Winsock函数返回值列表(Return Value of Winsock Function)

WSAEINTR (10004)
Interrupted Function Call — A blocking operation was cancelled.
WSAEACCESS (10013)
Permission Denied — An attempt to access a socket was forbidden by its access permissions.
WSAEFAULT (10014)
Bad Address — An invalid pointer address was specified in a function call.
WSAEINVAL (10022)
Invalid Argument — An invalid argument was passed to a function.
WSAEMFILE (10024)
Too Many Open Files — There are too many open sockets.

WSAEWOULDBLOCK (10035)
Resource Temporarily Unavailable — The specified socket operation cannot be completed immediately, but the operation should be retried later.
WSAEINPROGRESS (10036)
Operation Now in Progress — A blocking operation is currently executing.
WSAEALREADY (10037)
Operation Already in Progress — An operation was attempted on a non-binding socket that already had an operation in progress.
WSAENOTSOCK (10038)
Socket Operation on Non-Socket — An operation was attempted on something that is not a socket.
WSAEDESTADDRREQ (10039)
Destination Address Required — A required address was omitted from a socket operation.
WSAEMSGSIZE (10040)
Message Too Long — A message was sent on a datagram socket that exceeds the internal message buffer or some other limit.
WSAEPROTOTYPE (10041)
Protocol Wrong Type for Socket — A protocol was specified that is not supported by the target socket.
WSAENOPROTOOPT (10042)
Bad Protocol Option — An unknown, invalid, or unsupported protocol option or leel was specified.
WSAEPROTONOSUPPORT (10043)
Protocol Not Supported — The specified protocol is not supported or is not implemented.
WSAESOCKTNOSUPPORT (10044)
Socket Type Not Supported — The specified socket type is not supported in the address family.
WSAEOPNOTSUPP (10045)
Operation Not Supported — The specified operation is not supported by the referenced object.
WSAEPFNOSUPPORT (10046)
Protocol Family Not Supported — The specified protocol family is not supported or is not implemented.
WSAEAFNOSUPPORT (10047)
Address Family Not Supported by Protocol Family — An address incompatible with the requested network protocol was used.
WSAEADDRINUSE (10048)
Address Already in Use — An attempt to use the same IP address and port with two different sockets simultaneously was made.
WSAEADDRNOTAVAIL (10049)
Cannot Assign Requested Address — The requested address is not valid (given the context of the function).
WSAENETDOWN (10050)
Network is Down — A socket operation encountered a network that is down.
WSAENETUNREACH (10051)
Network is Unreachable — A socket operation encountered an unreachable network.
WSAENETRESET (10052)
Network Dropped Connection on Reset — A connection was broken due to "keep-alive" activity detecting a failure.
WSAECONNABORTED (10053)
Software Caused Connection Abort — A connection was aborted by software on the host computer.
WSAECONNRESET (10054)
Connection Reset by Peer — A connection was forcibly closed by the remote host.
WSAENOBUFS (10055)
No Buffer Space Available — A socket operation could not be performed because the system ran out of buffer space or the queue was full.
WSAEISCONN (10056)
Socket is Already Connected — A connect request was made on a socket that is already connected.
WSAENOTCONN (10057)
Socket is Not Connected — An attempt to send or receive data failed because the socket is not connected.
WSAESHUTDOWN (10058)
Cannot Send After Socket Shutdown — An attempt to send or receive data failed because the socket has already been shut down.
WSAETIMEDOUT (10060)
Connection Timed Out — The remote host failed to respond within the timeout period.
WSAECONNREFUSED (10061)
Connection Refused — The target machine actively refused the attempt to connect to it.
WSAEHOSTDOWN (10064)
Host is Down — The destination host is down.
WSAEHOSTUNREACH (10065)
No Route to Host — The destination host is unreachable.
WSAEPROCLIM (10067)
Too Many Processes — The Winsock implementation has exceeded the number of applications that can use it simultaneously.
WSASYSNOTREADY (10091)
Network Subsystem is Unavailable — The underlying system to provide network services is unavailable.
WSAVERNOTSUPPORTED (10092)
winsock.dll Version Out of Range — The Winsock implementation does not support the requested Winsock version.
WSANOTINITIALIZED (10093)
Successful WSAStartup Not Yet Performed — The calling application has not successfully called WSAStartup to initiate a Winsock session.
WSAEDISCON (10094)
Graceful Shutdown in Progress — The remote party has initiated a graceful shutdown sequence.
WSATYPE_NOT_FOUND (10109)
Class Type Not Found — The specified class was not found.
WSAHOST_NOT_FOUND (11001)
Host Not Found — No network host matching the hostname or address was found.
WSATRY_AGAIN (11002)
Non-Authoritative Host Not Found — A temporary error while resolving a hostname occured, and should be retried later.
WSANO_RECOVERY (11003)
This is a Non-Recoverable Error — Some sort of non-recoverable error occured during a database lookup.
WSANO_DATA (11004)
Valid Name, No Data Record of Requested Type — The requested name is valid and was found, but does not have the associated data requested