UDP Support Library Error Codes
The UDP Support Library functions return negative values when they detect errors. The following table lists the error codes, defined constants, and error messages associated with functions in the LabWindows/CVI UDP Support Library.
Use the GetUDPErrorString function to convert the error code, returned in the status parameter of UDP Support Library functions, into meaningful error messages.
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Note For UDPRead and UDPWrite, the return value indicates the number of bytes transferred if the functions were successful. |
Error codes are defined in the cvi\include\udpsupp.h file.
| Value | Error Code | Error Message |
| 0 | kUDP_NoError | No error. |
| -6800 | kUDP_InvalidChannel | Invalid channel. |
| -6801 | kUDP_InvalidPortNumber | Invalid port number. |
| -6802 | kUDP_InvalidAddress | Invalid address. |
| -6803 | kUDP_InvalidWriteSize | The write size specified exceeds the maximum datagram size on this platform. |
| -6804 | kUDP_InvalidArgument | Invalid argument passed. |
| -6805 | kUDP_NullPointer | Null pointer passed when a non-null pointer was expected. |
| -6806 | kUDP_InvalidAttribute | Invalid attribute. |
| -6807 | kUDP_InvalidAttributeValue | Invalid attribute value. |
| -6808 | kUDP_ReadTimeout | Timeout expired. |
| -6809 | kUDP_DataLost | The received data was too large for the buffer. Some data was lost. |
| -6810 | kUDP_ChannelClosed | The channel has been disposed. |
| -6811 | kUDP_PortInUse | The port has already been reserved for use on this interface. |
| -6812 | kUDP_GeneralNetworkError | A network error occurred. |
| -6813 | kUDP_HostAddressNotFound | Host address was not found. |
| -6814 | kUDP_InvalidMulticastAddress | Invalid multicast address. Valid multicast addresses range from 244.0.0.0 to 239.255.255.255. |
| -6815 | kUDP_AlreadySubscribedOnInterface | This port or another port on the same interface is already subscribed to that multicast group. |
| -6816 | kUDP_AlreadySubscribedToSource | The port is already subscribed to that source for the multicast group. |
| -6817 | kUDP_NotSubscribed | The port is not subscribed to the multicast group. |
| -6818 | kUDP_NotSubscribedToSource | The port is not subscribed to that source for the multicast group. |
| -6819 | kUDP_WinsockUnavailable | The Windows Sockets library could not be loaded. |
| -6820 | kUDP_LibraryInitializationFailure | Failed to initialize the library. |
| -6821 | kUDP_LibraryShuttingDown | Library is shutting down. |
| -6822 | kUDP_UnexpectedWinsockError | A Windows Sockets function call returned an unexpected error. |
| -6823 | kUDP_NotSupportedOnPlatform | The operation is not supported on this platform. |
| -6824 | kUDP_SystemError | General system error. |
| -6825 | kUDP_OutOfMemory | Out of memory. |
| -6826 | kUDP_OutOfSystemResources | Out of system resources. |
| -6827 | kUDP_InternalError | Internal error. |
| -6828 | kUDP_ResourceBusy | A resource is busy. |