RabbitMQ HTTP API returning 401 (Unauthorized) - rabbitmq

Question

Using RabbitMQ localhost and trying to use his API.. when i Call from postman it's work fine.
But i'm trying to use this API inside my app code and I'm getting 401 error:
const test = {
count: 5,
ackmode: 'ack_requeue_true',
encoding: 'auto',
truncate: 50000
}
testPost() {
fetch('http://localhost:15672/api/queues/%2F/QA.MOBILE/get', {
method: 'post',
mode: 'no-cors',
body: JSON.stringify(test),
headers: {Authorization: 'Basic ' + btoa('guest:guest'), Accept: 'application/json', 'Content-Type': 'application/json'}
});
}
POST http://localhost:15672/api/queues/%2F/QA.MOBILE/get net::ERR_ABORTED 401 (Unauthorized)
I'm missing something?
thanks

Answer 1

I just had this problem myself. Even though my issue was not CORS related, I thought I would document the issue here in case future readers have the same problem.
My issue was that I was not correctly base64ing the user credentials. From a browser you can just call any of the RabbitMQ API endpoints like this:
http://somename:somepassword#servername:15672/api/cluster-name
But when calling it programatically, you need to remove the credentials from the url and base 64 them instead.
using (var httpClient = new HttpClient())
{
using (var request = new HttpRequestMessage(new HttpMethod("GET"), "http://servername:15672/api/cluster-name"))
{
var base64authorization = Convert.ToBase64String(Encoding.ASCII.GetBytes($"somename:somepassword"));
request.Headers.TryAddWithoutValidation("Authorization", $"Basic {base64authorization}");
var response = httpClient.SendAsync(request).Result;
if (response.IsSuccessStatusCode == true)
{
string jsonContent = response.Content.ReadAsStringAsync().Result;
}
}
}
The above code is C# but it would be the same process for Java, etc.