Canon C50FSi Network Video Recorder VK-64/VK-16 Administrator's Manual - Page 275

Messages List Codes Error Messages 503 Service Unavailable 504 Gateway Time-out Description This occurs when the camera server is temporarily unable to process requests due to server overload (excessive requests from multiple clients), an uncompleted start-up process on the camera server, or other reasons. This is recorded when the proxy server returned an HTTP 503 error (which occurs when the proxy server failed to connect to the camera server). This is recorded when the proxy server returned an HTTP 504 error (which occurs when the proxy server could not receive a reply from the upper proxy). Wininet Error Codes Codes 12002 12005 12007 12017 12029 12030 12031 Error Messages The request has timed out. The URL is invalid. The server name could not be resolved. The operation was canceled, usually because the handle on which the request was operating was closed before the operation completed. The attempt to connect to the server failed. The connection with the server has been terminated. The connection with the server has been reset. Description A request timeout occurred. It indicates that connection or request transmission failed. The URL is incorrect (Normally, this does not occur, however, it may occur when an attempt is made to connect to an unsupported camera server). The host name could not be resolved (This error indicates when a host name that is not registered in DNS is specified or that a problem occurred in communication with DNS). The communication was canceled (This error is not a problem, it may be recording during normal operation). The connection to the camera server failed (Normally 12002 is recorded). The connection to the camera server has been disconnected (The disconnect process itself is recorded when it is executed normally). The connection to the camera server has been disconnected forcibly. Troubleshooting 9-33