OWIN self hosted doesn't receive connections from outside - asp.net

Question

I have a project which is made of a console application which listens to a port and acts when a message is received.
The messages are received from an asp.net web api based web site.
Both work properly together.
I wanted to combine both solutions into one executable file.
To accomplish that I used OWIN self hosted solution.
I managed to merge the web site into the console application and when working from my local machine I manage to see the web site and everything works well.
The problem occurs when I try to open the website from another machine\device connected to my LAN.
I get no response. I know it is not a firewall issue since my OWIN self hosted using the standalone website's port (I put the website down to make the port available).
This problem didn't occur when both solution where seperate.
I assume it is an owin configuration issue.
I tried to use the following code but I get access denied exception.
options.Urls.Add($"http://{Dns.GetHostName()}:{port}");
options.Urls.Add($"http://localhost:{port}");
If I use only
options.Urls.Add($"http://localhost:{port}");
There is no exception and it works from my computer as expected but not from another machine.
I did some search but didn't manage to make it work.
Any kind of assistance will be appreciated.
Thanks in advance!

Answer 1

you can either use specific ip-address or use * to listen on a port
I use below code for specific ip-address
var ip = Dns.GetHostEntry(Dns.GetHostName());
var ipaddress = ip.AddressList.FirstOrDefault(x => x.AddressFamily == AddressFamily.InterNetwork);
options.Urls.Add($"http://{ipaddress}:{port}");
or you can also do
options.Urls.Add($"http://*:{port}");

Answer 2

Open the ports on the firewall and
instead to use it
WebApp.Start("http://localhost:8080/");
Use it:
WebApp.Start("http://*:8080/");