SignalR Typenamehandling

Question

I am trying to get SignalR to work with custom JsonSerializerSettings for its payload, specifically I\'m trying to set TypeNameHandling = TypeNameHandling.Auto.

Answer 1

I know that this is a rather old thread and that there is an accepted answer.

However, I had the problem that I could not make the Server read the received json correctly, that is it did only read the base classes

However, the solution to the problem was quite simple:

I added this line before the parameter classes:

[JsonConverter(typeof(PolymorphicAssemblyRootConverter), typeof(ABase))]
public class ABase
{
}

public class ADerived : ABase
{
    public AInner[] DifferentObjects { get; set;}
}
public class AInner
{
}
public class AInnerDerived : AInner
{
}
...
public class PolymorphicAssemblyRootConverter: JsonConverter
{
    public PolymorphicAssemblyRootConverter(Type classType) :
       this(new Assembly[]{classType.Assembly})
    {
    }
    // Here comes the rest of PolymorphicAssemblyRootConverter
}

No need to set JsonSerializer on the proxy connection of the client and add it to the GlobalHost.DependencyResolver.

It took me a long time to figure it out, I am using SignalR 2.2.1 on both client and server.