1 files changed, 1086 insertions, 0 deletions
diff --git a/testing/xpcshell/node-ws/test/receiver.test.js b/testing/xpcshell/node-ws/test/receiver.test.js
new file mode 100644
index 0000000000..7ee35f7402
--- /dev/null
+++ b/testing/xpcshell/node-ws/test/receiver.test.js
@@ -0,0 +1,1086 @@
+'use strict';
+
+const assert = require('assert');
+const crypto = require('crypto');
+
+const PerMessageDeflate = require('../lib/permessage-deflate');
+const Receiver = require('../lib/receiver');
+const Sender = require('../lib/sender');
+const { EMPTY_BUFFER, kStatusCode } = require('../lib/constants');
+
+describe('Receiver', () => {
+  it('parses an unmasked text message', (done) => {
+    const receiver = new Receiver();
+
+    receiver.on('message', (data, isBinary) => {
+      assert.deepStrictEqual(data, Buffer.from('Hello'));
+      assert.ok(!isBinary);
+      done();
+    });
+
+    receiver.write(Buffer.from('810548656c6c6f', 'hex'));
+  });
+
+  it('parses a close message', (done) => {
+    const receiver = new Receiver();
+
+    receiver.on('conclude', (code, data) => {
+      assert.strictEqual(code, 1005);
+      assert.strictEqual(data, EMPTY_BUFFER);
+      done();
+    });
+
+    receiver.write(Buffer.from('8800', 'hex'));
+  });
+
+  it('parses a close message spanning multiple writes', (done) => {
+    const receiver = new Receiver();
+
+    receiver.on('conclude', (code, data) => {
+      assert.strictEqual(code, 1000);
+      assert.deepStrictEqual(data, Buffer.from('DONE'));
+      done();
+    });
+
+    receiver.write(Buffer.from('8806', 'hex'));
+    receiver.write(Buffer.from('03e8444F4E45', 'hex'));
+  });
+
+  it('parses a masked text message', (done) => {
+    const receiver = new Receiver({ isServer: true });
+
+    receiver.on('message', (data, isBinary) => {
+      assert.deepStrictEqual(data, Buffer.from('5:::{"name":"echo"}'));
+      assert.ok(!isBinary);
+      done();
+    });
+
+    receiver.write(
+      Buffer.from('81933483a86801b992524fa1c60959e68a5216e6cb005ba1d5', 'hex')
+    );
+  });
+
+  it('parses a masked text message longer than 125 B', (done) => {
+    const receiver = new Receiver({ isServer: true });
+    const msg = Buffer.from('A'.repeat(200));
+
+    const list = Sender.frame(msg, {
+      fin: true,
+      rsv1: false,
+      opcode: 0x01,
+      mask: true,
+      readOnly: true
+    });
+
+    const frame = Buffer.concat(list);
+
+    receiver.on('message', (data, isBinary) => {
+      assert.deepStrictEqual(data, msg);
+      assert.ok(!isBinary);
+      done();
+    });
+
+    receiver.write(frame.slice(0, 2));
+    setImmediate(() => receiver.write(frame.slice(2)));
+  });
+
+  it('parses a really long masked text message', (done) => {
+    const receiver = new Receiver({ isServer: true });
+    const msg = Buffer.from('A'.repeat(64 * 1024));
+
+    const list = Sender.frame(msg, {
+      fin: true,
+      rsv1: false,
+      opcode: 0x01,
+      mask: true,
+      readOnly: true
+    });
+
+    const frame = Buffer.concat(list);
+
+    receiver.on('message', (data, isBinary) => {
+      assert.deepStrictEqual(data, msg);
+      assert.ok(!isBinary);
+      done();
+    });
+
+    receiver.write(frame);
+  });
+
+  it('parses a 300 B fragmented masked text message', (done) => {
+    const receiver = new Receiver({ isServer: true });
+    const msg = Buffer.from('A'.repeat(300));
+
+    const fragment1 = msg.slice(0, 150);
+    const fragment2 = msg.slice(150);
+
+    const options = { rsv1: false, mask: true, readOnly: true };
+
+    const frame1 = Buffer.concat(
+      Sender.frame(fragment1, {
+        fin: false,
+        opcode: 0x01,
+        ...options
+      })
+    );
+    const frame2 = Buffer.concat(
+      Sender.frame(fragment2, {
+        fin: true,
+        opcode: 0x00,
+        ...options
+      })
+    );
+
+    receiver.on('message', (data, isBinary) => {
