大约有 900 项符合查询结果(耗时:0.0116秒) [XML]

https://www.tsingfun.com/it/cpp/1419.html 

ZeroMQ的学习和研究(PHP代码实例) - C/C++ - 清泛网 - 专注C/C++及内核技术

...N:M 的关系,人们对 BSD 套接字的了解较多的是点对点的连接,点对点连接需要显式地建立连接、销毁连接、选择协议(TCP/UDP)和处理错误等,而 ZMQ 屏蔽了这些细节,让你的网络编程更为简单。ZMQ 用于 node 与 node 间的通信,nod...
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Xcode doesn't see my iOS device but iTunes does

..., however, and it wasn't until I finally disconnected to the iPad from the USB3 port on the left side of the computer and reconnected it to the USB3 port on the right side that Xcode finally recognized it. – Ed McLaughlin Jan 2 '14 at 13:41 ...
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Protecting executable from reverse engineering?

...ection method (Sentinel HASP HL) for many years. It requires a proprietary USB key fob which acts as the 'license' for the software. Their SDK encrypts and obfuscates your executable & libraries, and allows you to tie different features in your application to features burned into the key. Withou...
https://bbs.tsingfun.com/thread-405-1-1.html 

PHP连接MySQL报错:Fatal error: Call to undefined function mysql_connec...

【问题描述】 PHP测试连接MySQL的程序如下: <?php $host='localhost'; $user_name='root'; $password='mysql'; $conn=mysql_connect($host,$user_name,$password); if (!$conn) {     die('数据库连接失败:'.mysql_error()); } echo '数据库连接成功!'; if (mysql_clos...
https://bbs.tsingfun.com/thread-1431-1-1.html 

自己搭建的MQTT云服务器 - App Inventor 2 中文网 - 清泛IT社区,为创新赋能!

...致命问题:每次打开我的APP后,要手动订阅一遍主题 ... 连接状态的管理问题,你输出每次的连接状态看看,看App退到后台再激活后连接状态是啥。必要的时候,需要做一个重连逻辑。我在APP界面中添加了1个标签,专门用来显示...
https://www.fun123.cn/reference/pro/mysql.html 

App Inventor 2 如何连接MySQL数据库(阿里云数据库) · App Inventor 2 中文网

... App Inventor 2 如何连接MySQL数据库(阿里云数据库) App Inventor 2 如何连接MySQL数据库 开发步骤 前端代码块 后端php代码 « 返回首页 由...
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OceanBase使用libeasy原理源码分析:客户端 - 数据库(内核) - 清泛网 - 专...

...来封装一个要发出去的请求,easy_client_t用来封装一个TCP连接的发起端,easy_hash_t是一个哈希表,easy_hash_list_t是采用开放寻址解决hash冲突的链表节点。 一、异步请求 在OceanBase 0.4 中,mergeserver请求chunkserver是异步的方式。实际使...
https://www.tsingfun.com/it/tech/2004.html 

9个常用iptables配置实例 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...全管理,比如设定只能通过指定网段、由指定网口通过SSH连接本机: iptables -A INPUT -i eth0 -p tcp -s 192.168.100.0/24 --dport 22 -m state --state NEW,ESTABLESHED -j ACCEPT iptables -A OUTPUT -o eth0 -p tcp --sport 22 -m state --state ESTABLISHED -j ACCEPT 若要支持...
https://www.tsingfun.com/it/tech/453.html 

Postfix发信的频率控制几个参数 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...的频率控制有几个: smtpd_client_connection_rate_limit=5 ip地址连接的频率控制. smtpd_client_message_rate_limit=5 客户端发送邮件的频率控制.(某种情况下smtpd_client_message_rate_limit和 smtpd_client_connection_rate_limit的效果是一样.smtpd_client_connection_rat...
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Android get free size of internal/external memory

... How to get free space on removable SD card (or USB OTG flash drive) on devices with API 23? new StatFs(file.getPath()).getAvailableBytes() or file.getUsableSpace() gives 972546048 bytes regardless of real storage size on Nexus 5 (Marshmallow 6.0.1). –...