<PackageReference Include="NETStandard.Library" Version="2.0.3" />

System.Net.Sockets.SocketError

public enum SocketError
AccessDenied = 10013

Disconnecting = 10101

Fault = 10014

HostDown = 10064

HostNotFound = 11001

InProgress = 10036

Interrupted = 10004

IOPending = 997

IsConnected = 10056

MessageSize = 10040

NetworkDown = 10050

NetworkReset = 10052

NoData = 11004

NoRecovery = 11003

NotConnected = 10057

NotSocket = 10038

ProcessLimit = 10067

ProtocolType = 10041

Shutdown = 10058

Success = 0

TimedOut = 10060

TryAgain = 11002

TypeNotFound = 10109

WouldBlock = 10035