@Override protected void doMessageReceived(ClientConnection conn, ChannelHandlerContext ctx, Object msg) { if (conn == null || conn.isClosed()) { return; } boolean valid = false; if (msg instanceof HttpResponse) { HttpResponse response = (HttpResponse) msg; conn.handleResponse(response); valid = true; } if (msg instanceof HttpContent) { HttpContent chunk = (HttpContent) msg; if (chunk.content().isReadable()) { Buffer buff = new Buffer(chunk.content().slice()); conn.handleResponseChunk(buff); } if (chunk instanceof LastHttpContent) { conn.handleResponseEnd((LastHttpContent) chunk); } valid = true; } else if (msg instanceof WebSocketFrame) { WebSocketFrame frame = (WebSocketFrame) msg; switch (frame.getType()) { case BINARY: case TEXT: conn.handleWsFrame(frame); break; case PING: // Echo back the content of the PING frame as PONG frame as specified in RFC 6455 // Section 5.5.2 ctx.writeAndFlush( new DefaultWebSocketFrame(WebSocketFrame.FrameType.PONG, frame.getBinaryData())); break; case CLOSE: if (!closeFrameSent) { // Echo back close frame and close the connection once it was written. // This is specified in the WebSockets RFC 6455 Section 5.4.1 ctx.writeAndFlush(frame).addListener(ChannelFutureListener.CLOSE); closeFrameSent = true; } break; } valid = true; } if (!valid) { throw new IllegalStateException("Invalid object " + msg); } }