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http response is 500 on code parameter request

This is a http request to the https://auth.monday.com/oauth2/authorize endpoint on asp.net 6. It should get the code parameter from that endpoint but it's returning a 500 response with html for some reason. This is part of my code grant flow because the API has oauth2.0.
public async Task<string> GetCode(string clientId, string redirect_uri)
{
HttpClient client = new HttpClient();
HttpRequestMessage request = new HttpRequestMessage(HttpMethod.Get, $"https://auth.monday.com/oauth2/authorize{clientId}");
string json =
JsonSerializer.Serialize(
new
{
query = "code"
}
);
request.Content = new StringContent(json,
Encoding.UTF8, "application/json");
var response = await client.SendAsync(request);
var responseText = await response.Content.ReadAsStringAsync();
return responseText;
}

Are you missing a / in your endpoint by any chance? Should it not be https://auth.monday.com/oauth2/authorize/{clientId}?

HTTP 500 is an internal server error, this means that the server was unable to handle your request properly. If you have access to the server then I would look there as to why it was unable to handle your request. I don't see anything wrong in your request.

Calling Get Request with Json Body using httpclient

I came with an issue this morning where the Api which I am calling is a Get Method but to get Get the Data from it I had to send the json body this is working good when I am testing it in the post man but I am not able to implement it in my project where I am calling this using HttpClient
here is the screenshot of post
It also have a bearer token which I pass in Authorization
Now when I am try to implement this at client side here is my code
var stringPayload = JsonConvert.SerializeObject(json);
var client = new HttpClient();
var request = new HttpRequestMessage
{
Method = HttpMethod.Get,
RequestUri = new Uri("https://myapiendpoint/serviceability/"),
Content = new StringContent(stringPayload, Encoding.UTF8, "application/json"),
};
var response = await client.SendAsync(request).ConfigureAwait(false);
response.EnsureSuccessStatusCode();
var responseBody = await response.Content.ReadAsStringAsync().ConfigureAwait(false);
when I call this method using this code I get
System.Net.HttpStatusCode.MethodNotAllowed - Status code 405
I also tried changing this line
Method = HttpMethod.Get to Method = HttpMethod.Post
but still getting same error
I know this is bad implementation at API Side the request ideally should be POST but changing this is not in my hand and hence need to find the solution

almost search all over and trying all the variant of using GET Method finally the solution which worked for me in this case was this
var client = new HttpClient();
client.BaseAddress = new Uri("https://baseApi/");
client.DefaultRequestHeaders.Accept.Add(
new MediaTypeWithQualityHeaderValue("application/json"));
client.DefaultRequestHeaders.Add("Authorization", string.Format("Bearer {0}", token));
var query = new Dictionary<string, string>
{
["pickup_postcode"] = 400703,
["delivery_postcode"] = 421204,
["cod"] = "0",
["weight"] = 2,
};
var url = "methodurl";
var response = await client.GetAsync(QueryHelpers.AddQueryString(url, query));
var responseBody = await response.Content.ReadAsStringAsync().ConfigureAwait(false);
return JsonConvert.DeserializeObject<MyModel>(responseBody);
Got QueryHelpers from Microsoft.AspNetCore.WebUtilities package

Accessing TM1 Cognos REST API through C# , when server hosted with Integrated mode 5 (CAMPassport)

I am trying to call the REST API exposed from IBM TM1 Cognos. Using the HttpWebRequest object. Getting the 401 when i tried to pass Authorization header with base64(user:password:namespaceId).

using (var client = new HttpClient())
{
var plainTextBytes = System.Text.Encoding.UTF8.GetBytes("username:password:camnamespace");
var encodeData= System.Convert.ToBase64String(plainTextBytes);
client.DefaultRequestHeaders.Accept.Clear();
client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
client.DefaultRequestHeaders.Add("Authorization", "CAMNamespace "+ encodeData);
//GET Method
HttpResponseMessage response = await client.GetAsync("http://serveraddress/api/v1/Cubes");
if (response.IsSuccessStatusCode)
{
var det = await response.Content.ReadAsStringAsync();
}
else
{
Console.WriteLine("Internal server Error");
}
}

I think you need something like in payton: verify=False to trust the certificate of response.

Add authorization permanent token header to POST JSON using HttpClient in REST API

I am trying to POST a JSON with HhttpClient using a permanent token authorization, but I always get an error 401 Unauthorized code:
public static async Task<Uri> CrearitemAsync(Item item)
{
using (var client = new HttpClient())
{
client.BaseAddress = new Uri(BaseUri);
client.DefaultRequestHeaders.Accept.Clear();
client.DefaultRequestHeaders.Authorization =
new AuthenticationHeaderValue("OAuth", AuthToken);
HttpResponseMessage response = await client.PostAsJsonAsync(
"items/" + IdProvider, JsonConvert.SerializeObject(item));
response.EnsureSuccessStatusCode();
return response.Headers.Location;
}
}
I also tried this:
client.DefaultRequestHeaders.Add("Authorization", "Bearer " + AuthToken);
The token seems to be fine. It is an alphanumeric string all lower case. Is this the correct way to use a permanent token?
update The key i have to use for the header is: IDENTITY_KEY
but still failing

finally it worked with Add.. had to use this 'key' value rather than authorization in the header:
client.DefaultRequestHeaders.Add("IDENTITY_KEY", AuthToken);

REST JSON GET - 400 Bad Request

I am working with the Basecamp API which is a REST (JSON) API using basic HTTP authentication over HTTPS.
This should be a GET request but when I run my code using GET I am receiving:
Cannot send a content-body with this verb-type
When I run it as a POST, I receive:
{"status":"400","error":"Bad Request"}
Does anyone know why this may be occurring?
using (var httpClient = new HttpClient()) {
string userName = "someone#someone.com";
string password = "somepassword";
var credentials = Convert.ToBase64String(Encoding.ASCII.GetBytes(string.Format("{0}:{1}", userName, password)));
httpClient.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Basic", credentials);
HttpRequestMessage requestMessage = new HttpRequestMessage(HttpMethod.Post, "https://correctUrlHere);
requestMessage.Headers.Add("User-Agent", "TheProject (someone#someone.com)");
requestMessage.Content = new StringContent(string.Empty, Encoding.UTF8, "application/json");
var response = await httpClient.SendAsync(requestMessage);
var responseContent = await response.Content.ReadAsStringAsync();
Console.WriteLine(responseContent);
}
In this code I obviously swapped out the username, password, project name, and URL but in the actual code they are all correct.

GET requests must pass their parameters as url query and not as request body.
http://example.com?p1=1&p2=helloworld
If you don't have any content, as your example suggests, omit setting it on the request.
The BadRequest result indicates some error with your payload (again: content seems to be empty).