C# Attempted API Calls all receive 400 Bad Request

Platform API OAuth
1

I am very new to Genesys and the API. I have the following below code that I am able to use to authenticate and return an access token but when I attempt to call any of several endpoints I keep getting the following:

{StatusCode: 400, ReasonPhrase: 'Bad Request', Version: 1.1, Content: System.Net.Http.StreamContent, Headers:
{
  Connection: keep-alive
  Inin-Correlation-Id: 59151167-f365-4745-7f1c-52af1d87bfd4
  Strict-Transport-Security: max-age=31536000
  Vary: Accept-Encoding
  Date: Wed, 17 Jan 2024 17:58:02 GMT
  Content-Length: 28
  Content-Type: application/json
}}

Here is my C# Code to make the request to get the access token and then use that token to make a call to the API:

 private void button1_Click(object sender, EventArgs e)
        {
            var token = this.GetAuthenticationToken();
             GetTokenFromCode(token);
        }

private string GetAuthenticationToken()
        {
            //Local Variable Declaration
            var returnValue = string.Empty;
            var jsonStr = string.Empty;
            var byteArray = default(byte[]);
            var dataStream = default(System.IO.Stream);
            var response = default(WebResponse);
            var request = default(WebRequest);

            //specify to use TLS 1.2 as default connection
            System.Net.ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12 | SecurityProtocolType.Tls11 | SecurityProtocolType.Tls;

            //Init the Web Request to the authentication service
            request = WebRequest.Create("https://login.usw2.pure.cloud/oauth/token");
            //request = WebRequest.Create("https://login.mypurecloud.com/oauth/token");

            //Build The JSON Body
            jsonStr = "grant_type=client_credentials&client_id=<clientId>&client_secret=<secret>";

            //Convert the JSON string into a byte array
            byteArray = Encoding.UTF8.GetBytes(jsonStr);

            //Set Sender Properties
            request.Method = "POST";
            request.ContentType = "application/x-www-form-urlencoded";
            request.CachePolicy = new System.Net.Cache.RequestCachePolicy(System.Net.Cache.RequestCacheLevel.NoCacheNoStore);

            //Init the request stream
            dataStream = request.GetRequestStream();

            //Write the JSON data to the server
            dataStream.Write(byteArray, 0, byteArray.Length);

            //Retrieve the response
            response = request.GetResponse();

            //Read the response
            using (var reader = new System.IO.StreamReader(response.GetResponseStream()))
            {
                returnValue = reader.ReadToEnd();
            }

            if (!string.IsNullOrEmpty(returnValue))
            {
                var jsonObj = Newtonsoft.Json.Linq.JObject.Parse(returnValue);
                returnValue = jsonObj.Property("access_token").Value.ToObject<string>();
            }

            return returnValue;
        }

        private string GetTokenFromCode(string code)
        {
            var client = new HttpClient();
            client.DefaultRequestHeaders.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("Bearer", code);
            var response = client.GetAsync($"https://api.usw2.pure.cloud/api/v2/users/me").Result;

            return string.Empty;
        }

Can anyone please help me understand what I am doing wrong and how to make a proper call to the API using the retrieved access token?

Thanks.

2

What's the response body payload? There's usually details in it that tell you what was wrong with your request.

You might consider using the .NET SDK. It has helpers for auth and provides structured methods for each API endpoint. https://developer.genesys.cloud/devapps/sdk/docexplorer/pureclouddotnet/

3

Tim,

This is all I am getting back when I look at the response object:

{StatusCode: 400, ReasonPhrase: 'Bad Request', Version: 1.1, Content: System.Net.Http.StreamContent, Headers:
{
  Connection: keep-alive
  Inin-Correlation-Id: 59151167-f365-4745-7f1c-52af1d87bfd4
  Strict-Transport-Security: max-age=31536000
  Vary: Accept-Encoding
  Date: Wed, 17 Jan 2024 17:58:02 GMT
  Content-Length: 28
  Content-Type: application/json
}}

I have looked at trying to use the SDK but I am unable to get past the Authentication with the SDK. I keep getting errors so I decided to go back to just using the standard HttpClient.

Does that help at all?

4

You need to read the stream. It's been too long since I've done .NET to tell you how to do that off the top of my head, but it should be fairly simple to read that to a string.

5

What errors specifically?

6

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