My first time experience: C#/ Asp.net.core

I am planning of deploy my API to my server and error happen.

My source:

using System;using System.Collections.Generic;using System.IO;using System.Linq;using System.Net;using System.Threading.Tasks;using Microsoft.AspNetCore;using Microsoft.AspNetCore.Hosting;using Microsoft.Extensions.Configuration;using Microsoft.Extensions.Logging;
namespace johnTestBO    public class Program    {        public static void Main(string[] args)        {            CreateWebHostBuilder(args).Build().Run();        }
        public static IWebHostBuilder CreateWebHostBuilder(string[] args) =>            WebHost.CreateDefaultBuilder(args)            //Open to loop back localhost            //  .UseKestrel(options =>            // {            //    options.Listen(IPAddress.Loopback, 5001);   
                .UseStartup();            // })    }}```


The error after I run it in ssh and visual.

```Exception has occurred: CLR/System.Net.Sockets.SocketExceptionAn unhandled exception of type 'System.Net.Sockets.SocketException' occurred in System.Private.CoreLib.dll: 'Cannot assign requested address'   at System.Net.Sockets.Socket.UpdateStatusAfterSocketErrorAndThrowException(SocketError error, String callerName)   at System.Net.Sockets.Socket.DoBind(EndPoint endPointSnapshot, SocketAddress socketAddress)   at System.Net.Sockets.Socket.Bind(EndPoint localEP)   at Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.SocketTransport.BindAsync()   at Microsoft.AspNetCore.Server.Kestrel.Core.KestrelServer.<>c__DisplayClass21_0`1.<g__OnBind|0>d.MoveNext()   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)   at Microsoft.AspNetCore.Server.Kestrel.Core.Internal.AddressBinder.d__3.MoveNext()   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)   at Microsoft.AspNetCore.Server.Kestrel.Core.ListenOptions.d__43.MoveNext()   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)   at Microsoft.AspNetCore.Server.Kestrel.Core.Internal.AddressBinder.AddressesStrategy.d__2.MoveNext()   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)   at Microsoft.AspNetCore.Server.Kestrel.Core.Internal.AddressBinder.d__0.MoveNext()   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)   at Microsoft.AspNetCore.Server.Kestrel.Core.KestrelServer.d__21`1.MoveNext()   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)   at Microsoft.AspNetCore.Hosting.Internal.WebHost.d__26.MoveNext()   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)   at Microsoft.AspNetCore.Hosting.WebHostExtensions.d__5.MoveNext()   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)   at Microsoft.AspNetCore.Hosting.WebHostExtensions.d__4.MoveNext()   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)   at Microsoft.AspNetCore.Hosting.WebHostExtensions.Run(IWebHost host)   at johnTestBO.Program.Main(String[] args) in /home/sabrina/Downloads/example/johnTestBO/Program.cs:line 18

```

First when I deploy the API to the localhost:5001, all work fine until I put everything together in the server. I did dotnet publish the project. before this I sudo scp - r the (all files) relevant project to the server's /home . dotnet build && dotnet run, and all work fine. I came to mind that that wasn't a good idea for uploading all files without compounding it. Then I did only upload the 'Publish' folder which had already a 'compound' . As soon as I dotnet build && dotnet run it in my Visual prompted this error.

Sources:

From the server(using Termius(no longer using puTTY)-Ubuntu):

and also prompted

"MSBUILD : error MSB1003: Specify a project or solution file. The current working directory does not contain a project or solution file."

From My Visual Code Studio:

I  clicked Debug anyway
then this prompt came

Then a Professional gave me solid solution, and all I need to do is logical alter a little. Reverse engineering ! 

He said :"

 

 

Member

tmds commented 23 hours ago

@johnmelodyme an example: Create a web webapplication dotnet new web -o webapp cd webapp Publish it: dotnet publish -c Release Copy the publish folder to your server (/tmp/myserver represents a folder on the server): cp -r bin/Release/netcoreapp2.2/publish /tmp/myserver On the server: cd /tmp/myserver ASPNETCORE_URLS=http://*:8080 dotnet webapp.dll you mustn't use dotnet run on your server, that command is for development. use the ASPNETCORE_URLS environment variable to configure the binding address

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