How to identify an application run in server using url - tcp

How can we identify an application running on a server using a url? What will be included in the url to identify the application? Is it the IP address of the server?

If you are attempting to identify what applications a server is running (or serving) based on just the URL, it isn't that simple.
A single server could be running zero, one, or many applications. Additionally, not all applications running on a server will be accessible via HTTP. Therefore, not all applications can be identified via URL.
URLs tend to represent the file/routing structure on a web server. Your best guess at what application is running on a server, solely based on URL, would be to reference the fully qualified domain name (FQDN). The FQDN may hint about what the web server you are utilizing may be intended for.

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How to redirect certain outgoing request to my local server?

we have a microservice setup with multiple small services.
I want to redirect requests for a specific service to my local server. Of course, I can change BASE_URL in my webapp, but I'm looking for a way that I don't have to change the codebase or environment variables.
So, is there a way to do that at Mac OS level?
"mitmproxy" will do this job?

How to host HTTPS API on LAN

I'm planning an API that will be used by a client on their internal office networks in multiple separate locations. Each location will have a separate instance installed.
They want it to be secure and running on HTTPS.
What I cant seem to understand how can a HTTPS certificate work when there is no externally facing fully qualified name. eg. MyApiServer.mycompany.com
Instead they will likely just be running it on a server/computer with just a hostname. ie. MyApiServer
The data being transferred is not necessarily sensitive but it places records in a sales system.
If HTTPS is not possible in this scenario whats an alternative method to secure the communication?
The server name has not to be "fully-qualified". For securing the call it will be enough to have the domain specified in URL equal to the domain name specified in certificate.
So your clients would call https://MyApiServer/endpoint in your LAN which should cause your service to provide server certificate where the subject would be MyApiServer.

How necessary is DNS Server to run an ASP.NET web app on IIS?

Assuming a Windows Server 2012 VPS:
It seems that many tutorials include the setting up of DNS Server (setup of forward lookup zones, and A record) as part of the basic steps to deploy and run an ASP.NET web application on IIS.
I'm slightly confused, because within IIS manager you can set the bindings ( IP address, URL, SSL, port) of a web application. Wouldn't this alone not suffice to correctly route incoming requests to the correct web application?
What would be the advantage to running DNS Server?
IIS Manager can only manage IIS related Windows settings, but to make a site work you need much more settings than that.
DNS settings are critical to direct web browsers to your side. Nobody uses IP addresses to access a site, so a typical URL uses domain name. That requires DNS to translate the domain name to an IP address so that browsers can send HTTP packets to the proper location.
IIS Manager could not manage that for you, as which DNS product to use or how to configure it is usually vendor specific and out of IIS's scope.

Sending files from server to client with ASP.NET

I am developing a C# ASP.NET 4.0 application that will reside on a Windows Server 2003. By mean of accessing this application through a network computer, any user would be able to upload files to the windows server. But also, once these files are stored on server, he/she would be able to copy these files from the windows server to another networked computer.
I have found a way to upload files to a specified location on the server disk,
but now I need to send these files that are on server disk to the client computers.
My question is: Is there any way to send or copy files from server to other client computers (not the one that is accessing the web service) without needing a program recieving those files on the client computers? FTP, WCF, cmd commands, sockets?
Any idea?
If you want users of your webapp to download files, I'd look into an "ashx generic handler." It will allow you to send files back down to clients over HTTP(s).
If you are looking to have remote users, tell your webserver to copy files to other servers ON THE SAME LAN AS THE SERVER, you would write using normal System.IO operations.
Over a LAN, if you have the correct permissions and so on, you can write to a disk on a different machine using File.Copy -- there's nothing special about that.
If we're talking about remote machines over the internet, that's a different story. Something has to be listening whether it's FTP, WCF, DropBox, etc.
If the problem is that it can be painful to get something like WCF to work from a client due to problems like firewall issues under Windows 7, you could take a different route and have the client periodically ping the server looking for new content. To give the server a point of reference, the ping could contain the name or creation date of the most recent file received. The server could reply with a list of new files, and then the client could make several WCF calls, one by one, to pull the content down. This pattern keeps all the client traffic outbound.
You can if you can run the program as an account that has access to that computer. However having this sort of access on your network that would grant access to the outside world to put an unfiltered file on your internal network is just asking to be hacked.
Finally, I decided to install a FileZilla FTP server on each client computer and my page is working very well. But another option is to create a work group in the windows server and put every client computer to work in this work group, so that Windows server have access to the computers in the same work group.
Here are some links that may help to create the work groups:
http://helpdeskgeek.com/networking/cannot-see-other-computers-on-network-in-my-network-places/
http://www.computing.net/answers/windows-2003/server-2003-workgroup-setup-/1004.html

Is it possible to manipulate an asp.net web application cache from outside the web?

I have a situation very similar to the one in this question:
Selective Cache clearing across load balanced servers (ASP.Net)
The difference is that due to our hosting configuration, I am unable to address individual servers by IP address. Assuming I cannot access specific servers via web requests, is it possible to access the HttpContext of a web application running on the same machine? I'm thinking I could accomplish this with a windows service that I could address by machine name, or alternately a console application, I just don't know if I can gain access to the web application cache either way.
You can expose content of the WebCache of an app through some Remoting/WCF code built into the web app. I hope you can use localhost to access it from an app on the same box.

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