System 2.0.0.0 4.0.0.0 System.Enum Most of these errors are returned by the underlying socket provider. Defines error codes for the class. Field 2.0.0.0 4.0.0.0 System.Net.Sockets.SocketError An attempt was made to access a in a way that is forbidden by its access permissions. Field 2.0.0.0 4.0.0.0 System.Net.Sockets.SocketError Only one use of an address is normally permitted. Field 2.0.0.0 4.0.0.0 System.Net.Sockets.SocketError 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. Field 2.0.0.0 4.0.0.0 System.Net.Sockets.SocketError The selected IP address is not valid in this context. Field 2.0.0.0 4.0.0.0 System.Net.Sockets.SocketError The nonblocking already has an operation in progress. Field 2.0.0.0 4.0.0.0 System.Net.Sockets.SocketError The connection was aborted by the .NET Framework or the underlying socket provider. Field 2.0.0.0 4.0.0.0 System.Net.Sockets.SocketError The remote host is actively refusing a connection. Field 2.0.0.0 4.0.0.0 System.Net.Sockets.SocketError The connection was reset by the remote peer. Field 2.0.0.0 4.0.0.0 System.Net.Sockets.SocketError A required address was omitted from an operation on a . Field 2.0.0.0 4.0.0.0 System.Net.Sockets.SocketError A graceful shutdown is in progress. Field 2.0.0.0 4.0.0.0 System.Net.Sockets.SocketError An invalid pointer address was detected by the underlying socket provider. Field 2.0.0.0 4.0.0.0 System.Net.Sockets.SocketError The operation failed because the remote host is down. Field 2.0.0.0 4.0.0.0 System.Net.Sockets.SocketError No such host is known. The name is not an official host name or alias. Field 2.0.0.0 4.0.0.0 System.Net.Sockets.SocketError There is no network route to the specified host. Field 2.0.0.0 4.0.0.0 System.Net.Sockets.SocketError A blocking operation is in progress. Field 2.0.0.0 4.0.0.0 System.Net.Sockets.SocketError A blocking call was canceled. Field 2.0.0.0 4.0.0.0 System.Net.Sockets.SocketError An invalid argument was supplied to a member. Field 2.0.0.0 4.0.0.0 System.Net.Sockets.SocketError The application has initiated an overlapped operation that cannot be completed immediately. Field 2.0.0.0 4.0.0.0 System.Net.Sockets.SocketError The is already connected. Field 2.0.0.0 4.0.0.0 System.Net.Sockets.SocketError The datagram is too long. Field 2.0.0.0 4.0.0.0 System.Net.Sockets.SocketError The network is not available. Field 2.0.0.0 4.0.0.0 System.Net.Sockets.SocketError The application tried to set on a connection that has already timed out. Field 2.0.0.0 4.0.0.0 System.Net.Sockets.SocketError No route to the remote host exists. Field 2.0.0.0 4.0.0.0 System.Net.Sockets.SocketError No free buffer space is available for a operation. Field 2.0.0.0 4.0.0.0 System.Net.Sockets.SocketError The requested name or IP address was not found on the name server. Field 2.0.0.0 4.0.0.0 System.Net.Sockets.SocketError The error is unrecoverable or the requested database cannot be located. Field 2.0.0.0 4.0.0.0 System.Net.Sockets.SocketError The application tried to send or receive data, and the is not connected. Field 2.0.0.0 4.0.0.0 System.Net.Sockets.SocketError The underlying socket provider has not been initialized. Field 2.0.0.0 4.0.0.0 System.Net.Sockets.SocketError A operation was attempted on a non-socket. Field 2.0.0.0 4.0.0.0 System.Net.Sockets.SocketError The overlapped operation was aborted due to the closure of the . Field 2.0.0.0 4.0.0.0 System.Net.Sockets.SocketError The address family is not supported by the protocol family. Field 2.0.0.0 4.0.0.0 System.Net.Sockets.SocketError Too many processes are using the underlying socket provider. Field 2.0.0.0 4.0.0.0 System.Net.Sockets.SocketError The protocol family is not implemented or has not been configured. Field 2.0.0.0 4.0.0.0 System.Net.Sockets.SocketError The protocol is not implemented or has not been configured. Field 2.0.0.0 4.0.0.0 System.Net.Sockets.SocketError An unknown, invalid, or unsupported option or level was used with a . Field 2.0.0.0 4.0.0.0 System.Net.Sockets.SocketError The protocol type is incorrect for this . Field 2.0.0.0 4.0.0.0 System.Net.Sockets.SocketError A request to send or receive data was disallowed because the has already been closed. Field 2.0.0.0 4.0.0.0 System.Net.Sockets.SocketError An unspecified error has occurred. Field 2.0.0.0 4.0.0.0 System.Net.Sockets.SocketError The support for the specified socket type does not exist in this address family. Field 2.0.0.0 4.0.0.0 System.Net.Sockets.SocketError The operation succeeded. Field 2.0.0.0 4.0.0.0 System.Net.Sockets.SocketError The network subsystem is unavailable. Field 2.0.0.0 4.0.0.0 System.Net.Sockets.SocketError The connection attempt timed out, or the connected host has failed to respond. Field 2.0.0.0 4.0.0.0 System.Net.Sockets.SocketError There are too many open sockets in the underlying socket provider. Field 2.0.0.0 4.0.0.0 System.Net.Sockets.SocketError The name of the host could not be resolved. Try again later. Field 2.0.0.0 4.0.0.0 System.Net.Sockets.SocketError The specified class was not found. Field 2.0.0.0 4.0.0.0 System.Net.Sockets.SocketError The version of the underlying socket provider is out of range. Field 2.0.0.0 4.0.0.0 System.Net.Sockets.SocketError An operation on a nonblocking socket cannot be completed immediately.