cURL is one of the simplest ways to test proxy connections. Before officially connecting to a browser, fingerprint browser or script, it is recommended to use cURL to do a minimum test.

HTTP example

curl -x username:password@host:port http://ipinfo.io/json

With protocol writing method

curl -x http://username:password@host:port http://ipinfo.io/json

Test steps

1. Copy the host, port, username and password from the background.
2. Replace placeholder content in the command.
3. Executed from the command line.
4. Check whether the returned IP is different from the real IP of the machine.
5. If it fails, check the authentication, host, port and protocol based on the error message. The

Passed criteria

• command can return results normally.
• The egress IP has changed.
• The region and background selection are generally consistent.
• When repeated requests are made, the IP switching of the dynamic proxy complies with the selected time limit.