Testing PayPal with Rails
问题 I need to test a new PayPal integration with my application. I use PayPal sandbox in development env. In order to test the entire interface, I figured out that ngrok might solve the problem of messages from PayPal. I installed ngrok using apt-get install ngrok-client on my new Ubuntu 16.04 instalation. When I try to run it ( ngrok 3000 , ngrok 80 ) I get the following error: Invalid address server_addr 'ngrokd.ngrok.com:443': lookup ngrokd.ngrok.com: no such host Any idea? Any other solution