+      assert.deepStrictEqual(data, msg);
+      assert.ok(!isBinary);
+      done();
+    });
+
+    receiver.write(frame1);
+    receiver.write(frame2);
+  });
+
+  it('parses a ping message', (done) => {
+    const receiver = new Receiver({ isServer: true });
+    const msg = Buffer.from('Hello');
+
+    const list = Sender.frame(msg, {
+      fin: true,
+      rsv1: false,
+      opcode: 0x09,
+      mask: true,
+      readOnly: true
+    });
+
+    const frame = Buffer.concat(list);
+
+    receiver.on('ping', (data) => {
+      assert.deepStrictEqual(data, msg);
+      done();
+    });
+
+    receiver.write(frame);
+  });
+
+  it('parses a ping message with no data', (done) => {
+    const receiver = new Receiver();
+
+    receiver.on('ping', (data) => {
+      assert.strictEqual(data, EMPTY_BUFFER);
+      done();
+    });
+
+    receiver.write(Buffer.from('8900', 'hex'));
+  });
+
+  it('parses a 300 B fragmented masked text message with a ping in the middle (1/2)', (done) => {
+    const receiver = new Receiver({ isServer: true });
+    const msg = Buffer.from('A'.repeat(300));
+    const pingMessage = Buffer.from('Hello');
+
+    const fragment1 = msg.slice(0, 150);
+    const fragment2 = msg.slice(150);
+
+    const options = { rsv1: false, mask: true, readOnly: true };
+
+    const frame1 = Buffer.concat(
+      Sender.frame(fragment1, {
+        fin: false,
+        opcode: 0x01,
+        ...options
+      })
+    );
+    const frame2 = Buffer.concat(
+      Sender.frame(pingMessage, {
+        fin: true,
+        opcode: 0x09,
+        ...options
+      })
+    );
+    const frame3 = Buffer.concat(
+      Sender.frame(fragment2, {
+        fin: true,
+        opcode: 0x00,
+        ...options
+      })
+    );
+
+    let gotPing = false;
+
+    receiver.on('message', (data, isBinary) => {
+      assert.deepStrictEqual(data, msg);
+      assert.ok(!isBinary);
+      assert.ok(gotPing);
+      done();
+    });
+    receiver.on('ping', (data) => {
+      gotPing = true;
+      assert.ok(data.equals(pingMessage));
+    });
+
+    receiver.write(frame1);
+    receiver.write(frame2);
+    receiver.write(frame3);
+  });
+
+  it('parses a 300 B fragmented masked text message with a ping in the middle (2/2)', (done) => {
+    const receiver = new Receiver({ isServer: true });
+    const msg = Buffer.from('A'.repeat(300));
+    const pingMessage = Buffer.from('Hello');
+
+    const fragment1 = msg.slice(0, 150);
+    const fragment2 = msg.slice(150);
+
+    const options = { rsv1: false, mask: true, readOnly: false };
+
+    const frame1 = Buffer.concat(
+      Sender.frame(Buffer.from(fragment1), {
+        fin: false,
+        opcode: 0x01,
+        ...options
+      })
+    );
+    const frame2 = Buffer.concat(
+      Sender.frame(Buffer.from(pingMessage), {
+        fin: true,
+        opcode: 0x09,
+        ...options
+      })
+    );
+    const frame3 = Buffer.concat(
+      Sender.frame(Buffer.from(fragment2), {
+        fin: true,
+        opcode: 0x00,
+        ...options
+      })
+    );
+
+    let chunks = [];
+    const splitBuffer = (buf) => {
+      const i = Math.floor(buf.length / 2);
+      return [buf.slice(0, i), buf.slice(i)];
+    };
+
+    chunks = chunks.concat(splitBuffer(frame1));
+    chunks = chunks.concat(splitBuffer(frame2));
+    chunks = chunks.concat(splitBuffer(frame3));
+
+    let gotPing = false;
+
+    receiver.on('message', (data, isBinary) => {
+      assert.deepStrictEqual(data, msg);
+      assert.ok(!isBinary);
+      assert.ok(gotPing);
+      done();
+    });
+    receiver.on('ping', (data) => {
+      gotPing = true;
+      assert.ok(data.equals(pingMessage));
+    });
+
+    for (let i = 0; i < chunks.length; ++i) {
+      receiver.write(chunks[i]);
+    }
+  });
+
+  it('parses a 100 B masked binary message', (done) => {
+    const receiver = new Receiver({ isServer: true });
