# eXtremeDB Network Error Codes

> The following error codes indicate non-fatal error conditions that might be returned by the eXtremeDB runtime while processing Network operations:

> Mnemonic Constant Name
> Value
> Meaning
> MCO_E_NW
> 300
> Network Error Code base
> MCO_E_NW_FATAL
> 301
> Fatal error
> MCO_E_NW_NOTSUPP
> 302
> Network is not supported
> MCO_E_NW_CLOSE_CHANNEL
> 303
> Error closing network channel
> MCO_E_NW_BUSY
> 304
> Network busy (blocked by another listener?)
> MCO_E_NW_ACCEPT
> 305
> Accept failed
> MCO_E_NW_TIMEOUT
> 306
> Timeout exceeded
> MCO_E_NW_INVADDR
> 307
> Invalid address specified
> MCO_E_NW_NOMEM
> 308
> Host name is too long
> MCO_E_NW_CONNECT
> 309
> Connect failed
> MCO_E_NW_SENDERR
> 310
> Send failed
> MCO_E_NW_RECVERR
> 311
> Receive failed
> MCO_E_NW_CLOSED
> 312
> Connection was closed (by the remote host)
> MCO_E_NW_HANDSHAKE
> 313
> Handshake failed
> MCO_E_NW_CLOSE_SOCKET
> 314
> Error closing socket
> MCO_E_NW_CREATEPIPE
> 315
> Error creating pipe
> MCO_E_NW_SOCKET
> 316
> Socket error
> MCO_E_NW_SOCKOPT
> 317
> `setsockopt()` error
> MCO_E_NW_BIND
> 318
> Bind error
> MCO_E_NW_SOCKIOCTL
> 319
> `ioctlsocket()` error
> MCO_E_NW_MAGIC
> 320
> Invalid magic value
> MCO_E_NW_INVMSGPARAM
> 321
> Invalid parameter for a message
> MCO_E_NW_WRONGSEQ
> 322
> Wrong sequence number for message
> MCO_E_NWMCAST_CLOSE_SOCKET
> 323
> Unable to close multicast socket
> MCO_E_NWMCAST_SOCKET
> 324
> Multicast socket error
> MCO_E_NWMCAST_SOCKOPT
> 325
> Unable to set multicast socket option
> MCO_E_NWMCAST_RECV
> 326
> Unable to receive data from multicast socket
> MCO_E_NWMCAST_BIND
> 327
> Unable to bind multicast socket
> MCO_E_NWMCAST_NBIO
> 328
> Unable to ioctl multicast socket
> MCO_E_NW_KILLED_BY_REPLICA
> 329
> The master connection was killed by replica
> MCO_E_NW_WOULDBLOCK
> 330
> Send / recv operation would block
> MCO_E_NW_SELECT
> 331
> Send / recv operation would block
> MCO_E_NW_INVALID_PARAMETER
> 332
> Invalid parameter
> Invalid return codes
> 333-399
> Values between 333 and 399 are not valid eXtremeDB return codes

> Related Topics