How to use

onFailure

method

in

com.mpush.netty.http.RequestContext

private void writeRequest(Channel channel, RequestContext context) {
  channel.attr(requestKey).set(context);
  pool.attachHost(context.host, channel);
  channel.writeAndFlush(context.request).addListener((ChannelFutureListener) future -> {
    if (!future.isSuccess()) {
      RequestContext info = future.channel().attr(requestKey).getAndSet(null);
      info.tryDone();
      info.onFailure(503, "Service Unavailable");
      LOGGER.debug("request failure request={}", info);
      pool.tryRelease(future.channel());
    }
  });
}

} else {//3.2如果链接创建失败，直接返回客户端网关超时
  context.tryDone();
  context.onFailure(504, "Gateway Timeout");
  LOGGER.warn("create new channel failure, request={}", context);