+    const msg = crypto.randomBytes(100);
+
+    const list = Sender.frame(msg, {
+      fin: true,
+      rsv1: false,
+      opcode: 0x02,
+      mask: true,
+      readOnly: true
+    });
+
+    const frame = Buffer.concat(list);
+
+    receiver.on('message', (data, isBinary) => {
+      assert.deepStrictEqual(data, msg);
+      assert.ok(isBinary);
+      done();
+    });
+
+    receiver.write(frame);
+  });
+
+  it('parses a 256 B masked binary message', (done) => {
+    const receiver = new Receiver({ isServer: true });
+    const msg = crypto.randomBytes(256);
+
+    const list = Sender.frame(msg, {
+      fin: true,
+      rsv1: false,
+      opcode: 0x02,
+      mask: true,
+      readOnly: true
+    });
+
+    const frame = Buffer.concat(list);
+
+    receiver.on('message', (data, isBinary) => {
+      assert.deepStrictEqual(data, msg);
+      assert.ok(isBinary);
+      done();
+    });
+
+    receiver.write(frame);
+  });
+
+  it('parses a 200 KiB masked binary message', (done) => {
+    const receiver = new Receiver({ isServer: true });
+    const msg = crypto.randomBytes(200 * 1024);
+
+    const list = Sender.frame(msg, {
+      fin: true,
+      rsv1: false,
+      opcode: 0x02,
+      mask: true,
+      readOnly: true
+    });
+
+    const frame = Buffer.concat(list);
+
+    receiver.on('message', (data, isBinary) => {
+      assert.deepStrictEqual(data, msg);
+      assert.ok(isBinary);
+      done();
+    });
+
+    receiver.write(frame);
+  });
+
+  it('parses a 200 KiB unmasked binary message', (done) => {
+    const receiver = new Receiver();
+    const msg = crypto.randomBytes(200 * 1024);
+
+    const list = Sender.frame(msg, {
+      fin: true,
+      rsv1: false,
+      opcode: 0x02,
+      mask: false,
+      readOnly: true
+    });
+
+    const frame = Buffer.concat(list);
+
+    receiver.on('message', (data, isBinary) => {
+      assert.deepStrictEqual(data, msg);
+      assert.ok(isBinary);
+      done();
+    });
+
+    receiver.write(frame);
+  });
+
+  it('parses a compressed message', (done) => {
+    const perMessageDeflate = new PerMessageDeflate();
+    perMessageDeflate.accept([{}]);
+
+    const receiver = new Receiver({
+      extensions: {
+        'permessage-deflate': perMessageDeflate
+      }
+    });
+    const buf = Buffer.from('Hello');
+
+    receiver.on('message', (data, isBinary) => {
+      assert.deepStrictEqual(data, buf);
+      assert.ok(!isBinary);
+      done();
+    });
+
+    perMessageDeflate.compress(buf, true, (err, data) => {
+      if (err) return done(err);
+
+      receiver.write(Buffer.from([0xc1, data.length]));
+      receiver.write(data);
+    });
+  });
+
+  it('parses a compressed and fragmented message', (done) => {
+    const perMessageDeflate = new PerMessageDeflate();
+    perMessageDeflate.accept([{}]);
+
+    const receiver = new Receiver({
+      extensions: {
+        'permessage-deflate': perMessageDeflate
+      }
+    });
+    const buf1 = Buffer.from('foo');
+    const buf2 = Buffer.from('bar');
+
+    receiver.on('message', (data, isBinary) => {
+      assert.deepStrictEqual(data, Buffer.concat([buf1, buf2]));
+      assert.ok(!isBinary);
+      done();
+    });
+
+    perMessageDeflate.compress(buf1, false, (err, fragment1) => {
+      if (err) return done(err);
+
+      receiver.write(Buffer.from([0x41, fragment1.length]));
+      receiver.write(fragment1);
+
+      perMessageDeflate.compress(buf2, true, (err, fragment2) => {
+        if (err) return done(err);
+
+        receiver.write(Buffer.from([0x80, fragment2.length]));
+        receiver.write(fragment2);
+      });
+    });
+  });
+
+  it('parses a buffer with thousands of frames', (done) => {
+    const buf = Buffer.allocUnsafe(40000);
+
+    for (let i = 0; i < buf.length; i += 2) {
+      buf[i] = 0x81;
+      buf[i + 1] = 0x00;
+    }
+
+    const receiver = new Receiver();
+    let counter = 0;
