| Value | Meaning |
|---|---|
| unknown0 | Unknown error |
| accessDeniederr.EPERM | Firewall rules forbid connection. |
| notSocketerr.EBADF | A socket operation was attempted on a non-socket. |
| networkDownerr.ECONNABORTED | The network is not available. |
| faulterr.EFAULT | An invalid pointer address was detected by the underlying socket provider. |
| invalidArgumenterr.EINVAL | An invalid argument was supplied to a $(D_PSYMBOL Socket) member. |
| tooManyOpenSocketserr.ENFILE | The limit on the number of open sockets has been reached. |
| noBufferSpaceAvailableerr.ENOBUFS | No free buffer space is available for a Socket operation. |
| operationNotSupportederr.EOPNOTSUPP | The address family is not supported by the protocol family. |
| protocolNotSupportederr.EPROTONOSUPPORT | The protocol is not implemented or has not been configured. |
| protocolErrorerr.EPROTOTYPE | Protocol error. |
| timedOuterr.ETIMEDOUT | The connection attempt timed out, or the connected host has failed to respond. |
| socketNotSupportederr.ESOCKTNOSUPPORT | The support for the specified socket type does not exist in this address family. |
Error codes for $(D_PSYMBOL Socket).