// Decode a 12-byte text frame and a 15 byte text frame written in one go (one network packet)
private void sizeLimitDecodeDoubleTextFrame(int maxSize) throws Exception {
ProtocolCodecSessionEx session = new ProtocolCodecSessionEx();
IoBufferAllocatorEx<?> allocator = session.getBufferAllocator();
ProtocolDecoder decoder = new WsFrameDecoder(allocator, maxSize);
IoBufferEx in =
allocator
.wrap(allocator.allocate(12 + 2 + 15 + 2))
.put((byte) 0x81)
.put((byte) 12)
.putString("123456789012", UTF_8.newEncoder())
.put((byte) 0x81)
.put((byte) 15)
.putString("123456789012345", UTF_8.newEncoder())
.flip();
decoder.decode(session, (IoBuffer) in, session.getDecoderOutput());
WsMessage out = (WsMessage) session.getDecoderOutputQueue().poll();
assertEquals(
new WsTextMessage(allocator.wrap(ByteBuffer.wrap("123456789012".getBytes(UTF_8)))), out);
WsMessage out2 = (WsMessage) session.getDecoderOutputQueue().poll();
assertEquals(
new WsTextMessage(allocator.wrap(ByteBuffer.wrap("123456789012345".getBytes(UTF_8)))),
out2);
assertTrue(session.getDecoderOutputQueue().isEmpty());
decoder.finishDecode(session, session.getDecoderOutput());
assertTrue(session.getDecoderOutputQueue().isEmpty());
assertFalse(in.hasRemaining());
}
@Test
public void decodeTextContinuationFrame() throws Exception {
ProtocolCodecSessionEx session = new ProtocolCodecSessionEx();
IoBufferAllocatorEx<?> allocator = session.getBufferAllocator();
ProtocolDecoder decoder = new WsFrameDecoder(allocator, 200);
int firstPayload = 125;
String first = createString('a', firstPayload);
int secondPayload = 2;
String second = createString('b', secondPayload);
int thirdPayload = 4;
String thrid = createString('c', thirdPayload);
IoBufferEx in =
allocator
.wrap(allocator.allocate(firstPayload + secondPayload + thirdPayload + 6))
// text frame
.put((byte) 0x01)
.put((byte) firstPayload)
.putString(first, UTF_8.newEncoder())
// continuation frame with FIN
.put((byte) 0x80)
.put((byte) secondPayload)
.putString(second, UTF_8.newEncoder())
// text frame with FIN
.put((byte) 0x81)
.put((byte) thirdPayload)
.putString(thrid, UTF_8.newEncoder())
.flip();
decoder.decode(session, (IoBuffer) in, session.getDecoderOutput());
WsMessage out1 = (WsMessage) session.getDecoderOutputQueue().poll();
assertEquals(
new WsTextMessage(allocator.wrap(ByteBuffer.wrap(first.getBytes(UTF_8))), false), out1);
WsMessage out2 = (WsMessage) session.getDecoderOutputQueue().poll();
assertEquals(
new WsContinuationMessage(allocator.wrap(ByteBuffer.wrap(second.getBytes(UTF_8)))), out2);
WsMessage out3 = (WsMessage) session.getDecoderOutputQueue().poll();
assertEquals(new WsTextMessage(allocator.wrap(ByteBuffer.wrap(thrid.getBytes(UTF_8)))), out3);
assertTrue(session.getDecoderOutputQueue().isEmpty());
decoder.finishDecode(session, session.getDecoderOutput());
assertTrue(session.getDecoderOutputQueue().isEmpty());
assertFalse(in.hasRemaining());
}
// Decode a 200-byte binary frame
private void sizeLimitDecodeBinaryFrame(int maxSize) throws Exception {
ProtocolCodecSessionEx session = new ProtocolCodecSessionEx();
IoBufferAllocatorEx<?> allocator = session.getBufferAllocator();
ProtocolDecoder decoder = new WsFrameDecoder(allocator, maxSize);
IoBufferEx in =
allocator
.wrap(allocator.allocate(204))
.put((byte) 0x82)
.put((byte) 126)
.put((byte) 0x00)
.put((byte) 0xC8)
.fill(200)
.flip();
decoder.decode(session, (IoBuffer) in, session.getDecoderOutput());
WsMessage out = (WsMessage) session.getDecoderOutputQueue().poll();
assertEquals(
new WsBinaryMessage(allocator.wrap(allocator.allocate(200)).fill(200).flip()), out);
assertTrue(session.getDecoderOutputQueue().isEmpty());
decoder.finishDecode(session, session.getDecoderOutput());
assertTrue(session.getDecoderOutputQueue().isEmpty());
assertFalse(in.hasRemaining());