+
+    receiver.on('message', (data, isBinary) => {
+      assert.strictEqual(data, EMPTY_BUFFER);
+      assert.ok(!isBinary);
+      if (++counter === 20000) done();
+    });
+
+    receiver.write(buf);
+  });
+
+  it('resets `totalPayloadLength` only on final frame (unfragmented)', (done) => {
+    const receiver = new Receiver({ maxPayload: 10 });
+
+    receiver.on('message', (data, isBinary) => {
+      assert.strictEqual(receiver._totalPayloadLength, 0);
+      assert.deepStrictEqual(data, Buffer.from('Hello'));
+      assert.ok(!isBinary);
+      done();
+    });
+
+    assert.strictEqual(receiver._totalPayloadLength, 0);
+    receiver.write(Buffer.from('810548656c6c6f', 'hex'));
+  });
+
+  it('resets `totalPayloadLength` only on final frame (fragmented)', (done) => {
+    const receiver = new Receiver({ maxPayload: 10 });
+
+    receiver.on('message', (data, isBinary) => {
+      assert.strictEqual(receiver._totalPayloadLength, 0);
+      assert.deepStrictEqual(data, Buffer.from('Hello'));
+      assert.ok(!isBinary);
+      done();
+    });
+
+    assert.strictEqual(receiver._totalPayloadLength, 0);
+    receiver.write(Buffer.from('01024865', 'hex'));
+    assert.strictEqual(receiver._totalPayloadLength, 2);
+    receiver.write(Buffer.from('80036c6c6f', 'hex'));
+  });
+
+  it('resets `totalPayloadLength` only on final frame (fragmented + ping)', (done) => {
+    const receiver = new Receiver({ maxPayload: 10 });
+    let data;
+
+    receiver.on('ping', (buf) => {
+      assert.strictEqual(receiver._totalPayloadLength, 2);
+      data = buf;
+    });
+    receiver.on('message', (buf, isBinary) => {
+      assert.strictEqual(receiver._totalPayloadLength, 0);
+      assert.deepStrictEqual(data, EMPTY_BUFFER);
+      assert.deepStrictEqual(buf, Buffer.from('Hello'));
+      assert.ok(isBinary);
+      done();
+    });
+
+    assert.strictEqual(receiver._totalPayloadLength, 0);
+    receiver.write(Buffer.from('02024865', 'hex'));
+    receiver.write(Buffer.from('8900', 'hex'));
+    receiver.write(Buffer.from('80036c6c6f', 'hex'));
+  });
+
+  it('ignores any data after a close frame', (done) => {
+    const perMessageDeflate = new PerMessageDeflate();
+    perMessageDeflate.accept([{}]);
+
+    const receiver = new Receiver({
+      extensions: {
+        'permessage-deflate': perMessageDeflate
+      }
+    });
+    const results = [];
+    const push = results.push.bind(results);
+
+    receiver.on('conclude', push).on('message', push);
+    receiver.on('finish', () => {
+      assert.deepStrictEqual(results, [
+        EMPTY_BUFFER,
+        false,
+        1005,
+        EMPTY_BUFFER
+      ]);
+      done();
+    });
+
+    receiver.write(Buffer.from([0xc1, 0x01, 0x00]));
+    receiver.write(Buffer.from([0x88, 0x00]));
+    receiver.write(Buffer.from([0x81, 0x00]));
+  });
+
+  it('emits an error if RSV1 is on and permessage-deflate is disabled', (done) => {
+    const receiver = new Receiver();
+
+    receiver.on('error', (err) => {
+      assert.ok(err instanceof RangeError);
+      assert.strictEqual(err.code, 'WS_ERR_UNEXPECTED_RSV_1');
+      assert.strictEqual(
+        err.message,
+        'Invalid WebSocket frame: RSV1 must be clear'
+      );
+      assert.strictEqual(err[kStatusCode], 1002);
+      done();
+    });
+
+    receiver.write(Buffer.from([0xc2, 0x80, 0x00, 0x00, 0x00, 0x00]));
+  });
+
+  it('emits an error if RSV1 is on and opcode is 0', (done) => {
+    const perMessageDeflate = new PerMessageDeflate();
+    perMessageDeflate.accept([{}]);
+
+    const receiver = new Receiver({
+      extensions: {
+        'permessage-deflate': perMessageDeflate
+      }
+    });
+
+    receiver.on('error', (err) => {
+      assert.ok(err instanceof RangeError);
+      assert.strictEqual(err.code, 'WS_ERR_UNEXPECTED_RSV_1');
+      assert.strictEqual(
+        err.message,
+        'Invalid WebSocket frame: RSV1 must be clear'
