private void handleFrameFragment(WebSocketFrame frame) throws IOException { if (frame.getOpCode() != OpCode.Continuation) { // First if (this.continuousOpCode != null) { throw new WebSocketException(CloseCode.ProtocolError, "Previous continuous frame sequence not completed."); } this.continuousOpCode = frame.getOpCode(); this.continuousFrames.clear(); this.continuousFrames.add(frame); } else if (frame.isFin()) { // Last if (this.continuousOpCode == null) { throw new WebSocketException(CloseCode.ProtocolError, "Continuous frame sequence was not started."); } this.continuousFrames.add(frame); onMessage(new WebSocketFrame(this.continuousOpCode, this.continuousFrames)); this.continuousOpCode = null; this.continuousFrames.clear(); } else if (this.continuousOpCode == null) { // Unexpected throw new WebSocketException(CloseCode.ProtocolError, "Continuous frame sequence was not started."); } else { // Intermediate this.continuousFrames.add(frame); } }
public static WebSocketFrame read(InputStream in) throws IOException { byte head = (byte) checkedRead(in.read()); boolean fin = (head & 0x80) != 0; OpCode opCode = OpCode.find((byte) (head & 0x0F)); if ((head & 0x70) != 0) { throw new WebSocketException(CloseCode.ProtocolError, "The reserved bits (" + Integer.toBinaryString(head & 0x70) + ") must be 0."); } if (opCode == null) { throw new WebSocketException(CloseCode.ProtocolError, "Received frame with reserved/unknown opcode " + (head & 0x0F) + "."); } else if (opCode.isControlFrame() && !fin) { throw new WebSocketException(CloseCode.ProtocolError, "Fragmented control frame."); } WebSocketFrame frame = new WebSocketFrame(opCode, fin); frame.readPayloadInfo(in); frame.readPayload(in); if (frame.getOpCode() == OpCode.Close) { return new CloseFrame(frame); } else { return frame; } }
private void handleWebsocketFrame(WebSocketFrame frame) throws IOException { debugFrameReceived(frame); if (frame.getOpCode() == OpCode.Close) { handleCloseFrame(frame); } else if (frame.getOpCode() == OpCode.Ping) { sendFrame(new WebSocketFrame(OpCode.Pong, true, frame.getBinaryPayload())); } else if (frame.getOpCode() == OpCode.Pong) { onPong(frame); } else if (!frame.isFin() || frame.getOpCode() == OpCode.Continuation) { handleFrameFragment(frame); } else if (this.continuousOpCode != null) { throw new WebSocketException(CloseCode.ProtocolError, "Continuous frame sequence not completed."); } else if (frame.getOpCode() == OpCode.Text || frame.getOpCode() == OpCode.Binary) { onMessage(frame); } else { throw new WebSocketException(CloseCode.ProtocolError, "Non control or continuous frame expected."); } }
public void ping(byte[] payload) throws IOException { sendFrame(new WebSocketFrame(OpCode.Ping, true, payload)); }
public void send(String payload) throws IOException { sendFrame(new WebSocketFrame(OpCode.Text, true, payload)); }
public void send(byte[] payload) throws IOException { sendFrame(new WebSocketFrame(OpCode.Binary, true, payload)); }