Article
11/18/2011

SocketError Enumeration

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Defines error codes for the Socket class.

Namespace: System.Net.Sockets
Assembly: System.Net (in System.Net.dll)

Syntax

'Declaration
Public Enumeration SocketError

public enum SocketError

Members

	Member name	Description
	Success	The Socket operation succeeded.
	SocketError	An unspecified Socket error has occurred.
	Interrupted	A blocking Socket call was canceled.
	AccessDenied	An attempt was made to access a Socket in a way that is forbidden by its access permissions.
	Fault	An invalid pointer address was detected by the underlying socket provider.
	InvalidArgument	An invalid argument was supplied to a Socket member.
	TooManyOpenSockets	There are too many open sockets in the underlying socket provider.
	WouldBlock	An operation on a nonblocking socket cannot be completed immediately.
	InProgress	A blocking operation is in progress.
	AlreadyInProgress	The nonblocking Socket already has an operation in progress.
	NotSocket	A Socket operation was attempted on a non-socket.
	DestinationAddressRequired	A required address was omitted from an operation on a Socket.
	MessageSize	The datagram is too long.
	ProtocolType	The protocol type is incorrect for this Socket.
	ProtocolOption	An unknown, invalid, or unsupported option or level was used with a Socket.
	ProtocolNotSupported	The protocol is not implemented or has not been configured.
	SocketNotSupported	The support for the specified socket type does not exist in this address family.
	OperationNotSupported	The address family is not supported by the protocol family.
	ProtocolFamilyNotSupported	The protocol family is not implemented or has not been configured.
	AddressFamilyNotSupported	The address family specified is not supported. This error is returned if the IPv6 address family was specified and the IPv6 stack is not installed on the local machine. This error is returned if the IPv4 address family was specified and the IPv4 stack is not installed on the local machine.
	AddressAlreadyInUse	Only one use of an address is normally permitted.
	AddressNotAvailable	The selected IP address is not valid in this context.
	NetworkDown	The network is not available.
	NetworkUnreachable	No route to the remote host exists.
	NetworkReset	The application tried to set an option on a connection that has already timed out.
	ConnectionAborted	The connection was aborted by the .NET Framework or the underlying socket provider.
	ConnectionReset	The connection was reset by the remote peer.
	NoBufferSpaceAvailable	No free buffer space is available for a Socket operation.
	IsConnected	The Socket is already connected.
	NotConnected	The application tried to send or receive data, and the Socket is not connected.
	Shutdown	A request to send or receive data was disallowed because the Socket has already been closed.
	TimedOut	The connection attempt timed out, or the connected host has failed to respond.
	ConnectionRefused	The remote host is actively refusing a connection.
	HostDown	The operation failed because the remote host is down.
	HostUnreachable	There is no network route to the specified host.
	ProcessLimit	Too many processes are using the underlying socket provider.
	SystemNotReady	The network subsystem is unavailable.
	VersionNotSupported	The version of the underlying socket provider is out of range.
	NotInitialized	The underlying socket provider has not been initialized.
	Disconnecting	A graceful shutdown is in progress.
	TypeNotFound	The specified class was not found.
	HostNotFound	No such host is known. The name is not an official host name or alias.
	TryAgain	The name of the host could not be resolved. Try again later.
	NoRecovery	The error is unrecoverable or the requested database cannot be located.
	NoData	The requested name or IP address was not found on the name server.
	IOPending	The application has initiated an overlapped operation that cannot be completed immediately.
	OperationAborted	The overlapped operation was aborted due to the closure of the Socket.

Remarks

Most of these errors are returned by the underlying socket provider.

Version Information

Silverlight

Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1

Platforms

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.