+      );
+      assert.strictEqual(err[kStatusCode], 1002);
+      done();
+    });
+
+    receiver.write(Buffer.from([0x40, 0x00]));
+  });
+
+  it('emits an error if RSV2 is on', (done) => {
+    const receiver = new Receiver();
+
+    receiver.on('error', (err) => {
+      assert.ok(err instanceof RangeError);
+      assert.strictEqual(err.code, 'WS_ERR_UNEXPECTED_RSV_2_3');
+      assert.strictEqual(
+        err.message,
+        'Invalid WebSocket frame: RSV2 and RSV3 must be clear'
+      );
+      assert.strictEqual(err[kStatusCode], 1002);
+      done();
+    });
+
+    receiver.write(Buffer.from([0xa2, 0x00]));
+  });
+
+  it('emits an error if RSV3 is on', (done) => {
+    const receiver = new Receiver();
+
+    receiver.on('error', (err) => {
+      assert.ok(err instanceof RangeError);
+      assert.strictEqual(err.code, 'WS_ERR_UNEXPECTED_RSV_2_3');
+      assert.strictEqual(
+        err.message,
+        'Invalid WebSocket frame: RSV2 and RSV3 must be clear'
+      );
+      assert.strictEqual(err[kStatusCode], 1002);
+      done();
+    });
+
+    receiver.write(Buffer.from([0x92, 0x00]));
+  });
+
+  it('emits an error if the first frame in a fragmented message has opcode 0', (done) => {
+    const receiver = new Receiver();
+
+    receiver.on('error', (err) => {
+      assert.ok(err instanceof RangeError);
+      assert.strictEqual(err.code, 'WS_ERR_INVALID_OPCODE');
+      assert.strictEqual(
+        err.message,
+        'Invalid WebSocket frame: invalid opcode 0'
+      );
+      assert.strictEqual(err[kStatusCode], 1002);
+      done();
+    });
+
+    receiver.write(Buffer.from([0x00, 0x00]));
+  });
+
+  it('emits an error if a frame has opcode 1 in the middle of a fragmented message', (done) => {
+    const receiver = new Receiver();
+
+    receiver.on('error', (err) => {
+      assert.ok(err instanceof RangeError);
+      assert.strictEqual(err.code, 'WS_ERR_INVALID_OPCODE');
+      assert.strictEqual(
+        err.message,
+        'Invalid WebSocket frame: invalid opcode 1'
+      );
+      assert.strictEqual(err[kStatusCode], 1002);
+      done();
+    });
+
+    receiver.write(Buffer.from([0x01, 0x00]));
+    receiver.write(Buffer.from([0x01, 0x00]));
+  });
+
+  it('emits an error if a frame has opcode 2 in the middle of a fragmented message', (done) => {
+    const receiver = new Receiver();
+
+    receiver.on('error', (err) => {
+      assert.ok(err instanceof RangeError);
+      assert.strictEqual(err.code, 'WS_ERR_INVALID_OPCODE');
+      assert.strictEqual(
+        err.message,
+        'Invalid WebSocket frame: invalid opcode 2'
+      );
+      assert.strictEqual(err[kStatusCode], 1002);
+      done();
+    });
+
+    receiver.write(Buffer.from([0x01, 0x00]));
+    receiver.write(Buffer.from([0x02, 0x00]));
+  });
+
+  it('emits an error if a control frame has the FIN bit off', (done) => {
+    const receiver = new Receiver();
+
+    receiver.on('error', (err) => {
+      assert.ok(err instanceof RangeError);
+      assert.strictEqual(err.code, 'WS_ERR_EXPECTED_FIN');
+      assert.strictEqual(
+        err.message,
+        'Invalid WebSocket frame: FIN must be set'
+      );
+      assert.strictEqual(err[kStatusCode], 1002);
+      done();
+    });
+
+    receiver.write(Buffer.from([0x09, 0x00]));
+  });
+
+  it('emits an error if a control frame has the RSV1 bit on', (done) => {
+    const perMessageDeflate = new PerMessageDeflate();
+    perMessageDeflate.accept([{}]);
+
+    const receiver = new Receiver({
+      extensions: {
+        'permessage-deflate': perMessageDeflate
+      }
+    });
+
+    receiver.on('error', (err) => {
+      assert.ok(err instanceof RangeError);
+      assert.strictEqual(err.code, 'WS_ERR_UNEXPECTED_RSV_1');
+      assert.strictEqual(
+        err.message,
+        'Invalid WebSocket frame: RSV1 must be clear'
+      );
