今天升级Xcode 7.0 bata发现网络访问失败.输出错误信息 The resource could not be loaded because the App Transport Security policy requires the use of a secure connection. Google后查证,iOS9引入了新特性App Transport Security (ATS).详情:App Transport Security (ATS) 新特性要求App内访问的网络必须使用H
场景描述: openstack私有云中的容器服务A(部署在openshift上)需要通过http访问阿里云中的B服务,中间需要经过openstack的nat网关,以及阿里云的lb.但在访问时发现访问失败,A服务无法获取B服务的http响应. 问题分析: 容器中的服务A请求阿里云的服务B时失败,但在容器所在的node节点直接curl该url是成功的,说明底层网络连接是通的.在A服务和B服务所在的node节点抓包发现,A服务发送http请求时,tcp链路是通的,但由于没有接收到B服务的http re
今天试着用Hbuilder写app的前段显示页面,在第一步时就被打住了,ajax异步调用服务器的登录接口时,报错, 显示这样的错误 XMLHttpRequest cannot loadhttp://www.baidu.com/. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'null' is therefore not allowed access. 这个百度的网址是我自
elasticsearch外网访问9200端口失败,bootstrap checks failed,the default discovery settings are unsuitable for production use; at least one of [discovery.seed_hosts, discovery.seed_providers, cluster.initial_master_nodes] must be configured Linux安装ElasticSearch