UDT Reference: Error Codes

### UDT Error Codes List

All UDT API will return an error upon a failed operation. Particularly, UDT defines UDT::INVALID_SOCK and UDT::ERROR as error returned values. (several routines return false as error value.) Application should check the return value against these two constants.

Error Name | Error Code | Comment
SUCCESS | 0 | success operation.
ECONNSETUP | 1000 | connection setup failure.
ENOSERVER | 1001 | server does not exist.
ECONNREJ | 1002 | connection request was rejected by server.
ESOCKFAIL | 1003 | could not create/configure UDP socket.
ESECFAIL | 1004 | connection request was aborted due to security reasons.
ECONNFAIL | 2000 | connection failure.
ECONNLOST | 2001 | connection was broken.
ENOCONN | 2002 | connection does not exist.
ERESOURCE | 3000 | system resource failure.
ETHREAD | 3001 | could not create new thread.
ENOBUF | 3002 | no memory space.
EFILE | 4000 | file access error.
EINVRDOFF | 4001 | invalid read offset.
ERDPERM | 4002 | no read permission.
EINVWROFF | 4003 | invalid write offset.
EWRPERM | 4004 | no write permission.
EINVOP | 5000 | operation not supported.
EBOUNDSOCK | 5001 | cannot execute the operation on a bound socket.
ECONNSOCK | 5002 | cannot execute the operation on a connected socket.
EINVPARAM | 5003 | bad parameters.
EINVSOCK | 5004 | invalid UDT socket.
EUNBOUNDSOCK | 5005 | cannot listen on unbound socket.
ENOLISTEN | 5006 | (accept) socket is not in listening state.
ERDVNOSERV | 5007 | rendezvous connection process does not allow listen and accept call.
ERDVUNBOUND | 5008 | rendezvous connection setup is enabled but bind has not been called before connect.
ESTREAMILL | 5009 | operation not supported in SOCK_STREAM mode.
EDGRAMILL | 5010 | operation not supported in SOCK_DGRAM mode.
EDUPLISTEN | 5011 | another socket is already listening on the same UDP port.
ELARGEMSG | 5012 | message is too large to be hold in the sending buffer.
EASYNCFAIL | 6000 | non-blocking call failure.
EASYNCSND | 6001 | no buffer available for sending.
EASYNCRCV | 6002 | no data available for read.
ETIMEOUT | 6003 | timeout before operation completes.
EPEERERR | 7000 | Error has happened at the peer side.

##### See Also

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