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What is the Difference Between read() and recv() , and Between send() and write()?

... The difference is that recv()/send() work only on socket descriptors and let you specify certain options for the actual operation. Those functions are slightly more specialized (for instance, you can set a flag to ignore SIGPIPE, or to send out-of-band messages...). Functions read()/wr...
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MongoDB副本集详解 优于以往的主从模式 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术

...点成为主节点。 Hidden:这类节点是不能够被客户端制定IP引用,也不能被设置为主节点,但是可以投票,一般用于备份数据。 Delayed:可以指定一个时间延迟从primary节点同步数据。主要用于备份数据,如果实时同步,误删除...
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Max retries exceeded with URL in requests

...server refuses your connection (you're sending too many requests from same ip address in short period of time) Max retries exceeded with url: /in/app/adobe-reader/id469337564?mt=8 error trace is misleading it should be something like "No connection could be made because the target machine act...
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TaifunWiFi 拓展:WiFi Manager WiFi管理器扩展 · App Inventor 2 中文网

...i状态控制(启用/禁用WiFi) 网络信息查询(SSID、BSSID、IP地址等) 可用网络扫描 网络连接管理 信号强度检测 5GHz频段支持检测 DNS服务器查询 位置权限管理 网络建议API支持 扩展截图 ...
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Regular expression to match DNS hostname or IP Address?

... have a regular expression handy that will match any legal DNS hostname or IP address? 21 Answers ...
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Detecting iOS / Android Operating system

... // iOS detection from: http://stackoverflow.com/a/9039885/177710 if (/iPad|iPhone|iPod/.test(userAgent) && !window.MSStream) { return "iOS"; } return "unknown"; } share | ...
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Detect iPad users using jQuery?

Is there a way to detect if the current user is using an iPad using jQuery/JavaScript? 4 Answers ...
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ZMQ: 基本原理 - 开源 & Github - 清泛网 - 专注C++内核技术

...用“连接”这一点是为了描述模型工作的实际情况,即使IP多播或UDP等无连接的底层传输亦是如此。 第2点说明所有拓扑里的应用程序应该就什么达成一致:正被传送的消息(比如“这是一张需调整尺寸的图片”或“这是调整后的...
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搭建高可用mongodb集群(四)—— 分片 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术

...理部署图: 架构搭好了,安装软件! 1、准备机器,IP分别设置为: 192.168.0.136、192.168.0.137、192.168.0.138。 2、分别在每台机器上建立mongodb分片对应测试文件夹。 #存放mongodb数据文件 mkdir -p /data/mongodbtest #进入mongodb文件...
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What is the best way to detect a mobile device?

... similar to the CSS @media attribute? I would like to run a different script if the browser is on a handheld device. 59 A...