WebSocket proxying https://nginx.org/en/docs/http/websocket.html By default, the connection will be closed if the proxied server does not transmit any data within 60 seconds. Using NGINX as a WebSocket Proxy https://www.nginx.com/blog/websocket-nginx…

StackOverflow https://stackoverflow.com/questions/5420656/unable-to-read-data-from-the-transport-connection-an-existing-connection-was-f https://briancaos.wordpress.com/2012/07/06/unable-to-read-data-from-the-transport-connection-the-connection-was-c…

现象; 前段时间在dailybuild过程中,经常遇到connection is allready closed错误,特别是在dailybuild高峰期. 分析定位: 这个错误是的起因比较多,这里的情况是在回滚事务时,连接已经关闭导致抛异常的,报这个错误说明用例已经执行通过,因此,这个错误是不影响覆盖率,只影响成功率的,可以不抛出这个错误. 解决方案: 新增了类/src/test/java/org/springframework/test/context/TestContextManager.j…

公司一SQL Server镜像发生了故障转移(主备切换),检查SQL Server镜像发生主备切换的原因,在错误日志中发现下面错误: Date        2019/8/31 14:09:17   Log     SQL Server (Archive #4 - 2019/9/1 0:00:00)       Source      spid35s       Message   Database mirroring connection error 4 'An error occurred…

当你的selenium WebDriver 启动IE11报这个错时:Unable to find element on closed window (WARNING: The server did not provide any stacktrace information),通过Google解决了:Required Configuration:For IE 11 only, you will need to set a registry entry on the target computer…

YAMLLoadWarning: calling yaml.load() without Loader=... is deprecated, as the default Loader is unsafe. Please read https://msg.pyyaml.org/load for full details.  data = yaml.load(file_data)…

网站运行一个晚上,早上来上班,发现报错: ### Error querying database. Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: No operations allowed after connection closed. 网上查了下,由于使用了默认配置,空闲超过8小时,自动断开该连接 我使用的是mybatis的默认连接池,于是把该配的,都配置上.datasource的属性…

解决方案: My evil workaround (don't do this in production!): import urllib2 #也可以是urllib import ssl ctx = ssl.create_default_context() ctx.check_hostname = False ctx.verify_mode = ssl.CERT_NONE urllib2.urlopen("https://your-test-server.local", contex…

问题现象: 由于最近在docker上部署hadoop,最开始搭建完以后,ssh是正常的,当我重启系统以后就出现了上面的这个问题 解决: 修改配置文件:/etc/ssh/sshd_config 把PermitRootLogin改为yes,把UsePAM改为no 然后重新启动ssh服务 /etc/init.d/ssh restart 现在去连就OK了.…

认真读error: 办法一: 点击项目右键->Android tools ->Fix Project Properties,检查项目属性 办法二: 设备管理器,查看是否存在adb进程 如果存在adb进程,中止,重启eclipse 如果不存在,DOS环境下,找到adb所在路径(eclipse->sdk->platform-tools->adb.exe) 执行 adb kill-server 之后,执行 adb -startserver 办法三: 查看platform-tools…