NettyServer.java 文件源码

@Override
public void write(ChannelHandlerContext ctx, Object msg, ChannelPromise promise) throws Exception {
    LOG.trace("NettyServerHandler: Channel write: {}", msg);
    if (isWebSocketServer() && msg instanceof ByteBuf) {
        if(isFragmentWrites()) {
            ByteBuf orig = (ByteBuf) msg;
            int origIndex = orig.readerIndex();
            int split = orig.readableBytes()/2;

            ByteBuf part1 = orig.copy(origIndex, split);
            LOG.trace("NettyServerHandler: Part1: {}", part1);
            orig.readerIndex(origIndex + split);
            LOG.trace("NettyServerHandler: Part2: {}", orig);

            BinaryWebSocketFrame frame1 = new BinaryWebSocketFrame(false, 0, part1);
            ctx.writeAndFlush(frame1);
            ContinuationWebSocketFrame frame2 = new ContinuationWebSocketFrame(true, 0, orig);
            ctx.write(frame2, promise);
        } else {
            BinaryWebSocketFrame frame = new BinaryWebSocketFrame((ByteBuf) msg);
            ctx.write(frame, promise);
        }
    } else {
        ctx.write(msg, promise);
    }
}