:${wss.address().port}`);
+
+        ws.on('open', ws.close);
+      });
+
+      wss.on('headers', (headers, request) => {
+        assert.deepStrictEqual(headers.slice(0, 3), [
+          'HTTP/1.1 101 Switching Protocols',
+          'Upgrade: websocket',
+          'Connection: Upgrade'
+        ]);
+        assert.ok(request instanceof http.IncomingMessage);
+        assert.strictEqual(request.url, '/');
+
+        wss.on('connection', () => wss.close(done));
+      });
+    });
+  });
+
+  describe('permessage-deflate', () => {
+    it('is disabled by default', (done) => {
+      const wss = new WebSocket.Server({ port: 0 }, () => {
+        const ws = new WebSocket(`ws://localhost:${wss.address().port}`);
+
+        ws.on('open', ws.close);
+      });
+
+      wss.on('connection', (ws, req) => {
+        assert.strictEqual(
+          req.headers['sec-websocket-extensions'],
+          'permessage-deflate; client_max_window_bits'
+        );
+        assert.strictEqual(ws.extensions, '');
+        wss.close(done);
+      });
+    });
+
+    it('uses configuration options', (done) => {
+      const wss = new WebSocket.Server(
+        {
+          perMessageDeflate: { clientMaxWindowBits: 8 },
+          port: 0
+        },
+        () => {
+          const ws = new WebSocket(`ws://localhost:${wss.address().port}`);
+
+          ws.on('upgrade', (res) => {
+            assert.strictEqual(
+              res.headers['sec-websocket-extensions'],
+              'permessage-deflate; client_max_window_bits=8'
+            );
+
+            wss.close(done);
+          });
+        }
+      );
+
+      wss.on('connection', (ws) => {
+        ws.close();
+      });
+    });
+  });
+});