.NET (Core and Framework)

@inject IPagingSettings PageSettings;

ClientId: "0efb6359-0d88-4196-9f53-054b042b2ae1"
Instance: https://login.microsoftonline.com/",
ResourceId: "api://0efb6359-0d88-4196-9f53-054b042b2ae1/.default", // this should be 41eeebbd-ea7f-4f49-a936-1624b6cb9c72
TenantId: "90fff3ee-9a7c-4eb1-8259-4d8c6bf6ca90"

ClientId: "41eeebbd-ea7f-4f49-a936-1624b6cb9c72",
Instance: "https://login.microsoftonline.com/",
ResourceId: "api://0efb6359-0d88-4196-9f53-054b042b2ae1/.default" // this should be 41eeebbd-ea7f-4f49-a936-1624b6cb9c72
TenantId: "90fff3ee-9a7c-4eb1-8259-4d8c6bf6ca90"

string url = "https://nfn.nasdaq.com/servicecall/tempsession";
 Uri u = new Uri(url);
    
 string username = "test1";
 string password = "test1";
 string accessKey = "my key";
    
 var payload = new Dictionary<string, string>
 {
   {"username", username},
   {"password", password},
   { "accesskey", accessKey}
 };
    
 string strPayload = JsonConvert.SerializeObject(payload);
 HttpContent c = new StringContent(strPayload, Encoding.UTF8, "application/x-www-form-urlencoded");
    
 var response = string.Empty;
 ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12 | SecurityProtocolType.Tls11;
 using (var client = new HttpClient())
 {
  //client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", accessKey);
  //client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Authorization", "Bearer " + accessKey);
    
  HttpRequestMessage request = new HttpRequestMessage
  {
  Method = HttpMethod.Post,
  RequestUri = u,
  Content = c
  };
    
  var result = client.SendAsync(request).Result;
  if (result.IsSuccessStatusCode)
  {
  response = result.StatusCode.ToString();
  }
 }

This code is generating the token which would valid up to 24 hours:

 public IActionResult Login([FromBody]LoginModel user)  
 {  
     if (user == null)  
     {  
         return BadRequest("Invalid request");  
     }  
          
     if (user.UserName == "johncitizen" && user.Password == "abc@123")  
     {  
         var secretKey = new SymmetricSecurityKey(Encoding.UTF8.GetBytes("KeyForSignInSecret@1234"));  
         var signinCredentials = new SigningCredentials(secretKey, SecurityAlgorithms.HmacSha256);  
    
         var tokeOptions = new JwtSecurityToken(  
             issuer: "http://localhost:2000",  
             audience: "http://localhost:2000",  
             claims: new List<Claim>(),  
             expires: DateTime.Now.AddMinutes(1440), // valid till 24 hours
             signingCredentials: signinCredentials  
         );  
    
         var tokenString = new JwtSecurityTokenHandler().WriteToken(tokeOptions);  
         return Ok(new { Token = tokenString });  
     }  
     else  
     {  
         return Unauthorized();  
     }  
 }  

MissingMethodException: Method not found: Microsoft.AspNetCore.Razor.Language.RazorConfiguration Microsoft.AspNetCore.Razor.Language.RazorConfiguration.Create(Microsoft.AspNetCore.Razor.Language.RazorLanguageVersion, System.String, System.Collections.Generic.IEnumerable`1<Microsoft.AspNetCore.Razor.Language.RazorExtension>)
Microsoft.AspNetCore.Mvc.Razor.Extensions.RazorPageDocumentClassifierPass..cctor()