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 :"



@tmds

 
 
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

 You can read the full conversations here .

 Follow @Johnmelodyme

Comments

Post a Comment

Popular posts from this blog

Cryptography: [Definition] Part II

-
Cryptography II Cryptography Consists of Two Branches: 1. Cryptography is the area of constructing cryptographic systems. 2. Cryptoanalysis is the are of breaking cryptographic systems. " Cryptography is a field of computer science and mathematics that focuses on techniques for secure communication between two parties."
Read more

Man In the middle attack

-
Image
A man-in-the-middle attack (MitM) is a form of active eavesdropping in which the attacker makes independent connections with the victims and relays messages between them, making them believe that they are talking directly to each other over a private connection, when in fact the entire conversation is controlled by the attacker.Usually, this is automatically done throught SSL certificates checked by your browser against a given set of recognized certificate authorities).  If you get a security exception message such as this one you might be the victim of a man-in-the-middle attack and should not bypass the warning unless you have another trusted way of checking the certificate's fingerprint with the people running the service.But on top of that the certificate authorities model of trust on the Internet is susceptible to various methods of compromise.  For example, on March 15, 2011, Comodo, one of the major SSL certificates authorities, reported that a user account w...
Read more