C#•17mo ago

✅ api response 401

hey, I'm trying to use nlpcloud to translate text there is curl example:

curl "https://api.nlpcloud.io/v1/nllb-200-3-3b/translation" \
  -H "Authorization: Token <token>" \
  -H "Content-Type: application/json" \
  -X POST -d '{
    "text":"John Doe has been working for Microsoft in Seattle since 1999.",
    "source":"en",
    "target":"fr"
  }'

curl "https://api.nlpcloud.io/v1/nllb-200-3-3b/translation" \
  -H "Authorization: Token <token>" \
  -H "Content-Type: application/json" \
  -X POST -d '{
    "text":"John Doe has been working for Microsoft in Seattle since 1999.",
    "source":"en",
    "target":"fr"
  }'

I wrote following nlpclient:

public class NlpTranslationClient
{
    private readonly string _apiKey;
    private readonly Uri _uri = new("https://api.nlpcloud.io/v1/nllb-200-3-3b/translation");

    public NlpTranslationClient(string apiKey)
        => _apiKey = apiKey;

    public async Task Translate(
        string text,
        string source,
        string target)
    {
        using var client = new HttpClient();
        
        client.DefaultRequestHeaders.Add("Authorization", _apiKey);
        
        var translationObject = new TranslationObj
        {
            Text = text,
            Source = source,
            Target = target
        };

        var payload = new StringContent(
            translationObject.ToJson(),
            Encoding.UTF8,
            "application/json");

        var res = await client.PostAsync(_uri, payload); // just for testing
    }
}

public class NlpTranslationClient
{
    private readonly string _apiKey;
    private readonly Uri _uri = new("https://api.nlpcloud.io/v1/nllb-200-3-3b/translation");

    public NlpTranslationClient(string apiKey)
        => _apiKey = apiKey;

    public async Task Translate(
        string text,
        string source,
        string target)
    {
        using var client = new HttpClient();
        
        client.DefaultRequestHeaders.Add("Authorization", _apiKey);
        
        var translationObject = new TranslationObj
        {
            Text = text,
            Source = source,
            Target = target
        };

        var payload = new StringContent(
            translationObject.ToJson(),
            Encoding.UTF8,
            "application/json");

        var res = await client.PostAsync(_uri, payload); // just for testing
    }
}

everything should be good but I get 401 in res whats wrong with my code?

11 Replies

jcotton42•17mo ago

client.DefaultRequestHeaders.Add("Authorization", _apiKey); does _apiKey have the "Token" prefix? or just the token?

SWEETPONY•17mo ago

no, just a set of numbers and letters ok, I will add "Token"

jcotton42•17mo ago

well, looking at your curl example, the header value should be Token <token here> not just <token here>

SWEETPONY•17mo ago

now api returns only the status code 400 Smadge

jcotton42•17mo ago

400 is Bad Request I would use the debugger, and see what payload is

SWEETPONY•17mo ago

maybe my model is a problem idk..

jcotton42•17mo ago

that's my guess the casing might be incorrect

SWEETPONY•17mo ago

public class TranslationObj
{
    [JsonPropertyName("text")]
    public string? Text { get; set; }
    
    [JsonPropertyName("source")]
    public string? Source { get; set; }
    
    [JsonPropertyName("target")]
    public string? Target { get; set; }
}

public class TranslationObj
{
    [JsonPropertyName("text")]
    public string? Text { get; set; }
    
    [JsonPropertyName("source")]
    public string? Source { get; set; }
    
    [JsonPropertyName("target")]
    public string? Target { get; set; }
}

but it looks as in example case

jcotton42•17mo ago

hm no that should be fine...

jcotton42•17mo ago

I'd grab something like https://www.telerik.com/fiddler/fiddler-classic and compare the request made by curl, and by your app

Telerik.com

Fiddler Classic | Original Web Capturing Tool for Windows

The community-trusted Windows-only web capture tool that logs HTTP(s) network traffic. Use Fiddler Classic to capture requests and responses.

SWEETPONY•17mo ago

okay I will try, thanks the problem was here: source="eng_Latn", target="spa_Latn"

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✅ api response 401