Networkexit code > 0

curl: (7) Failed to connect: Connection refused

$curl: (7) Failed to connect to localhost port 8080: Connection refused

Analysis

The target host exists but is not listening on the specified port, or a firewall is actively rejecting the connection.

Common Triggers

  • The service (web server, API) is not running.
  • The service is listening on a different port.

Debug Checks

  • $Verify the service is running on the target machine.
  • $Check if you are using the correct port.

Resolution

1
Start the target service.
2
Ensure the service is listening on 0.0.0.0 or the correct interface (not just 127.0.0.1 if connecting remotely).