The way we did it in the Zonemaster project was to send the name server in question a SOA query with the RD flag set for the almost certainly non-existent name xx–domain-cannot-exist.xx–illegal-syntax-tld. If the response is NXDOMAIN, the name server has performed a recursive query and is therefore an open recursor. If the response is … Read more
This is a question of opinion, so I’m not sure this is the best forum. However you have several options, including some that could be completely free. Rails and PHP as you have mentioned can be used to create a backend using mysql as the data layer. If you are new to both of those … Read more
In general terms, yes, it’s possible. Game clients receive data from their servers, which they expect to be in a particular format. If the server is modified to send mis-formatted data, the result could easily be to trigger a buffer overflow or other exploitable bug in the client. See for example http://threatpost.com/researchers-discover-dozens-of-gaming-client-and-server-vulnerabilities/100744 solved Can I … Read more
There are many ways to build up dynamic html pages, depending on what stack you use. What you are searching for are so called “Templating engines” – on the Java example there is a good article about template engines for java web applications: https://hackernoon.com/java-template-engines-ef84cb1025a4 If you use Python and Django as example, then you’ll probably … Read more
I went back over your question and this thread and this is what I recommend. You are looking to create a hosting environment for others from what I am understanding. Regardless the platform you select (linux or windows) having a beefy machine is going to be key to this. I would recommend at a minimum … Read more
There are multiple ways to approach this problem (REST, WebSocket, etc.) I recommend using sockets in this case but I’ll leave it up to you to read up on the pros/cons of different approaches. Socket.IO has a popular Android library for real-time bidirectional event-based communication between two nodes. At a high level, to use Socket.IO … Read more
Introduction Sharing text and numbers over the internet can be a daunting task, especially when it comes to developing a client-side application. Fortunately, there are a few simple solutions that can help you quickly and easily share text and numbers over the internet. In this article, we will discuss how to create a simple sharing … Read more
You need to use an FTP client from your local computer to access the server. The server itself cannot write to your local computer, unless you turn it into a server itself. solved How to copy file from hosted server to local drive using PHP [closed]
You can write the backend yourself using any language or if you just want to focus on doing Android and iOS apps then you can also use third party solutions like Firebase. solved What code should I use to manage a database connected with an android/apple app? [closed]
For what purpose you want to store int on server . If you want to store int within phone , you have different techniques for that 2 solved Suggestions to store an integer in an android app [closed]
Sidenote: Assuming the credentials are correct, given to you by your web host. There are several problems with this code (taken from a comment you left). Firstly, three of your declarations are not quoted and are being treated as constants. PHP error reporting would have thrown notices of undefined constants. These are treated as constants: … Read more