This is the SoapFormatter and related classes taken from Mono and compiled
for .NET Standard 2.0. Its goal is to enable serializing and deserializing SOAP
XML for applications that have a dependency on that legacy format.
The library is a code-compatible replacement, but has a different assembly identity. That means you must recompile code against this library. Three types were moved into a different namespace to avoid potential conflicts:
Header and HeaderHandler. Those are now in the System.Runtime.Remoting.Messaging.Legacy namespace and ISoapMessage is now in
System.Runtime.Serialization.Formatters.Legacy.
See the sln file in mcs/class/System.Runtime.Serialization.Formatters.Soap.
.NET Core does not support serializing all of the same types that .NET Framework does.
Noteably, Delegates, Type, and Assembly are not supported.
Use at your own risk. The formatter may have security implications in your code that you are solely responsible for.