I created service bus with the queue, but when I try to test via POSTMAN I am getting 401

Question

Hi I am using POST method to send message to service bus queue using Azure Active Directory (Azure AD) JSON Web Token (JWT), I am able to generate the successful authenticate token but when I try to hit the post api in Postman using that token getting 401 error. http{s}://{serviceNamespace}.servicebus.windows.net/{queuePath|topicPath}/messages|HTTP/1.1 Please do the needful. Thanks Balaji

Answer 1

@Balaji Ravikumar I have reviewed and tested the same at my end using powershell script and I don't see any issue at my end.

$tenantId = "yourtenantid"
$clientId = "yourclientid"
$clientSecret = "yoruSecret"
$serviceBusNamespace = "namespacename"
$messageBody = "test"
$resource = "https://servicebus.azure.net/"
$queueName = "test"

$body = @{
    grant_type = "client_credentials"
    client_id = $clientId
    client_secret = $clientSecret
    resource = $resource
}

$tokenEndpoint = "https://login.microsoftonline.com/$tenantId/oauth2/token"
$token = Invoke-RestMethod -Method Post -Uri $tokenEndpoint -Body $body

$accessToken = $token.access_token


$headers = @{
    "Authorization" = "Bearer $accessToken"
    "Content-Type" = "application/json"
}

$body = @{
    "Body" = $messageBody
} | ConvertTo-Json

$url = "https://$serviceBusNamespace.servicebus.windows.net/$queueName/messages?api-version=2017-04"

Invoke-RestMethod -Method Post -Uri $url -Headers $headers -Body $body

As you are getting 401 error so I will suggest to validate this step whether you have given the right permission to your AD application. Please validate application display name matches with the role assignment that you have provided on your same service bus resource.

Validate whether you are passing the application ID, tenant ID correctly.