+      assert.strictEqual(err[kStatusCode], 1002);
+      done();
+    });
+
+    receiver.write(Buffer.from([0xc9, 0x00]));
+  });
+
+  it('emits an error if a control frame has the FIN bit off', (done) => {
+    const receiver = new Receiver();
+
+    receiver.on('error', (err) => {
+      assert.ok(err instanceof RangeError);
+      assert.strictEqual(err.code, 'WS_ERR_EXPECTED_FIN');
+      assert.strictEqual(
+        err.message,
+        'Invalid WebSocket frame: FIN must be set'
+      );
+      assert.strictEqual(err[kStatusCode], 1002);
+      done();
+    });
+
+    receiver.write(Buffer.from([0x09, 0x00]));
+  });
+
+  it('emits an error if a frame has the MASK bit off (server mode)', (done) => {
+    const receiver = new Receiver({ isServer: true });
+
+    receiver.on('error', (err) => {
+      assert.ok(err instanceof RangeError);
+      assert.strictEqual(err.code, 'WS_ERR_EXPECTED_MASK');
+      assert.strictEqual(
+        err.message,
+        'Invalid WebSocket frame: MASK must be set'
+      );
+      assert.strictEqual(err[kStatusCode], 1002);
+      done();
+    });
+
+    receiver.write(Buffer.from([0x81, 0x02, 0x68, 0x69]));
+  });
+
+  it('emits an error if a frame has the MASK bit on (client mode)', (done) => {
+    const receiver = new Receiver();
+
+    receiver.on('error', (err) => {
+      assert.ok(err instanceof RangeError);
+      assert.strictEqual(err.code, 'WS_ERR_UNEXPECTED_MASK');
+      assert.strictEqual(
+        err.message,
+        'Invalid WebSocket frame: MASK must be clear'
+      );
+      assert.strictEqual(err[kStatusCode], 1002);
+      done();
+    });
+
+    receiver.write(
+      Buffer.from([0x81, 0x82, 0x56, 0x3a, 0xac, 0x80, 0x3e, 0x53])
+    );
+  });
+
+  it('emits an error if a control frame has a payload bigger than 125 B', (done) => {
+    const receiver = new Receiver();
+
+    receiver.on('error', (err) => {
+      assert.ok(err instanceof RangeError);
+      assert.strictEqual(err.code, 'WS_ERR_INVALID_CONTROL_PAYLOAD_LENGTH');
+      assert.strictEqual(
+        err.message,
+        'Invalid WebSocket frame: invalid payload length 126'
+      );
+      assert.strictEqual(err[kStatusCode], 1002);
+      done();
+    });
+
+    receiver.write(Buffer.from([0x89, 0x7e]));
+  });
+
+  it('emits an error if a data frame has a payload bigger than 2^53 - 1 B', (done) => {
+    const receiver = new Receiver();
+
+    receiver.on('error', (err) => {
+      assert.ok(err instanceof RangeError);
+      assert.strictEqual(err.code, 'WS_ERR_UNSUPPORTED_DATA_PAYLOAD_LENGTH');
+      assert.strictEqual(
+        err.message,
+        'Unsupported WebSocket frame: payload length > 2^53 - 1'
+      );
+      assert.strictEqual(err[kStatusCode], 1009);
+      done();
+    });
+
+    receiver.write(Buffer.from([0x82, 0x7f]));
+    setImmediate(() =>
+      receiver.write(
+        Buffer.from([0x00, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00])
+      )
+    );
+  });
+
+  it('emits an error if a text frame contains invalid UTF-8 data (1/2)', (done) => {
+    const receiver = new Receiver();
+
+    receiver.on('error', (err) => {
+      assert.ok(err instanceof Error);
+      assert.strictEqual(err.code, 'WS_ERR_INVALID_UTF8');
+      assert.strictEqual(
+        err.message,
+        'Invalid WebSocket frame: invalid UTF-8 sequence'
+      );
+      assert.strictEqual(err[kStatusCode], 1007);
+      done();
+    });
+
+    receiver.write(Buffer.from([0x81, 0x04, 0xce, 0xba, 0xe1, 0xbd]));
+  });
+
+  it('emits an error if a text frame contains invalid UTF-8 data (2/2)', (done) => {
+    const perMessageDeflate = new PerMessageDeflate();
+    perMessageDeflate.accept([{}]);
+
+    const receiver = new Receiver({
+      extensions: {
+        'permessage-deflate': perMessageDeflate
+      }
+    });
+    const buf = Buffer.from([0xce, 0xba, 0xe1, 0xbd]);
+
+    receiver.on('error', (err) => {
