SignalR: can't connect to local or any other ip address - asp.net-mvc

Question

I am trying to make SignalR server and client architecture in which i am able to connect to "http://localhost:8080" or http://127.0.0.1:8080/ but i am not able to connect my local ip address like "192. x.x.x" so what could be reason?
please help me i am also placing my code overhere...
public partial class WinFormsServer : Form
{
private IDisposable SignalR { get; set; }
const string ServerURI = "http://localhost:8080";
private void ButtonStart_Click(object sender, EventArgs e)
{
WriteToConsole("Starting server...");
ButtonStart.Enabled = false;
Task.Run(() => StartServer());
}
private void StartServer()
{
try
{
SignalR = WebApp.Start(ServerURI);
}
catch (TargetInvocationException)
{
WriteToConsole("Server failed to start. A server is already running on " + ServerURI);
//Re-enable button to let user try to start server again
this.Invoke((Action)(() => ButtonStart.Enabled = true));
return;
}
this.Invoke((Action)(() => ButtonStop.Enabled = true));
WriteToConsole("Server started at " + ServerURI);
}
class Startup
{
public void Configuration(IAppBuilder app)
{
app.UseCors(CorsOptions.AllowAll);
app.MapSignalR();
}
}
}

Answer 1

I tried different solutions but could not find correct one.
Finally I found the issue that was only related to the permission.
Run your SignalR server application as administrator. It will start running on the local IP like 192.168.X.X:9090 and then your client application can connect this server from any other PC using this IP address.
class Program
{
static void Main(string[] args)
{
var url = $"http://{GetLocalIPAddress()}:8080";
using (WebApp.Start<Startup>(url))
{
Console.WriteLine($"Server running at {{{url}}}");
Console.ReadLine();
}
}
public static string GetLocalIPAddress()
{
var host = Dns.GetHostEntry(Dns.GetHostName());
foreach (var ip in host.AddressList)
{
if (ip.AddressFamily == AddressFamily.InterNetwork)
{
return ip.ToString();
}
}
throw new Exception("Local IP Address Not Found!");
}
}

Answer 2

To get your local IP address you could use this function:
public static string GetLocalIPAddress()
{
var host = Dns.GetHostEntry(Dns.GetHostName());
foreach (var ip in host.AddressList)
{
if (ip.AddressFamily == AddressFamily.InterNetwork)
{
return ip.ToString();
}
}
throw new Exception("Local IP Address Not Found!");
}
If you want to use FQDN - Fully Qualified Domain Name, then you could use this function:
public static string GetLocalFQDN()
{
var props = IPGlobalProperties .GetIPGlobalProperties();
return props.HostName + (string.IsNullOrWhiteSpace(props.DomainName) ? "" : "." + props.DomainName);
}
After that you could use:
SignalR = WebApp.Start("http://" + GetLocalFQDN() + ":8080");
or
SignalR = WebApp.Start("http://" + GetLocalIPAddress() + ":8080");
I hope this helps.

Answer 3

Since you are using this source i used the same too.
-For FQDN, first create the function below.
public static string GetLocalFQDN()
{
var props = IPGlobalProperties.GetIPGlobalProperties();
return props.HostName + (string.IsNullOrWhiteSpace(props.DomainName) ? "" : "." + props.DomainName);
}
Then modify the const string ServerURI to:
string ServerURI =String.Concat("http://",GetLocalFQDN(),":8080");
-For LocalIPAdress, first create the function below which will the your local address:
public static string GetLocalIPAddress()
{
var host = Dns.GetHostEntry(Dns.GetHostName());
foreach (var ip in host.AddressList)
{
if (ip.AddressFamily == AddressFamily.InterNetwork)
{
return ip.ToString();
}
}
throw new Exception("Local IP Address Not Found!");
}
and change the string ServerURI =String.Concat("http://",GetLocalFQDN(),":8080"); to:
string ServerURI =String.Concat("http://",GetLocalIPAddress(),":8080");
Hope this helps you.
Note: The changes should be done in the WinFormsServer:Form class on the WinFormsServer project.