When your website or server fails, Port Monitor will record the error that caused the downtime. These are some of the errors you can get and a brief explanation of each of them:
| Error | Explanation |
|---|---|
| 1 packets transmitted, 0 received, +1 errors, 100% packet loss | The ping sent to your server failed. Check your server firewall or connection. |
| bad URI(is not URI?) | Check your URL syntax for errors. |
| cannot interpret as DNS name: nil | Your custom service/server host is invalid. Check the entered host for your server. |
| Código de error 502 | Your website returned a 502 Bad Gateway HTTP status code. Indicates Port Monitor was able to communicate with the server, but the server was acting as a gateway or proxy and received an invalid response from the upstream server. |
| Connection refused | Your server refused to accept a connection to your custom service/website. Check your server firewall. |
| Connection reset by peer | Your server dropped the connection to your custom service/website. Check your server load when the error occurs. |
| Destination Host Unreachable | A network problem occurred. If it is not a temporal error, consult your hosting provider. Also check that you entered a public Internet host and not a private host or IP. |
| End of file reached | Your server closed the connection. Check your server load when the error occurs. |
| Execution expired | Port Monitor could not accomplish a positive check in the seconds limit configured for the target (see 'Timeout' in Advanced options). This usually means the target did not answer to the check. |
| getaddrinfo: Name or service not known | The hostname could not be resolved. |
| getaddrinfo: Name or service not known | Your custom service/server host does not exist. Check the entered host or your host DNS records. |
| getaddrinfo: No address associated with hostname | Your custom service/server host does not exist. Check the entered host or your host DNS records. |
| Hostname not know | Your custom service/server host does not exist. Check the entered host or your host DNS records. |
| HTTP redirect too deep | We detected a redirection loop in your site. |
| Network is unreachable | A network problem occurred. If it is not a temporal error, consult your hosting provider. Also check that you entered a public Internet host and not a private host or IP. |
| no address for [HOST] | Your custom service/server host does not exist. Check the entered host or your host DNS records. |
| No route to host | A network routing problem occurred. If it is not a temporal error, consult your hosting provider. Also check that you entered a public Internet host and not a private host or IP. |
| Ping: Unknown host [HOST] | Your custom service/server host does not exist. Check the entered host or your host DNS records. |
| Status code 403 | Your website returned a 403 Forbidden HTTP status code. Indicates Port Monitor was able to communicate with the server, but the server refuses to allow the requested action. |
| Status code 404 | Your website returned a 404 Not Found HTTP status code. Indicates Port Monitor was able to communicate with the server, but the server could no find what was requested. |
| Status code 500 | Your website returned a 500 Internal Server Error HTTP status code. Indicates Port Monitor was able to communicate with the server, but the server returned a generic error message. |
| Status code 503 | Your website returned a 503 Service Unavailable HTTP status code. Indicates Port Monitor was able to communicate with the server, but the server is currently unavailable (because it is overloaded or down for maintenance). |
| Status code 5xx | 5xx status codes indicate an error in your web application. |