Getting response error (400) when contacting REST API through JIRA API TOKEN

[Suhas Shirsat]

I am trying to make REST API GET call on JIRA cloud using API tokens. I tried different codes but I am keep getting the same 400 error. In browser session API call works fine. 

Following is my C# code , can someone tell me what I am doing wrong.

var url = new Uri("https://mysite.com");

var httpClient = new HttpClient(new HttpClientHandler(){})
{
BaseAddress = url,
Timeout = new TimeSpan(0, 2, 0)
};

httpClient.DefaultRequestHeaders.Add("ContentType", "application/json");
httpClient.DefaultRequestHeaders.Add("Authorization", "Basic " + GetEncodedCredentials());

var result = await httpClient.GetAsync(url);

if (result.IsSuccessStatusCode)
{
var response = await result.Content.ReadAsStringAsync();
}

---------------

private string GetEncodedCredentials()
{
string mergedCredentials = string.Format("{0}:{1}", "myid@abc.com", "API TOKEN");
byte[] byteCredentials = UTF8Encoding.UTF8.GetBytes(mergedCredentials);
return Convert.ToBase64String(byteCredentials);
}

[Prince Nyeche]

Hi @Suhas Shirsat 

I'm not particularly familiar with C# but if you're connecting to Jira Cloud, you have to specify the endpoint literally. e.g. "/rest/api/3/project"

[Suhas Shirsat]

Hi @Prince Nyeche , yes I have already done that, I havent mentioned it here.

I have done something like following,

https://mysite.com/rest/api/3/issue/10662