}
@Test
public void decodeTextFrame() throws Exception {
ProtocolCodecSessionEx session = new ProtocolCodecSessionEx();
IoBufferAllocatorEx<?> allocator = session.getBufferAllocator();
ProtocolDecoder decoder = new WsFrameDecoder(allocator, 0);
IoBufferEx in =
allocator
.wrap(allocator.allocate(14))
.put((byte) 0x81)
.put((byte) 0x0C)
.putString("Hello, world", UTF_8.newEncoder())
.flip();
decoder.decode(session, (IoBuffer) in, session.getDecoderOutput());
WsMessage out = (WsMessage) session.getDecoderOutputQueue().poll();
assertEquals(
new WsTextMessage(allocator.wrap(ByteBuffer.wrap("Hello, world".getBytes(UTF_8)))), out);
assertTrue(session.getDecoderOutputQueue().isEmpty());
decoder.finishDecode(session, session.getDecoderOutput());
assertTrue(session.getDecoderOutputQueue().isEmpty());
assertFalse(in.hasRemaining());
}
@Test
public void decodeZeroLengthMaskedPongFrame() throws Exception {
ProtocolCodecSessionEx session = new ProtocolCodecSessionEx();
IoBufferAllocatorEx<?> allocator = session.getBufferAllocator();
ProtocolDecoder decoder = new WsFrameDecoder(allocator, 0);
IoBufferEx in =
allocator
.wrap(allocator.allocate(6))
.put((byte) 0x8A)
.put((byte) 0x80)
.fill(4) // mask
.flip();
decoder.decode(session, (IoBuffer) in, session.getDecoderOutput());
WsMessage out = (WsMessage) session.getDecoderOutputQueue().poll();
assertEquals(new WsPongMessage(allocator.wrap(allocator.allocate(0)).flip()), out);
assertTrue(session.getDecoderOutputQueue().isEmpty());
decoder.finishDecode(session, session.getDecoderOutput());
assertTrue(session.getDecoderOutputQueue().isEmpty());
assertFalse(in.hasRemaining());
}
@Test
public void decodeBinaryContinuationFrame() throws Exception {
ProtocolCodecSessionEx session = new ProtocolCodecSessionEx();
IoBufferAllocatorEx<?> allocator = session.getBufferAllocator();
ProtocolDecoder decoder = new WsFrameDecoder(allocator, 200);
int firstPayload = 125;
byte[] first = createString('a', firstPayload).getBytes("UTF-8");
int secondPayload = 2;
byte[] second = createString('b', secondPayload).getBytes("UTF-8");
int thirdPayload = 4;
byte[] thrid = createString('c', thirdPayload).getBytes("UTF-8");
IoBufferEx in =
allocator
.wrap(allocator.allocate(firstPayload + secondPayload + thirdPayload + 6))
// binary frame
.put((byte) 0x02)
.put((byte) firstPayload)
.put(first)
// continuation frame with FIN
.put((byte) 0x80)
.put((byte) secondPayload)
.put(second)
// binary frame with FIN
.put((byte) 0x82)
.put((byte) thirdPayload)
.put(thrid)
.flip();
decoder.decode(session, (IoBuffer) in, session.getDecoderOutput());
WsMessage out1 = (WsMessage) session.getDecoderOutputQueue().poll();
assertEquals(new WsBinaryMessage(allocator.wrap(ByteBuffer.wrap(first)), false), out1);
WsMessage out2 = (WsMessage) session.getDecoderOutputQueue().poll();
assertEquals(new WsContinuationMessage(allocator.wrap(ByteBuffer.wrap(second))), out2);
WsMessage out3 = (WsMessage) session.getDecoderOutputQueue().poll();
assertEquals(new WsBinaryMessage(allocator.wrap(ByteBuffer.wrap(thrid))), out3);
assertTrue(session.getDecoderOutputQueue().isEmpty());
decoder.finishDecode(session, session.getDecoderOutput());
assertTrue(session.getDecoderOutputQueue().isEmpty());
assertFalse(in.hasRemaining());
}
// Make sure we fail early for case of large text messages: we should fail as soon as we process
// a network packet that exceeds the limit (first packet in this case)
@Test(expected = ProtocolDecoderException.class)
public void sizeLimitDecodeTextFrameFailEarly1() throws Exception {
ProtocolCodecSessionEx session = new ProtocolCodecSessionEx();
IoBufferAllocatorEx<?> allocator = session.getBufferAllocator();
ProtocolDecoder decoder = new WsFrameDecoder(allocator, 20);
int dataSize = 30;
StringBuilder data = new StringBuilder(dataSize);
