Netty3JSONResponse.java 文件源码

/**
 * Sends this response to all the passed channels as a {@link TextWebSocketFrame}
 * @param listener A channel future listener to attach to each channel future. Ignored if null.
 * @param channels The channels to send this response to
 * @return An array of the futures for the write of this response to each channel written to
 */
public ChannelFuture[] send(ChannelFutureListener listener, Channel...channels) {
    if(channels!=null && channels.length>0) {
        Set<ChannelFuture> futures = new HashSet<ChannelFuture>(channels.length);
        if(opCode==null) {
            opCode = "ok";
        }
        TextWebSocketFrame frame = new TextWebSocketFrame(this.toChannelBuffer());
        for(Channel channel: channels) {
            if(channel!=null && channel.isWritable()) {
                ChannelFuture cf = Channels.future(channel);
                if(listener!=null) cf.addListener(listener);
                channel.getPipeline().sendDownstream(new DownstreamMessageEvent(channel, cf, frame, channel.getRemoteAddress()));
                futures.add(cf);
            }
        }
        return futures.toArray(new ChannelFuture[futures.size()]);
    }       
    return EMPTY_CHANNEL_FUTURE_ARR;
}