dns

SignalR Server Hosting Localhost

由 馋奶兔 提交于 2019-12-19 09:24:45
问题 I'm running a server with a localhost http://*:52080 . On the same computer, I'm run client and trying to connect to a local IP hub http://192.168.1.102:52080/signalr . Everything works well. But if I run the client on another computer (from the same local network) and try to connect to http://192.168.1.102:52080/signalr , it does not connect. The client catches an exception ( "System.AggregateException" in mscorlib.dll ). Port 52080 on the computer with the hub is open. What could be the

Get IP from DNS without using gethostbyname?

由 你离开我真会死。 提交于 2019-12-19 09:07:04
问题 PHP's gethostbyname() function doesn't seem to be configurable as far as timeouts are concerned. I want to limit DNS requests to 1 second or less as anymore shows a problem and should be ignored. So, is there a way to make a DNS query using sockets or cURL instead? I was able to make SMTP requests using PHP streams which saved server resources, so I'm looking to do the same with DNS queries. 回答1: The comments on the PHP article have some options for setting/including a timeout: <?php function

How to configure DNS records for Name.com and a Heroku app

由 ε祈祈猫儿з 提交于 2019-12-19 08:55:24
问题 I'm a bit confused about how to set up the DNS records for my domain at Name.com so it can correctly point to my Heroku app. I found DNS configuration documentation at heroku's site but I'm still confused. I'm under the impression that I need to set up a CNAME record for all subdomains and an A record for my root domain. Also, on the name.com website, when I try to add a CNAME there are three blank fields I need to fill out which kind of confuse me: "Host" (where I enter '*' so it applies to

How to change/add DNS server for connected WiFi in iOS programmatically?

由 江枫思渺然 提交于 2019-12-19 08:20:24
问题 I want to change/add DNS server for connected WiFi of my iPhone device in iOS programmatically? The Google Public DNS IP addresses (IPv4) are as follows: 8.8.8.8 8.8.4.4 I want to change/add it as like in attached screenshot programmatically. Please help. I can manage whether its in Objective-c or Swift. It will be more helpful for me in Objective-c. Thanks in advance. Dummy/Old DNS server of connected Wi-Fi:- Required DNS server of connected Wi-Fi:- 回答1: Look at the Network Extensions

How to catch getaddrinfo ENOTFOUND

由 倾然丶 夕夏残阳落幕 提交于 2019-12-19 05:37:06
问题 I have a list of links that I need to check before processing some data. Checking headers with http.get returns error: events.js:72 throw er; // Unhandled 'error' event ^ Error: getaddrinfo ENOTFOUND at errnoException (dns.js:37:11) I cannot handle this error, and exits the process. I tried res.on("error") and try..catch on http.get but nothing works. Below is the code snippet, and here is live example at runnable.com //This is OK getHeaders('http://google.com/404pag-that-does-not-exit'); /

Javascript/Regex for finding just the root domain name without sub domains

由 此生再无相见时 提交于 2019-12-19 05:16:42
问题 I had a search and found lot's of similar regex examples, but not quite what I need. I want to be able to pass in the following urls and return the results: www.google.com returns google.com sub.domains.are.cool.google.com returns google.com doesntmatterhowlongasubdomainis.idont.wantit.google.com returns google.com sub.domain.google.com/no/thanks returns google.com Hope that makes sense :) Thanks in advance!-James 回答1: You can't do this with a regular expression because you don't know how

Get domain without subdomain from a URL

由 北战南征 提交于 2019-12-19 05:12:31
问题 What is the proper way to get the domain from a URL without the subdomains? In Java, from a string you can make a new URL(urlString) and call getHost() on the URL, but you have subdomains with it. The problem is because there can be hosts like: subhost.example.com and subhost.example.co.uk There are several other of these two part domains like co.uk (see the list on https://wiki.mozilla.org/TLD_List). It seems to me the only correct way to get only the domain is to do a search through the TLD

AWS Multiple domains pointing to same server

由 瘦欲@ 提交于 2019-12-19 04:39:14
问题 I'm building a solution that will be provided to several companies. Any company will have to point their domains (or just a sub-domain) to my server and then I'll handle pages to their customers. I'm testing it with the following config: CustomerABC.com pointing to one hosted zone into Route 53 CustomerDEF.com pointing to another hosted zone into Route 53 Both hosted zones have an A record pointing to the same EC2 server instance That said, every customer that wants to use my service will

《高性能网站建设指南》读书笔记

由 你离开我真会死。 提交于 2019-12-19 04:06:41
读完这本书，对于网站性能有了一个更加深入的理解，以前对于网站的优化，还以为只是服务器的事，是后台设计模式或编码技巧的原因，是数据库优化的问题，没怎么考虑到前端的优化，但是这本书改变了我的局限思维，让我认识到前端对网站性能的影响是如此巨大： 80% 的最终用户响应时间花在了页面中的组件上，也就是说，如果我们可以将后端的响应时间缩短一半，整体响应时间只能减少 5%~10% ；而如果关注前端，缩短前端响应时间的一半，那么整体响应时间可以减少 40%~45% 。而前端改善网站性能的方法也不是无迹可寻，而是很有技巧很有方法的。这其中就包括书中介绍的 14 条规则： 1、 减少 http 请求； 2、 使用内容发布网络； 3、 添加 expires 头部； 4、 压缩组件； 5、 将样式表放在顶部； 6、 将脚本放在底部； 7、 避免 css 表达式； 8、 使用外部的 javascript 和 css ； 9、 减少 dns 查找； 10、 精简 javascript ； 11、 避免重定向； 12、 移除重复脚本； 13、 配置 etag ； 14、 使 ajax 缓存。 当然这些规则，以前自己写代码的时候有意无意的根据前人的经验而遵守着，比如，添加 expires 头部，将样式表放在顶部，将脚本放在底部，大量小图片用 css sprite 处理，将样式表和脚本以引用的方式导入 html

Accessing localhost from android over wifi

由 江枫思渺然 提交于 2019-12-19 04:05:54
问题 I have written a Https webservice, so it is encrypted with SSL. For testing i would like to acces that webservice over wifi. edit Example: My webservice is running on a VM number 111, i want to acces it over wifi so the adress would be https://VM111/Webservice/service.svc. I can acces it from any laptop in the wifi network but not from the Android Phone, that is my problem. Is there a way to acces the localhost of the VM, from the Android phone, and has anyone dealt with this before? My gues
订阅 dns