ByteBufToWebSocketFrameCodec.java 文件源码

@Override
protected void decode(final ChannelHandlerContext ctx, final WebSocketFrame msg, final List<Object> out)
    throws Exception {
    if (msg instanceof BinaryWebSocketFrame) {
        ByteBuf content = msg.content();
        // the content is passed to other handlers so they need to be retained.
        content.retain();
        fragments.add(content);
        if (msg.isFinalFragment()) {
            if (fragments.size() == 1) {
                out.add(fragments.get(0));
            } else {
                ByteBuf[] array = fragments.toArray(BYTE_BUF_TYPE);
                out.add(Unpooled.wrappedBuffer(array));
            }
            fragments.clear();
        }
    } else if (msg instanceof TextWebSocketFrame) {
        LOG.warn("Recieved a Websocket text frame. This was not expected. Ignoring it.");
    }
}