Possible null reference return.

Possible null reference return.

Possible null reference return.

Possible null reference return.

'AesManaged' is obsolete: 'Derived cryptographic types are obsolete. Use the Create method on the base type instead.' (https://aka.ms/dotnet-warnings/SYSLIB0021)

'SHA1CryptoServiceProvider' is obsolete: 'Derived cryptographic types are obsolete. Use the Create method on the base type instead.' (https://aka.ms/dotnet-warnings/SYSLIB0021)

Possible null reference return.

Cannot convert null literal to non-nullable reference type.

Non-nullable property 'WorkSocket' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the property as nullable.