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converting cURL request to asp.net c#

i try to work around converting this to c# but i cant understand the tags like -H others am familiar with like the BVN and secret key are clear to me, but i'm literally at cross road.
curl https://api.paystack.co/bank/resolve_bvn/:BVN
-H "Authorization: Bearer YOUR_SECRET_KEY"
-X GET
this enlightened me but i'm new to using curl

I only want to explain command flags.
-H means request header. In your case, you need to set header with name Authorization to the secret key Bearer YOUR_SECRET_KEY eg Bearer abcd123566 where abcd123566 is your secret key.
-X GET means your request method (HTTP verb) should be GET

-H means the headers of the request. In C# the code would look something like this:
private static HttpClient httpClient = new HttpClient();
var uri = new Uri("https://api.paystack.co/bank/resolve_bvn/:BVN");
var reqMessage = new HttpRequestMessage(HttpMethod.Get, uri);
reqMessage.Headers.Authorization = new AuthenticationHeaderValue("Bearer", "YOUR_SECRET_KEY")
// Setting the request content (including content-type)
reqMessage.Content = new StringContent("Content of request", Encoding.UTF8, "application/json");
var resp = await httpClient.SendAsync(reqMessage);
You can read more HttpClient and API requests in C# here:
https://learn.microsoft.com/en-us/dotnet/api/system.net.http.httpclient?view=netcore-3.1
https://learn.microsoft.com/en-us/aspnet/web-api/overview/advanced/calling-a-web-api-from-a-net-client

Receiving 401 "Unauthorized" error while using Google Cloud AutoML via HttpClient

I am writing a WPF application with C# that attempts to make an Google Cloud AutoML API call with HttpClient. I am able to make contact with the server but always get back an "Unauthorized" response. I have scoured StackOverflow and the AutoML documentation for any hint as to how to properly turn the "CURL" request into a simple HTTP request that I can execute programmatically within my C# application, but haven't found anything that gave enough guidance up to this point (hence my question).
Here is the CURL request that I am modeling my HTTP request after:
curl -X POST -H "Content-Type: application/json" \
-H "Authorization: Bearer $(gcloud auth application-default print-access-token)" \
https://automl.googleapis.com/v1beta1/projects/image-object-detection/locations/us-central1/models/MyProjectId:predict -d #request.json
There are elements of this request that I cannot figure out how to translate into C#, namely the Authorization: Bearer component. Do I need to somehow find a token and add it to a header or something? If so, how do I acquire this token in string form? That seems to be what I'm really stuck on.
And here is the C# code that I actually have up to this point.
public async Task<object> GetPrediction(string imagePath)
{
string apiKey = "MyApiKey";
string projectId = "MyProjectId";
HttpResponseMessage response;
byte[] img = File.ReadAllBytes(imagePath);
string jsonBody = "{\"payload\":{\"image\":{\"imageBytes\":\"" + Encoding.UTF8.GetString(imgBody) + "\"}}}";
string uri = $"https://automl.googleapis.com/v1beta1/projects/image-object-detection/locations/us-central1/models/{projectId}:predict?key={apiKey}";
string token = “MyToken”;
var client = new HttpClient();
var request = new HttpRequestMessage(HttpMethod.Post, uri);
request.Headers.TryAddWithoutValidation("Content-Type", "application/json");
request.Headers.Authorization = new AuthenticarionHeaderValue(“Bearer”, token);
request.Content = new StringContent(jsonBody, Encoding.UTF8, "application/json");
response = await client.SendAsync(request);
return Task.FromResult(response);
}
This code basically makes contact, then I get back a 401 "unauthorized" status code. Any suggestions or guidance would be greatly appreciated, and if additional information is required, I would be glad to post more. Thanks!
Update:
I modified the code block to include the suggested change from Nkosi, but I am still seeing the same 401 status code.

I am not seeing the Authorization header added to request
-H "Authorization: Bearer $(gcloud auth application-default print-access-token)"
like in the cURL example
set the Authorization on the request before sending it
//...
request.Headers.Authorization = new AuthenticationHeaderValue("Bearer", "{token-here}");
//...

FortiGate API POST Request returns 403 Forbidden with C# RestSharp

I'm currently making a ASP.NET C# Web Forms application using the Fortinet API, with the intent to block certain IP addresses or URLs from it.
The C# request returns HTTP 403 Forbidden error, while the cURL request POST successfully. This only happens with POST requests: GET requests work just fine both in .NET and cURL.
According to the documentation I've found online, the FortiNet API validates authentication using the X-CSRFTOKEN header for a POST request, and cookies for authentication. They are included in both requests. While I debugged, I've replaced the cookie values in my cookie.txt file used in my cURL request with the same ones contained in the cookies Dictionary value, and the result is the same: it passes with cURL, not with C#.
Here's my RestSharp request:
private IRestResponse createAddress(Dictionary<string, string> cookies, JObject data)
{
RestClient client = new RestClient(baseUri);
RestRequest request = new RestRequest("api/v2/cmdb/firewall/address", Method.POST);
request.AddHeader("Content-Type", "application/json");
foreach (KeyValuePair<string, string> cookie in cookies)
{
request.AddCookie(cookie.Key, cookie.Value);
}
request.AddHeader("X-CSRFTOKEN", cookies["ccsrftoken"]);
string json = JsonConvert.SerializeObject(data);
request.AddParameter("application/json", json, ParameterType.RequestBody);
ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12 | SecurityProtocolType.Tls11 | SecurityProtocolType.Tls;
ServicePointManager.ServerCertificateValidationCallback += (sender, certificate, chain, sslPolicyErrors) => true;
return client.Execute(request);
}
Here's my JSON payload, contained in the JObject data in C#, and in the params.json file for cURL:
{
"vdom": "root",
"name": "address",
"json": {
"type": "fqdn",
"name": "lostininternet.com",
"fqdn": "lostininternet.com"
}
}
And here's my cURL Request:
curl -d "#params.json" -H "Content-Type: application/json" -H "X-CSRFTOKEN: XXXXXXXXXXXXXXXXXXXXXX" https://192.168.13.13/api/v2/cmdb/firewall/address/ -b cookie.txt --insecure --verbose
(the CSRFTOKEN value is redacted, but you get the idea...)
I've tried using HttpWebRequest instead of RestSharp, tried using a CookieContainer instead of adding them manually, with the same results every time.
Did anyone else have a similar issue?

