dns

DNS Refresh Timeout with Mono

由 好久不见. 提交于 2019-12-22 17:40:41
问题 Although the current Mono project's ServicePointManager class has the DnsRefreshTimeout property enabled into its interface. The related property isn't implemented. Sample call: ServicePointManager.DnsRefreshTimeout = 10*60*1000; // 10 minutes When running my application I get the next exception on runtime: The requested feature is not implemented. (System.NotImplementedException) at System.Net.ServicePointManager.set_DnsRefreshTimeout (Int32 value) [0x00000] in /Developer/MonoTouch/Source

Reading response from TIdDNSResolver?

由 倖福魔咒の 提交于 2019-12-22 17:09:02
问题 I cannot find any simple examples of a DNS lookup using Indy 10's TIdDNSResolver component. They're all either for something I don't need (such as MX/SMTP), or are talking terms with no code . I have tried reading the result based on the few resources I can find, but don't know how I'm supposed to be reading the result. Here's what I have so far... uses IdBaseComponent, IdComponent, IdTCPConnection, IdDNSResolver; function TForm1.Lookup(const Name: String): String; var X: Integer; begin //DNS

Reading response from TIdDNSResolver?

由 若如初见. 提交于 2019-12-22 17:08:34
问题 I cannot find any simple examples of a DNS lookup using Indy 10's TIdDNSResolver component. They're all either for something I don't need (such as MX/SMTP), or are talking terms with no code . I have tried reading the result based on the few resources I can find, but don't know how I'm supposed to be reading the result. Here's what I have so far... uses IdBaseComponent, IdComponent, IdTCPConnection, IdDNSResolver; function TForm1.Lookup(const Name: String): String; var X: Integer; begin //DNS

web网站加速之CDN(Content Delivery Network)技术原理

由 你离开我真会死。 提交于 2019-12-22 15:43:04
在不同地域的用户访问网站的响应速度存在差异,为了提高用户访问的响应速度、优化现有Internet中信息的流动,需要在用户和服务器间加入中间层 CDN . 使用户能以最快的速度，从最接近用户的地方获得所需的信息，彻底解决网络拥塞，提高响应速度，是目前大型网站使用的流行的应用方案. 1. CDN 概述 CDN的全称是Content Delivery Network，即内容分发网络。其目的是通过在现有的Internet中增加一层新的 CACHE(缓存) 层，将网站的内容发布到最接近用户的网络 "边缘" 的节点，使用户可以就近取得所需的内容，提高用户访问网站的响应速度。从技术上全面解决由于网络带宽小、用户访问量大、网点分布不均等原因，提高用户访问网站的响应速度。 Cache层的技术，消除数据峰值访问造成的结点设备阻塞。Cache服务器具有缓存功能，所以大部分网页对象（Web page object）,如html, htm, php等页面文件，gif,tif,png,bmp等图片文件，以及其他格式的文件，在有效期（TTL）内，对于重复的访问，不必从原始网站重新传送文件实体, 只需通过简单的认证（Freshness Validation）- 传送几十字节的Header，即可将本地的副本直接传送给访问者。由于缓存服务器通常部署在靠近用户端，所以能获得近似局域网的响应速度，并有效减少广域带宽的消耗

wildcard paths in dnsmasq?

由 夙愿已清 提交于 2019-12-22 12:33:25
问题 Is it possible to set a wildcard * in a path pattern? address=.example.com/foo/*/bar does not seem to work. address=.example.com/foo/xxx/bar works but I have random characters I need to match for and I don't know what they are ahead of time. 回答1: Not possible. dnsmask is about the resolution of the host name only. Everything after the slash is between the web browser (or client) and the web server, the name servers don't ever get to see this part. It can get confusing, because dnsmasq uses '/

Get root DNS entry from php server; get domain name without www, ect

由 一个人想着一个人 提交于 2019-12-22 11:24:03
问题 How would one get the root DNS entry from $_SERVER['HTTP_HOST'] ? Input: example.co.uk www.example.com blog.example.com forum.example.co.uk Output: example.co.uk example.com example.com example.co.uk EDIT: Lookup list is very long 回答1: For this project: http://drupal.org/project/parallel Usage: echo parallel_get_domain("www.robknight.org.uk") . "<br>"; echo parallel_get_domain("www.google.com") . "<br>"; echo parallel_get_domain("www.yahoo.com") . "<br>"; Functions: /** * Given host name

Get root DNS entry from php server; get domain name without www, ect

由 大兔子大兔子 提交于 2019-12-22 11:20:03
问题 How would one get the root DNS entry from $_SERVER['HTTP_HOST'] ? Input: example.co.uk www.example.com blog.example.com forum.example.co.uk Output: example.co.uk example.com example.com example.co.uk EDIT: Lookup list is very long 回答1: For this project: http://drupal.org/project/parallel Usage: echo parallel_get_domain("www.robknight.org.uk") . "<br>"; echo parallel_get_domain("www.google.com") . "<br>"; echo parallel_get_domain("www.yahoo.com") . "<br>"; Functions: /** * Given host name

Setting DNS property not having any effect

由 ↘锁芯ラ 提交于 2019-12-22 10:27:13
问题 In using Java's InetAddress.getByName() to resolve hosts to IPs I want to use Google's DNS instead of the local system's default. Based on other stackoverflow questions as well as the info provided at http://docs.oracle.com/javase/6/docs/technotes/guides/net/properties.html I am using the below to set the appropriate properties: System.setProperty("sun.net.spi.nameservice.nameservers", "8.8.8.8"); System.setProperty("sun.net.spi.nameservice.provider.1", "dns,sun"); Calling System.getProperty(

How can Nginx add the Subdomain as parameter when a proxy_pass to Tomcat is executed

由 时光毁灭记忆、已成空白 提交于 2019-12-22 10:05:16
问题 What I am trying to achieve The web application should be able to support multiple subdomains without having to make any changes on the nginx or tomcat every time a new subdomain is used. (I have already done the required changes to DNS to support wild card subdomains) Nginx listens to port 80. It does a proxy_pass to tomcat at port 8080. nginx should be able to support multiple subdomain. My current setup is based on this answer. But it is not passing the parameter Nginx proxy_pass : Is it

Programmatically Changing NameServer in Windows TCP/IP

由 杀马特。学长 韩版系。学妹 提交于 2019-12-22 09:48:38
问题 I am building a VPN application where I need to set DNS server programmatically. I am changing NameServer parameter in the registry (in HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfaces ) to prepend a name server to the list of existing entries. Once I do this, if I try to look up a host name using nslookup , it works fine, but ping is not able to resolve the name - for 15 minutes. And after 15 mins ping is also able to resolve the name. I've tried my own little
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