Method close

ZezeJava/ZezeJava/src/main/java/Zeze/Net/TcpSocket.java:716–750

(@Nullable Throwable ex, boolean gracefully)

	}

	@Override
	public boolean close(@Nullable Throwable ex, boolean gracefully) {
		if (!closedHandle.compareAndSet(this, (byte)0, (byte)1)) // 阻止递归关闭
			return false;

		if (ex != null) {
			if (ex instanceof IOException)
				logger.info("close: {} {}", this, ex);
			else
				logger.warn("close: {} exception:", this, ex);
		} else
			logger.info("close: {}{}", this, gracefully ? " gracefully" : "");

		if (acceptorOrConnector instanceof Connector) {
			try {
				((Connector)acceptorOrConnector).OnSocketClose(this, ex);
			} catch (Exception e) {
				logger.error("Connector.OnSocketClose exception:", e);
			}
		}
		try {
			getService().OnSocketClose(this, ex);
		} catch (Exception e) {
			logger.error("Service.OnSocketClose exception:", e);
		}

		if (gracefully) {
			closePending = true;
			if (addInterestOps(SelectionKey.OP_WRITE))
				selector.wakeup();
			Task.schedule(120 * 1000, this::realClose); // 最多给2分钟清空输出队列。
		} else
			realClose();
		return true;
	}

	@Override
	public @NotNull String toString() {