Errors

Each function or method activated in the program returns an error code. Below see the list of more frequent errors which can help you to detect the problem:

Error Code Description
0Succeeded.
1Unknown error.
-1Non-supported protocol.
-2Error initializing connection. It can happen when trying to create an object IWialonConnection repeatedly.
-3Invalid URL address.
-5Error to resolve proxy server name.
-6Error to resolve server name.
-7Error connecting to the given address. It can happen when firewall or antivirus program are set incorrectly.
-9Access to server denied.
-18Insufficient data. It is possible if connection to server is broken or in case of server abnormal termination.
-22Http error.
-27Internal error while executing query.
-28Execution timeout is exceeded.
-34POST query error.
-35Error connecting through a protected connection (SSL).
-36It is impossible to continue loading. Connection may be broken.
-47Too many redirections.
-51Certificate error.
-55Data communication error.
-56Data acquisition error.
-80Incorrect SSL connection termination.
-81The socket is not ready to data sending or acquisition. Maybe, all sockets are busy – try to upload unusable applications.
-95Wialon server error. Use the function GetLastError to retrieve the error text.
-96Error when operating file input/output. It can happen if the user who is executing the program does not have enough access to read and record data in the temporary folder.
-97Error processing data. Maybe, the server returned invalid data or was abnormally terminated while executing the inquiry.
-98Error processing data. Maybe, the server returned nothing or was abnormally terminated while executing the inquiry.
-99Inquiry to the server is impossible because of incorrect product settings. Please, reinstall ActiveX.
-300Error when parsing data received from the server.
-301Error when parsing data received from the server.
-302Error when parsing data received from the server.
-303Error when parsing data received from the server.
-304Error while creating objects. It may be caused by memory lack or if you inquire too many messages. Close other applications and retry.
-305Not enough memory to unpack data. Close other applications and retry.
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