I am having problems trying to upload a file in JMeter 3.1. In the HTTP Request, I have a POST request with the "User multipart/form-data for POST" option checked. Then I have File Path, Parameter Name and MIME type set, no problems there.
The issue is that the script is working on JMeter 2.13, but it keeps failing when running either on 3.0 or 3.1. The response code is 200, but it fails on the expected text "File successfully uploaded".
The only difference between 2.13 and 3.1 is that 3.1 adds the charset value on the Conent-Type Request Header (please find attached screenshots).
Thanks in advance!