<PackageReference Include="NETStandard.Library" Version="2.0.0-preview2-25401-01" />

System.Net.CredentialCache

namespace System.Net { public class CredentialCache : IEnumerable, ICredentials, ICredentialsByHost { public static ICredentials DefaultCredentials { get; } public static NetworkCredential DefaultNetworkCredentials { get; } public CredentialCache(); public void Add(string host, int port, string authenticationType, NetworkCredential credential); public void Add(Uri uriPrefix, string authType, NetworkCredential cred); public NetworkCredential GetCredential(string host, int port, string authenticationType); public NetworkCredential GetCredential(Uri uriPrefix, string authType); public IEnumerator GetEnumerator(); public void Remove(string host, int port, string authenticationType); public void Remove(Uri uriPrefix, string authType); } }