The TCP and UDP functions can return the following error codes.
| Code | Name | Description |
|---|---|---|
| 53 | Manager call not supported. | |
| 54 | ncBadAddressErr | The network address is ill-formed. |
| 55 | ncInProgressErr | The network operation is in progress. |
| 56 | ncTimeOutErr | The network operation exceeded the user-specified or system time limit. |
| 57 | ncBusyErr | The network connection is busy. |
| 58 | ncNotSupportedErr | The network function is not supported. |
| 59 | ncNetErr | The network is down, unreachable, or has been reset. |
| 60 | ncAddrInUseErr | The specified network address is currently in use. |
| 61 | ncSysOutOfMem | The system could not allocate the necessary memory. |
| 62 | ncSysConnAbortedErr | The system caused the network connection to be aborted. |
| 63 | ncConnRefusedErr | The network connection was refused by the server. |
| 64 | ncNotConnectedErr | The network connection is not established. |
| 65 | ncAlreadyConnectedErr | The network connection is already established. |
| 66 | ncConnClosedErr | The network connection was closed by the peer. |