+      assert.ok(err instanceof Error);
+      assert.strictEqual(err.code, 'WS_ERR_INVALID_UTF8');
+      assert.strictEqual(
+        err.message,
+        'Invalid WebSocket frame: invalid UTF-8 sequence'
+      );
+      assert.strictEqual(err[kStatusCode], 1007);
+      done();
+    });
+
+    perMessageDeflate.compress(buf, true, (err, data) => {
+      if (err) return done(err);
+
+      receiver.write(Buffer.from([0xc1, data.length]));
+      receiver.write(data);
+    });
+  });
+
+  it('emits an error if a close frame has a payload of 1 B', (done) => {
+    const receiver = new Receiver();
+
+    receiver.on('error', (err) => {
+      assert.ok(err instanceof RangeError);
+      assert.strictEqual(err.code, 'WS_ERR_INVALID_CONTROL_PAYLOAD_LENGTH');
+      assert.strictEqual(
+        err.message,
+        'Invalid WebSocket frame: invalid payload length 1'
+      );
+      assert.strictEqual(err[kStatusCode], 1002);
+      done();
+    });
+
+    receiver.write(Buffer.from([0x88, 0x01, 0x00]));
+  });
+
+  it('emits an error if a close frame contains an invalid close code', (done) => {
+    const receiver = new Receiver();
+
+    receiver.on('error', (err) => {
+      assert.ok(err instanceof RangeError);
+      assert.strictEqual(err.code, 'WS_ERR_INVALID_CLOSE_CODE');
+      assert.strictEqual(
+        err.message,
+        'Invalid WebSocket frame: invalid status code 0'
+      );
+      assert.strictEqual(err[kStatusCode], 1002);
+      done();
+    });
+
+    receiver.write(Buffer.from([0x88, 0x02, 0x00, 0x00]));
+  });
+
+  it('emits an error if a close frame contains invalid UTF-8 data', (done) => {
+    const receiver = new Receiver();
+
+    receiver.on('error', (err) => {
+      assert.ok(err instanceof Error);
+      assert.strictEqual(err.code, 'WS_ERR_INVALID_UTF8');
+      assert.strictEqual(
+        err.message,
+        'Invalid WebSocket frame: invalid UTF-8 sequence'
+      );
+      assert.strictEqual(err[kStatusCode], 1007);
+      done();
+    });
+
+    receiver.write(
+      Buffer.from([0x88, 0x06, 0x03, 0xef, 0xce, 0xba, 0xe1, 0xbd])
+    );
+  });
+
+  it('emits an error if a frame payload length is bigger than `maxPayload`', (done) => {
+    const receiver = new Receiver({ isServer: true, maxPayload: 20 * 1024 });
+    const msg = crypto.randomBytes(200 * 1024);
+
+    const list = Sender.frame(msg, {
+      fin: true,
+      rsv1: false,
+      opcode: 0x02,
+      mask: true,
+      readOnly: true
+    });
+
+    const frame = Buffer.concat(list);
+
+    receiver.on('error', (err) => {
+      assert.ok(err instanceof RangeError);
+      assert.strictEqual(err.code, 'WS_ERR_UNSUPPORTED_MESSAGE_LENGTH');
+      assert.strictEqual(err.message, 'Max payload size exceeded');
+      assert.strictEqual(err[kStatusCode], 1009);
+      done();
+    });
+
+    receiver.write(frame);
+  });
+
+  it('emits an error if the message length exceeds `maxPayload`', (done) => {
+    const perMessageDeflate = new PerMessageDeflate({}, false, 25);
+    perMessageDeflate.accept([{}]);
+
+    const receiver = new Receiver({
+      extensions: { 'permessage-deflate': perMessageDeflate },
+      isServer: false,
+      maxPayload: 25
+    });
+    const buf = Buffer.from('A'.repeat(50));
+
+    receiver.on('error', (err) => {
+      assert.ok(err instanceof RangeError);
+      assert.strictEqual(err.code, 'WS_ERR_UNSUPPORTED_MESSAGE_LENGTH');
+      assert.strictEqual(err.message, 'Max payload size exceeded');
+      assert.strictEqual(err[kStatusCode], 1009);
+      done();
+    });
+
+    perMessageDeflate.compress(buf, true, (err, data) => {
+      if (err) return done(err);
+
+      receiver.write(Buffer.from([0xc1, data.length]));
+      receiver.write(data);
+    });
+  });
+
+  it('emits an error if the sum of fragment lengths exceeds `maxPayload`', (done) => {
+    const perMessageDeflate = new PerMessageDeflate({}, false, 25);
