Canon VB-C300 Administrator's Manual page 275

Codes
503 Service Unavailable
504 Gateway Time-out
Wininet Error Codes
Codes
12002 The request has timed out.
12005 The URL is invalid.
12007 The server name could not be resolved.
The operation was canceled, usually because
12017 the handle on which the request was operating
was closed before the operation completed.
12029 The attempt to connect to the server failed.
The connection with the server has been
12030
terminated.
12031 The connection with the server has been reset.
Error Messages
Error Messages
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).
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.
Messages List
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