Vortac Posts - Answer Overflow

Vortac

•Created by Vortac on 1/25/2024 in #help

How to use Server Sent Events with HttpClient

I'm working with an API framework (https://docs.mistral.ai/api/#operation/createChatCompletion) in which you send a chat request. If you set the stream parameter to true:

tokens will be sent as data-only server-sent events as they become available, with the stream terminated by a data: [DONE] message. Otherwise, the server will hold the request open until the timeout or until completion, with the response containing the full result as JSON.

tokens will be sent as data-only server-sent events as they become available, with the stream terminated by a data: [DONE] message. Otherwise, the server will hold the request open until the timeout or until completion, with the response containing the full result as JSON.

To handle this, I created an SssEvent class with the following properties:

public string EventType { get; set; }
public string Data { get; set; }

public string EventType { get; set; }
public string Data { get; set; }

I have the code working for non-streaming calls, but I'm confused as to how to send my initial message and then stream back the response. My code currently looks like this: https://paste.mozilla.org/BD3gMX5o

6 replies

CC#

•Created by Vortac on 1/24/2024 in #help

Interface Design Question

I have an interface IAuthenticatable with one method: Task<Tokens> GetAccessTokensAsync() that I'd like to use for two different API authentication classes. However, the two authenticated API responses vary, so I'm just wondering what I should do. Use separete interfaces for each API?

14 replies

CC#

•Created by Vortac on 12/17/2023 in #help

✅ Streaming From REST API?

I'm building an SDK to interface with a REST API, and for one of then endpoints you can supply a boolean to specify if you want streaming or not. In particular, it mentions:

//  Default: false
// Whether to stream back partial progress. If set, tokens will be sent as data-only server-sent events as they become available, with the stream terminated by a data: [DONE] message. Otherwise, the server will hold the request open until the timeout or until completion, with the response containing the full result as JSON.

//  Default: false
// Whether to stream back partial progress. If set, tokens will be sent as data-only server-sent events as they become available, with the stream terminated by a data: [DONE] message. Otherwise, the server will hold the request open until the timeout or until completion, with the response containing the full result as JSON.

I'm just wondering, do I use HTTPClient for this? Or is there another way to handle streams?

15 replies

CC#

•Created by Vortac on 11/25/2023 in #help

ASP .NET 7 - Testing a JWT Token Generator

I have an ASP .NET web api which calls a CreateToken() method inside a TokenService to generate a JWT when a user logs in. The public implementation looks like this:

    public string CreateToken(ApplicationUser user)
    {
        var expiration = DateTime.UtcNow.AddMinutes(ExpirationMinutes);
        var token = CreateJwtToken(
            CreateClaims(user),
            CreateSigningCredentials(),
            expiration
        );
        var tokenHandler = new JwtSecurityTokenHandler();
        
        _logger.LogInformation("JWT Token created");
        
        return tokenHandler.WriteToken(token);
    }

    public string CreateToken(ApplicationUser user)
    {
        var expiration = DateTime.UtcNow.AddMinutes(ExpirationMinutes);
        var token = CreateJwtToken(
            CreateClaims(user),
            CreateSigningCredentials(),
            expiration
        );
        var tokenHandler = new JwtSecurityTokenHandler();
        
        _logger.LogInformation("JWT Token created");
        
        return tokenHandler.WriteToken(token);
    }

There's also 3 private helper methods inside TokenService which are used to help generate the token. I should only be testing the public method correct? Also, what should I be testing for here? I've done basic unit tests before (like testing an AddNumbers(int 1, int 2)), but am I supposed to generate the token in the test and then compare it to a "correctly" generated version?

1 replies

CC#

•Created by Vortac on 11/24/2023 in #help

✅ ASP Net 7 - Return list of objects as an object with a nested list

I have an endpoint with the following code:

public async Task<List<Page>> ListPages()
{
   var pages = await _dbContext.Pages.ToListAsync();
        
    return pages;
}

public async Task<List<Page>> ListPages()
{
   var pages = await _dbContext.Pages.ToListAsync();
        
    return pages;
}

This returns a list like:

[
  {
    "id": 1,
    "title": "Hello ASP!",
    "body": "<p>Testing</p>",
    "author": "M"
  },
  {
    "id": 2,
    "title": "Second Page",
    "body": "<p>Cool!</p>",
    "author": "M"
  }
]

[
  {
    "id": 1,
    "title": "Hello ASP!",
    "body": "<p>Testing</p>",
    "author": "M"
  },
  {
    "id": 2,
    "title": "Second Page",
    "body": "<p>Cool!</p>",
    "author": "M"
  }
]

I want to return:

```
{ "data": 
[{
    "id": 1,
    "title": "Hello ASP!",
    "body": "<p>Testing</p>",
    "author": "M"
  },
  {
    "id": 2,
    "title": "Second Page",
    "body": "<p>Cool!</p>",
    "author": "M"
  }]
}

```
{ "data": 
[{
    "id": 1,
    "title": "Hello ASP!",
    "body": "<p>Testing</p>",
    "author": "M"
  },
  {
    "id": 2,
    "title": "Second Page",
    "body": "<p>Cool!</p>",
    "author": "M"
  }]
}

```

6 replies

CC#

•Created by Vortac on 11/20/2023 in #help

Dynamically enable/disable a route in ASP.NET 7?

Is there a way to dynamically enable/disable a route in ASP.NET 7? I'd like to be able to enable/disable a registration endpoint of an API depending on whether or not an admin selects.

17 replies

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