ChannelGroup無法按Netty 4.1.6的預期工作

Question

我有一個ChannelGroup含4個客戶機已經在逐一記錄和已被添加到該組，因為他們通過Netty的方法登錄handlerAdded 。

static ChannelGroup channels = new DefaultChannelGroup(GlobalEventExecutor.INSTANCE); 

@Override
public void handlerAdded(ChannelHandlerContext ctx) throws Exception {
    channels.add(ctx.channel());
    assignGroup(ctx.channel());
}

稍后，我將ChannelGroup保存在一個名為GameMaster的對象中，並初始化一個游戲循環，使每個客戶都有機會ChannelGroup游戲：

    static ChannelGroup channels; // contains the actual channels, saved in contructor

    public void bettingPhase(boolean isOk) {
    int i = 0;
    int y = 0;

    for (Channel chan : channels) { // Should start on the first client that logged in
        Server.MyMessage.Builder message = Server.MyMessage.newBuilder();
        message.setKeyword("304");
        message.setValue("Please input a contract:");
        chan.writeAndFlush(message); // PROBLEM HERE
        while (isOk == false) { // Loop to check the playing client's input
            Server.MyMessage.Builder message2 = Server.MyMessage.newBuilder();
            try {
                Thread.sleep(1000);
                if (playerAnswer.getKeyword().equals("CONTRACT")) {
                    System.out.println("Player has inputed contract.");
                    i++;
                    message2.setKeyword("310");
                    chan.writeAndFlush(message); // Tells the current client his turn is over
                    System.out.println("End of turn for player.");
                    for (Channel channel : channels) { // Loop to tell the next client it's his turn
                        if (y == i) {
                            message2.setKeyword("309");
                            channel.writeAndFlush(message);
                            System.out.println("Start of turn for player.");
                        }
                        y++;
                    }
                    isOk = true;
                    playerAnswer.clearKeyword();
                }

            } catch (Exception e) {
                e.printStackTrace();
            }
        }
        isOk = false;
    }
}

請原諒這段代碼。

但是由於某種原因，我的句子"304 Please input a contract:"通過chan.writeAndFlush(message); 被發送到另一個客戶端（而不是第一個客戶端，因為它應該通過循環發送）！

我想念什么嗎？

Answer 1

“第一個”是什么意思？ ChannelGroup是一個Set，它不能保證在迭代時保持插入順序。