Device Status Code Series 800: Web Server Error

Error Type 800:
Device not accepting TCP connections


Description

If Keynote Red Alert is unsuccessful in opening a TCP connection to the device associated with the Keynote Red Alert Transaction, then Error Type 800 is reported to you.

Note: This error condition is only related to devices with Keynote Red Alert Transaction.


Summary

Error Type 800 means that attempt to open a TCP connection to your device was unsuccessful. Keynote Red Alert is unable to distinguish between local and external errors on devices with Keynote Red Alert Transaction enabled.



Error Type 801:
Device not accepting TCP connections


Description

If Keynote Red Alert is unsuccessful in opening a TCP connection to a secure device, it attempts to ping the device. If the ping is successful, then Error Type 801 is reported to you.


Summary

Error Type 801 means that attempts to open a TCP connection with your device were unsuccessful; however, pinging your device was successful.



Error Type 802:
Device not accepting TCP connections


Description

If Keynote Red Alert is unsuccessful in opening a TCP connection to a secure device, and if ICMP has been selected, it attempts to ping the device. (Note: if ICMP is not selected, pinging the device is not attempted.) If the ping is unsuccessful, Keynote Red Alert will attempt to ping the Pingable Sibling Device selected. If this ping is successful, then Error Type 802 is reported to you.

In order for Keynote Red Alert to monitor for this error condition, you must select and input a "Pingable Sibling Device" by providing the IP address of a device on the same local network as the device to be monitored. This "sibling" device must be capable of responding to ping requests.


Summary

Error Type 802 means that, following an unsuccessful attempt to open a TCP connection to your device, attempts to ping your device were unsuccessful; however, pinging your "Sibling Device" was successful over at least one of Keynote Red Alert's networks.



Error Type 804:
Keyword not found in first 28K, or data transmission stopped for 30 seconds


Description

This error type applies only to secure URLs and Transactions, not to other types of monitored devices.

When you add or edit a secure URL or Transaction to be monitored, you may choose to enter a keyword: either a string of up to 30 characters (for a secure URL) or a validation for content in the transaction script (for a Transaction). Keynote Red Alert will report Error Type 804 to you if this keyword is ever missing from the web page. This might happen if, for example, an HTML file becomes corrupted, or a CGI script produces incorrect output, or the expected content is not returned. For secure servers, the keyword must appear within the first 28 kilobytes of HTML and text (images are ignored). It may consist of any combination of text and/or HTML tags, including HTML comments.

Keyword monitoring is optional. There is no extra charge for this service.



Error Type 805:
Server returning HTTP error


Description

This error type applies only to secure URLs and Transactions, not to other Internet devices.

If a Web server returns an HTTP error message in response to Keynote Red Alert's request for a URL or Transaction, then Error Type 805 is reported to you, along with the HTTP status code and error message. Some common HTTP errors are:

  • 404 Not Found

  • 500 Internal Server Error

  • 503 Service Unavailable

For secure URLs: Redirection responses (those with status codes in the 300's) are not treated as errors, however Keynote Red Alert will display a warning when you register a URL for which the server returns such a response, since you may also want to monitor the URL to which the redirection points. If you have specified that a secure URL is password-protected but have chosen not to provide a username and password, then the response 401 Unauthorized is not treated as an error, since that is the normal behavior when a Web server receives an unauthorized request. However, if you have provided a username and password for the URL (see Password-Protected Device Monitoring), then the 401 Unauthorized response is treated as an Error Type 805, since this probably indicates a problem in the server's authentication system. Finally, the 401 Unauthorized response is also treated as an Error Type 805 if you have not specified that the URL is password-protected, since this probably means protection has been accidentally added to that URL. Note: If password-protection is enabled, but Keynote Red Alert does not receive an authorization challenge, an Error Type 805 will be sent.


How to Use

There is no way to deactivate monitoring for Error Type 805. To activate or deactivate notifications about this error type, follow the "Change Notification Options" link on your Account Summary Page.


Troubleshooting

If you are receiving notifications of Error Type 805 for a secure URL, but the error condition does not seem to apply, then the IP address of the Web server may have changed since you registered the URL with Keynote Red Alert. Simply follow the EDIT link for that URL on your Account Summary Page, and re-submit the form (no editing required). This will cause Keynote Red Alert to look up the server's new IP address. The IP address which Keynote Red Alert is currently using for a server appears in all email and pager notifications sent.



Error Type 807:
File size error


Description

This error type applies only to secure URLs, not to other Internet devices.

File Size Checking operates under one of two modes:

  • Notify when file size has changed

  • Notify when file size has not changed

When Keynote Red Alert retrieves an HTML page or other file from a secure Web server, it checks the file size provided in the Content-length header. Depending on the mode you have chosen, Error Type 807 is reported to you if the file size has or has not changed, as appropriate.

 

In order for Keynote Red Alert to monitor for this error condition, you must activate File Size Checking.


How to Use

See File Size Checking for instructions on how to activate or deactivate monitoring for this error condition.

To activate or deactivate notifications about this error type, follow the "Change Notification Options" link on your Account Summary Page.



Error Type 820:
Transaction Failed


Description

This error type applies only to Transactions, not to other Internet devices.

If a component of the transaction fails (for example: problems with domain name resolution, connection problems with the server, or problems accessing a step in the transaction process) an Error Type 820 is reported to you. The corresponding Error Log in your account for this device will contain the steps and failures of the transaction to assist you in troubleshooting the issue.


Troubleshooting

If you are receiving notifications of Error Type 820 for a Transaction, but the error condition does not seem to apply, you may review the issue Keynote Red Alert is experiencing by viewing the Supplementary Device Status Data for this check. Simply follow the link in the email alert or view the data in your account Error Log for the device.

All error conditions are triple-checked before notifications are sent to you.



Error Type 821:
Duration Threshold Exceeded


Description

This error type applies only to Transactions, not to other Internet devices.

In order for Keynote Red Alert to monitor for this error condition, you must activate Transaction Time Thresholds.

If the transaction process exceeds your specified maximum total transaction length (in seconds) an Error Type 821 is reported to you. This states that the total transaction time has exceeded your acceptable threshold.

Transaction Time Threshold monitoring is optional. There is no additional charge for this service.

All error conditions are triple-checked before notifications are sent to you.