for (int i = 0; i < (dataSize); i++) {
data.append((i % 10));
}
IoBufferEx in =
allocator
.wrap(allocator.allocate(dataSize + 2))
.put((byte) 0x81)
.put((byte) 30)
.putString(data.toString(), UTF_8.newEncoder())
.flip();
// As soon as we sent part of a message that exceeds the limit it should throw the exception
decoder.decode(session, (IoBuffer) in, session.getDecoderOutput());
}
@Test
public void testMaxMessageSize() throws Exception {
ProtocolCodecSessionEx session = new ProtocolCodecSessionEx();
IoBufferAllocatorEx<?> allocator = session.getBufferAllocator();
try {
IoBuffer in = (IoBuffer) getMaxMessageSizeBuffer(allocator);
ProtocolDecoder decoder = new WsFrameDecoder(allocator, 253);
decoder.decode(session, in, session.getDecoderOutput());
fail("Expected throw exception as the message size > 253");
} catch (ProtocolDecoderException e) {
// expected exception as message size exceeds 255
}
IoBuffer in = (IoBuffer) getMaxMessageSizeBuffer(allocator);
ProtocolDecoder decoder = new WsFrameDecoder(allocator, 254);
decoder.decode(session, in, session.getDecoderOutput());
in = (IoBuffer) getMaxMessageSizeBuffer(allocator);
decoder = new WsFrameDecoder(allocator, 255);
decoder.decode(session, in, session.getDecoderOutput());
}
// Make sure we fail early for case of large text messages: we should fail as soon as we process
// a network packet that exceeds the limit (2nd packet in this case)
@Test(expected = ProtocolDecoderException.class)
public void sizeLimitDecodeTextFrameFailEarly2() throws Exception {
ProtocolCodecSessionEx session = new ProtocolCodecSessionEx();
IoBufferAllocatorEx<?> allocator = session.getBufferAllocator();
ProtocolDecoder decoder = new WsFrameDecoder(allocator, 20);
int dataSize = 30;
StringBuilder data = new StringBuilder(dataSize);
for (int i = 0; i < (dataSize); i++) {
data.append((i % 10));
}
IoBufferEx in =
allocator
.wrap(allocator.allocate(dataSize + 2))
.put((byte) 0x81)
.put((byte) 30)
.putString(data.toString(), UTF_8.newEncoder())
.flip();
decoder.decode(session, (IoBuffer) in.getSlice(10), session.getDecoderOutput());
// Now if we send the next 12 bytes that should exceed the limit (first byte is control byte,
// doesn't count)
decoder.decode(session, (IoBuffer) in.getSlice(12), session.getDecoderOutput());
}
@Test(expected = ProtocolDecoderException.class)
public void decodeFragmentedContinuationFrameExceedingMaxMessageSize() throws Exception {
ProtocolCodecSessionEx session = new ProtocolCodecSessionEx();
IoBufferAllocatorEx<?> allocator = session.getBufferAllocator();
ProtocolDecoder decoder = new WsFrameDecoder(allocator, 150);
String textFramePayload = createString('a', 100);
IoBufferEx textFrameBuffer =
allocator
.wrap(allocator.allocate(102))
// text frame
.put((byte) 0x01)
.put((byte) 100)
.putString(textFramePayload, UTF_8.newEncoder())
.flip();
// the decoder should fail fast when message size exceeds the max message size without waiting
// for
// payload
IoBufferEx continuationFrameBuffer =
allocator
.wrap(allocator.allocate(2))
// continuation frame fragment (opcode and payload length)
.put((byte) 0x80)
.put((byte) 0x64)
.flip();
decoder.decode(session, (IoBuffer) textFrameBuffer, session.getDecoderOutput());
// since the maximum message size is 150, the following statement will
// cause the message size(200) to exceed maximum message size
// The decoder should fail fast once the payload length is decoded regardless of the
// availability of payload
decoder.decode(session, (IoBuffer) continuationFrameBuffer, session.getDecoderOutput());
}
@Test
public void decodeTextContinuationFrameWithFragmentedPayload() throws Exception {
ProtocolCodecSessionEx session = new ProtocolCodecSessionEx();
IoBufferAllocatorEx<?> allocator = session.getBufferAllocator();