+    perMessageDeflate.accept([{}]);
+
+    const receiver = new Receiver({
+      extensions: { 'permessage-deflate': perMessageDeflate },
+      isServer: false,
+      maxPayload: 25
+    });
+    const buf = Buffer.from('A'.repeat(15));
+
+    receiver.on('error', (err) => {
+      assert.ok(err instanceof RangeError);
+      assert.strictEqual(err.code, 'WS_ERR_UNSUPPORTED_MESSAGE_LENGTH');
+      assert.strictEqual(err.message, 'Max payload size exceeded');
+      assert.strictEqual(err[kStatusCode], 1009);
+      done();
+    });
+
+    perMessageDeflate.compress(buf, false, (err, fragment1) => {
+      if (err) return done(err);
+
+      receiver.write(Buffer.from([0x41, fragment1.length]));
+      receiver.write(fragment1);
+
+      perMessageDeflate.compress(buf, true, (err, fragment2) => {
+        if (err) return done(err);
+
+        receiver.write(Buffer.from([0x80, fragment2.length]));
+        receiver.write(fragment2);
+      });
+    });
+  });
+
+  it("honors the 'nodebuffer' binary type", (done) => {
+    const receiver = new Receiver();
+    const frags = [
+      crypto.randomBytes(7321),
+      crypto.randomBytes(137),
+      crypto.randomBytes(285787),
+      crypto.randomBytes(3)
+    ];
+
+    receiver.on('message', (data, isBinary) => {
+      assert.deepStrictEqual(data, Buffer.concat(frags));
+      assert.ok(isBinary);
+      done();
+    });
+
+    frags.forEach((frag, i) => {
+      Sender.frame(frag, {
+        fin: i === frags.length - 1,
+        opcode: i === 0 ? 2 : 0,
+        readOnly: true,
+        mask: false,
+        rsv1: false
+      }).forEach((buf) => receiver.write(buf));
+    });
+  });
+
+  it("honors the 'arraybuffer' binary type", (done) => {
+    const receiver = new Receiver({ binaryType: 'arraybuffer' });
+    const frags = [
+      crypto.randomBytes(19221),
+      crypto.randomBytes(954),
+      crypto.randomBytes(623987)
+    ];
+
+    receiver.on('message', (data, isBinary) => {
+      assert.ok(data instanceof ArrayBuffer);
+      assert.deepStrictEqual(Buffer.from(data), Buffer.concat(frags));
+      assert.ok(isBinary);
+      done();
+    });
+
+    frags.forEach((frag, i) => {
+      Sender.frame(frag, {
+        fin: i === frags.length - 1,
+        opcode: i === 0 ? 2 : 0,
+        readOnly: true,
+        mask: false,
+        rsv1: false
+      }).forEach((buf) => receiver.write(buf));
+    });
+  });
+
+  it("honors the 'fragments' binary type", (done) => {
+    const receiver = new Receiver({ binaryType: 'fragments' });
+    const frags = [
+      crypto.randomBytes(17),
+      crypto.randomBytes(419872),
+      crypto.randomBytes(83),
+      crypto.randomBytes(9928),
+      crypto.randomBytes(1)
+    ];
+
+    receiver.on('message', (data, isBinary) => {
+      assert.deepStrictEqual(data, frags);
+      assert.ok(isBinary);
+      done();
+    });
+
+    frags.forEach((frag, i) => {
+      Sender.frame(frag, {
+        fin: i === frags.length - 1,
+        opcode: i === 0 ? 2 : 0,
+        readOnly: true,
+        mask: false,
+        rsv1: false
+      }).forEach((buf) => receiver.write(buf));
+    });
+  });
+
+  it('honors the `skipUTF8Validation` option (1/2)', (done) => {
+    const receiver = new Receiver({ skipUTF8Validation: true });
+
+    receiver.on('message', (data, isBinary) => {
+      assert.deepStrictEqual(data, Buffer.from([0xf8]));
+      assert.ok(!isBinary);
+      done();
+    });
+
+    receiver.write(Buffer.from([0x81, 0x01, 0xf8]));
+  });
+
+  it('honors the `skipUTF8Validation` option (2/2)', (done) => {
+    const receiver = new Receiver({ skipUTF8Validation: true });
+
+    receiver.on('conclude', (code, data) => {
+      assert.strictEqual(code, 1000);
+      assert.deepStrictEqual(data, Buffer.from([0xf8]));
+      done();
+    });
+
+    receiver.write(Buffer.from([0x88, 0x03, 0x03, 0xe8, 0xf8]));
+  });
+});