I'm playing with the FortiOS 5.6.5 Rest API. I'm working with Powershell-which can include C# libraries. The server gives you the value as a Set-Cookie value when you authenticate, but you do not send it back as a cookie. You add the X-CSRFTOKEN as a request header. The value is not a cookie. Also, I found that Powershell added quotes to the string in my case, and removing the quotes fixed the issue for me. Another thing to note-if you have the wrong path - ie, forget to add the monitor api/cmdb path, then it may return a 403 error even if the token is correct.

Posting Json string to web api c#

I'm quite new to handling json data and web apis but I'm currently creating an application to further my knowledge on them.
At the moment I can do get requests and these work fine however I'm having issues with posts. I'm trying to post json data to Jira Confluence to create a new page.
On https://developer.atlassian.com/confdev/confluence-server-rest-api/confluence-rest-api-examples it gives the below code to make a curl request
curl -u admin:admin -X POST -H 'Content-Type: application/json' -d'{"type":"page","title":"new page",
"ancestors":[{"id":456}], "space":{"key":"TST"},"body":{"storage":{"value":
"<p>This is a new page</p>","representation":"storage"}}}'
http://localhost:8080/confluence/rest/api/content/ | python -mjson.tool
I am currently using the below code and it comes back with a status 200 but I don't see the created page on confluence. I was wondering if anyone could help me out
HttpClient _webRequest = new HttpClient();
byte[] cred = UTF8Encoding.UTF8.GetBytes(credentials);
_webRequest.DefaultRequestHeaders.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("Basic", Convert.ToBase64String(cred));
_webRequest.DefaultRequestHeaders.Accept.Add(new System.Net.Http.Headers.MediaTypeWithQualityHeaderValue("application/json"));
string response = "{\"type\":\"page\",\"title\":\"new page\",\"ancestors\":[{\"id\":40635756}],\"space\":{\"key\":\"VG\"},\"body\":{\"storage\":{\"value\":\"<p>This is a new page</p>\",\"representation\":\"storage\"}}}"
var content = new StringContent(lol, Encoding.UTF8, "application/json");
var result = _webRequest.PostAsync("http://jirasite/confluence/rest/api/content/", content).Result;

Your auth header looks incorrect... You are missing the whitespace after "Basic" it should be like this "Basic xxx".
Please take a look at the following document:
https://developer.atlassian.com/confdev/confluence-server-rest-api/confluence-rest-api-examples?_ga=2.72183699.1804458933.1496916716-1816616270.1496916716#ConfluenceRESTAPIExamples-Createanewpage
Regards
Craig

c# - curl equivalent for multipart form data post request

I'm making a call to third-party api. Here's the third-party api info and what they expect:
POST /api/ HTTP/1.1
Host: testurl.com
Content-Type: multipart/form-data
curl https://testurl.com/api \
-H "Content-Type: multipart/form-data" \
-F "document[description]=meeting notes" \
-F "document[matter][id]=123" \
-F "document[document_category][name]=Offers" \
-F "document_version[last_modified_at]=2013-12-03T23:35:32+00:00" \
-F "document_version[uploaded_data]=#test.txt"
I need to write a c# equivalent post method to send these info. I have taken care of the header in the curl call, but I'm not sure on the rest of the form-data. For instance, the "document" and "document_version" along with their respective attributes (or whatever they are), how do I pass those info along?
Here's what I found: http://www.briangrinstead.com/blog/multipart-form-post-in-c
I did exactly what's done in that link, but got back Bad Request error. More specific error:
{"error":"api error","message":"undefined method `key?' for nil:NilClass"}
I have no idea what's going on in the third-api so I don't know what this error means. Also, I'm trying to post pdf doc.

You can use the HttpClient
var client = new HttpClient();
var image = File.ReadAllBytes("c:\\test.png");
var formData = new MultipartFormDataContent();
formData.Add(new StreamContent(new MemoryStream(image)), "name","fileName.png");
formData.Add(new StringContent("content"), "name");
var response = client.PostAsync("http://localhost:5001/api/someMethod", formData).Result;
if (!response.IsSuccessStatusCode)
{
Console.WriteLine(response.StatusCode);
}
else
{
var content = response.Content.ReadAsStringAsync().GetAwaiter().GetResult();
Console.WriteLine(content);
}
This works good for me.