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SignalR: Throw exception when method does not exist. #63475

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SignalR: Throw exception when method does not exist. #63475

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2 changes: 1 addition & 1 deletion src/SignalR/clients/csharp/Client.Core/src/HubConnection.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -2419,7 +2419,7 @@ IReadOnlyList<Type> IInvocationBinder.GetParameterTypes(string methodName)
if (!_hubConnection._handlers.TryGetValue(methodName, out var invocationHandlerList))
{
Log.MissingHandler(_logger, methodName);
return Type.EmptyTypes;
throw new KeyNotFoundException($"Method with name '{methodName}' does not exist.");
}

// We use the parameter types of the first handler
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