@OnWebSocketFrame
public void onWebSocketFrame(Frame frame) {
if (OpCode.PONG == frame.getOpCode()) {
ByteBuffer payload = frame.getPayload() != null ? frame.getPayload() : EMPTY_PAYLOAD;
PongMessage message = new PongMessage(payload);
try {
this.webSocketHandler.handleMessage(this.wsSession, message);
} catch (Throwable t) {
ExceptionWebSocketHandlerDecorator.tryCloseWithError(this.wsSession, t, logger);
}
}
}
@Override
public void incomingFrame(Frame frame) {
// Incoming frames are always non concurrent because
// they are read and parsed with a single thread, and
// therefore there is no need for synchronization.
// This extension requires the RSV1 bit set only in the first frame.
// Subsequent continuation frames don't have RSV1 set, but are compressed.
if (frame.getType().isData()) incomingCompressed = frame.isRsv1();
if (OpCode.isControlFrame(frame.getOpCode()) || !frame.hasPayload() || !incomingCompressed) {
nextIncomingFrame(frame);
return;
}
boolean appendTail = frame.isFin();
ByteBuffer payload = frame.getPayload();
int remaining = payload.remaining();
byte[] input = new byte[remaining + (appendTail ? TAIL_BYTES.length : 0)];
payload.get(input, 0, remaining);
if (appendTail) System.arraycopy(TAIL_BYTES, 0, input, remaining, TAIL_BYTES.length);
forwardIncoming(frame, decompress(input));
if (frame.isFin()) incomingCompressed = false;
}
@Override
public void outgoingFrame(Frame frame, WriteCallback callback, BatchMode batchMode) {
ByteBuffer payload = frame.getPayload();
int length = payload != null ? payload.remaining() : 0;
if (OpCode.isControlFrame(frame.getOpCode()) || maxLength <= 0 || length <= maxLength) {
nextOutgoingFrame(frame, callback, batchMode);
return;
}
FrameEntry entry = new FrameEntry(frame, callback, batchMode);
if (LOG.isDebugEnabled()) LOG.debug("Queuing {}", entry);
entries.offer(entry);
flusher.iterate();
}
private void fragment(FrameEntry entry, boolean first) {
Frame frame = entry.frame;
ByteBuffer payload = frame.getPayload();
int remaining = payload.remaining();
int length = Math.min(remaining, maxLength);
finished = length == remaining;
boolean continuation = frame.getType().isContinuation() || !first;
DataFrame fragment = new DataFrame(frame, continuation);
boolean fin = frame.isFin() && finished;
fragment.setFin(fin);
int limit = payload.limit();
int newLimit = payload.position() + length;
payload.limit(newLimit);
ByteBuffer payloadFragment = payload.slice();
payload.limit(limit);
fragment.setPayload(payloadFragment);
if (LOG.isDebugEnabled()) LOG.debug("Fragmented {}->{}", frame, fragment);
payload.position(newLimit);
nextOutgoingFrame(fragment, this, entry.batchMode);
}
@Override
public void incomingFrame(Frame frame) {
if (LOG.isDebugEnabled()) {
LOG.debug("{}.onFrame({})", websocket.getClass().getSimpleName(), frame);
}
try {
onFrame(frame);
byte opcode = frame.getOpCode();
switch (opcode) {
case OpCode.CLOSE:
{
boolean validate = true;
CloseFrame closeframe = (CloseFrame) frame;
CloseInfo close = new CloseInfo(closeframe, validate);
// notify user websocket pojo
onClose(close);
// process handshake
session.getConnection().getIOState().onCloseRemote(close);
return;
}
case OpCode.PING:
{
if (LOG.isDebugEnabled()) {
LOG.debug("PING: {}", BufferUtil.toDetailString(frame.getPayload()));
}
ByteBuffer pongBuf;
if (frame.hasPayload()) {
pongBuf = ByteBuffer.allocate(frame.getPayload().remaining());
BufferUtil.put(frame.getPayload().slice(), pongBuf);
BufferUtil.flipToFlush(pongBuf, 0);
} else {
pongBuf = ByteBuffer.allocate(0);
}
onPing(frame.getPayload());
session.getRemote().sendPong(pongBuf);
break;
}
case OpCode.PONG:
{
if (LOG.isDebugEnabled()) {
LOG.debug("PONG: {}", BufferUtil.toDetailString(frame.getPayload()));
}
onPong(frame.getPayload());
break;
}
case OpCode.BINARY:
{
onBinaryFrame(frame.getPayload(), frame.isFin());
return;
}
case OpCode.TEXT:
{
onTextFrame(frame.getPayload(), frame.isFin());
return;
}
case OpCode.CONTINUATION:
{
onContinuationFrame(frame.getPayload(), frame.isFin());
return;
}
default:
{
LOG.debug("Unhandled OpCode: {}", opcode);
}
}
} catch (NotUtf8Exception e) {
terminateConnection(StatusCode.BAD_PAYLOAD, e.getMessage());
} catch (CloseException e) {
terminateConnection(e.getStatusCode(), e.getMessage());
} catch (Throwable t) {
unhandled(t);
}
}