ProtocolDecoder decoder = new WsFrameDecoder(allocator, 250);
String textFramePayload = createString('a', 100);
String continuationFramePayloadFirstFragment = createString('b', 50);
String continuationFramePayloadSecondFragment = createString('b', 50);
IoBufferEx in =
allocator
.wrap(allocator.allocate(102))
// text frame
.put((byte) 0x01)
.put((byte) 100)
.putString(textFramePayload, UTF_8.newEncoder())
.flip();
IoBufferEx[] array =
new IoBufferEx[] {
allocator
.wrap(allocator.allocate(2))
// continuation frame fragment (opcode and payload length)
.put((byte) 0x80)
.put((byte) 0x64)
.flip(),
allocator
.wrap(allocator.allocate(50))
// continuation frame payload first fragment
.putString(continuationFramePayloadFirstFragment, UTF_8.newEncoder())
.flip(),
allocator
.wrap(allocator.allocate(50))
// continuation frame payload second fragment
.putString(continuationFramePayloadSecondFragment, UTF_8.newEncoder())
.flip()
};
decoder.decode(session, (IoBuffer) in, session.getDecoderOutput());
for (IoBufferEx buffer : array) {
decoder.decode(session, (IoBuffer) buffer, session.getDecoderOutput());
}
WsMessage out1 = (WsMessage) session.getDecoderOutputQueue().poll();
assertEquals(
new WsTextMessage(allocator.wrap(ByteBuffer.wrap(textFramePayload.getBytes(UTF_8))), false),
out1);
WsMessage out2 = (WsMessage) session.getDecoderOutputQueue().poll();
assertEquals(
new WsContinuationMessage(
allocator.wrap(ByteBuffer.wrap(createString('b', 100).getBytes(UTF_8)))),
out2);
}
@Test
public void decodeFragmentedBinaryFrame() throws Exception {
ProtocolCodecSessionEx session = new ProtocolCodecSessionEx();
IoBufferAllocatorEx<?> allocator = session.getBufferAllocator();
ProtocolDecoder decoder = new WsFrameDecoder(allocator, 0);
IoBufferEx[] array =
new IoBufferEx[] {
allocator
.wrap(allocator.allocate(104))
.put((byte) 0x82)
.put((byte) 126)
.put((byte) 0x00)
.put((byte) 0xC8)
.fill(100)
.flip(),
allocator
.wrap(allocator.allocate(102))
.fill(100)
.put((byte) 0x82)
.put((byte) 0x00)
.flip(),
};
for (IoBufferEx in : array) {
decoder.decode(session, (IoBuffer) in, session.getDecoderOutput());
}
WsMessage fragmented = (WsMessage) session.getDecoderOutputQueue().poll();
assertEquals(
new WsBinaryMessage(allocator.wrap(allocator.allocate(200)).fill(200).flip()), fragmented);
WsMessage empty = (WsMessage) session.getDecoderOutputQueue().poll();
assertEquals(new WsBinaryMessage(allocator.wrap(allocator.allocate(0))), empty);
assertTrue(session.getDecoderOutputQueue().isEmpty());
decoder.finishDecode(session, session.getDecoderOutput());
assertTrue(session.getDecoderOutputQueue().isEmpty());
for (IoBufferEx in : array) {
assertFalse(in.hasRemaining());
}
}
@Test
public void decodeFragmentedTextFrame() throws Exception {
ProtocolCodecSessionEx session = new ProtocolCodecSessionEx();
IoBufferAllocatorEx<?> allocator = session.getBufferAllocator();
ProtocolDecoder decoder = new WsFrameDecoder(allocator, 0);
IoBufferEx[] array =
new IoBufferEx[] {
allocator
.wrap(allocator.allocate(103))
.put((byte) 0x81)
.put((byte) 0x0C)
.putString("Hello", UTF_8.newEncoder())
.flip(),
allocator
.wrap(allocator.allocate(102))
.putString(", world", UTF_8.newEncoder())
.put((byte) 0x81)
.put((byte) 0x00)
.flip(),
};
for (IoBufferEx in : array) {
decoder.decode(session, (IoBuffer) in, session.getDecoderOutput());
}
WsMessage fragmented = (WsMessage) session.getDecoderOutputQueue().poll();
assertEquals(
new WsTextMessage(allocator.wrap(ByteBuffer.wrap("Hello, world".getBytes(UTF_8)))),
fragmented);
WsMessage empty = (WsMessage) session.getDecoderOutputQueue().poll();
assertEquals(new WsTextMessage(allocator.wrap(allocator.allocate(0))), empty);
assertTrue(session.getDecoderOutputQueue().isEmpty());
decoder.finishDecode(session, session.getDecoderOutput());
assertTrue(session.getDecoderOutputQueue().isEmpty());
