B.2.3. Other Connectivity Errors

Unable to connect to server at server:port: Connection refused
The daemon is not running on the server or is configured not to listen, using configuration option listen_tcp or listen_tls.
End of file while reading data: nc: using stream socket: Input/output error
If you specified ssh transport, the daemon is likely not running on the server. Solve this error by verifying that the daemon is running on the server.