JMeter Basic Authentication

Question

I am trying to imply the basic authentication process for a web service using JMeter. But everytime it throws out an error 401:Unauthorized. I tried using the HTTP Header manager to add a header Authorization and value to it. Still it does not work. I have also tried using the HTTP Authorization manager. Still no luck. Can someone help.

Answer 1

I've found through debugging requests coming in from JMeter that the HTTP Authorization Manager module doesn't encode the username and password correctly. It puts a newline character after the username.

To run a JMeter test against a Basic Auth protected endpoint, include the HTTP Header Manager and add the Basic Auth header yourself:

Manually Encoding Credentials

• From MacOS or Linux:

  echo -n "username:password" | base64

• From Windows:

  Go here and encode your "username:password" string

Adding the Authorization Header

In the HTTP Header Manager, add an entry with the name "Authorization" and the value "Basic [encoded credentials from above]"