for (IoBufferEx in : array) {
assertFalse(in.hasRemaining());
}
}
@Test
public void decodeBinaryContinuationFrameWithFragmentedPayload() throws Exception {
ProtocolCodecSessionEx session = new ProtocolCodecSessionEx();
IoBufferAllocatorEx<?> allocator = session.getBufferAllocator();
ProtocolDecoder decoder = new WsFrameDecoder(allocator, 250);
byte[] binaryFramePayload = createString('a', 100).getBytes();
byte[] continuationFramePayload = createString('b', 100).getBytes();
IoBufferEx in =
allocator
.wrap(allocator.allocate(102))
// binary frame
.put((byte) 0x02)
.put((byte) 100)
.put(binaryFramePayload)
.flip();
IoBufferEx[] array =
new IoBufferEx[] {
allocator
.wrap(allocator.allocate(2))
// continuation frame fragment (opcode and payload length)
.put((byte) 0x80)
.put((byte) 0x64)
.flip(),
allocator
.wrap(allocator.allocate(50))
// continuation frame first fragment
.put(continuationFramePayload, 0, 50)
.flip(),
allocator
.wrap(allocator.allocate(50))
// continuation frame second fragment
.put(continuationFramePayload, 50, 50)
.flip()
};
decoder.decode(session, (IoBuffer) in, session.getDecoderOutput());
for (IoBufferEx buffer : array) {
decoder.decode(session, (IoBuffer) buffer, session.getDecoderOutput());
}
WsMessage out1 = (WsMessage) session.getDecoderOutputQueue().poll();
assertEquals(
new WsBinaryMessage(allocator.wrap(ByteBuffer.wrap(binaryFramePayload)), false), out1);
WsMessage out2 = (WsMessage) session.getDecoderOutputQueue().poll();
assertEquals(
new WsContinuationMessage(allocator.wrap(ByteBuffer.wrap(continuationFramePayload))), out2);
}
@Test
public void pingInBinaryContinuationSequence() throws Exception {
ProtocolCodecSessionEx session = new ProtocolCodecSessionEx();
IoBufferAllocatorEx<?> allocator = session.getBufferAllocator();
ProtocolDecoder decoder = new WsFrameDecoder(allocator, 400);
int firstPayload = 125;
byte[] first = createString('a', firstPayload).getBytes("UTF-8");
int secondPayload = 125;
byte[] second = createString('b', secondPayload).getBytes("UTF-8");
int thirdPayload = 4;
byte[] third = createString('c', thirdPayload).getBytes("UTF-8");
int fourthPayload = 6;
String fourth = createString('d', fourthPayload);
IoBufferEx in =
allocator
.wrap(
allocator.allocate(
firstPayload + secondPayload + 2 + thirdPayload + fourthPayload + 8))
// text frame
.put((byte) 0x01)
.put((byte) firstPayload)
.put(first)
// continuation frame
.put((byte) 0x00)
.put((byte) secondPayload)
.put(second)
// ping frame
.put((byte) 0x89)
.put((byte) 0x00)
// continuation frame with FIN
.put((byte) 0x80)
.put((byte) thirdPayload)
.put(third)
// binary frame
.put((byte) 0x82)
.put((byte) fourthPayload)
.putString(fourth, UTF_8.newEncoder())
.flip();
decoder.decode(session, (IoBuffer) in, session.getDecoderOutput());
WsMessage out1 = (WsMessage) session.getDecoderOutputQueue().poll();
assertEquals(new WsTextMessage(allocator.wrap(ByteBuffer.wrap(first)), false), out1);
WsMessage out2 = (WsMessage) session.getDecoderOutputQueue().poll();
assertEquals(new WsContinuationMessage(allocator.wrap(ByteBuffer.wrap(second)), false), out2);
WsMessage out = (WsMessage) session.getDecoderOutputQueue().poll();
assertEquals(new WsPingMessage(allocator.wrap(allocator.allocate(0))), out);
WsMessage out3 = (WsMessage) session.getDecoderOutputQueue().poll();
assertEquals(new WsContinuationMessage(allocator.wrap(ByteBuffer.wrap(third))), out3);
WsMessage out4 = (WsMessage) session.getDecoderOutputQueue().poll();
assertEquals(
new WsBinaryMessage(allocator.wrap(ByteBuffer.wrap(fourth.getBytes(UTF_8)))), out4);
assertTrue(session.getDecoderOutputQueue().isEmpty());
decoder.finishDecode(session, session.getDecoderOutput());
assertTrue(session.getDecoderOutputQueue().isEmpty());
assertFalse(in.hasRemaining());
}