I have been using OAuth PHP Library for Constant Contact Auth. But i am getting HTTP Status 401 - Invalid signature for signature method HMAC-SHA1. Any help will be appreciated.
Thanks In Advance
Unfortunately I would need to see the entire page, and where the error is being thrown in order to really troubleshoot this. If you can either attach the relavant code or send it to our webservices support team I'd be happy to take a look and see if I can pinpoint the issue.