Cannot add optional parameters to the server method

[nk1973]

I see such limitation in the lib (may be i miss something).

1. According to spec: http://www.jsonrpc.org/specification#request_object
   request params may be omitted.
2. i want to implement method that take optional parameters, - that is the client can omit them in run time. For example method
   GetLog(optional filter1, optional filter2,...).
   So in one run the client can use GetLog(time filter)
   like this
   {"jsonrpc": "2.0", "method": "GetLog", "params": ["2013/12/00:00:00"], "id": 1}
   In the other without any filter (according to the spec this seems to be OK)
   {"jsonrpc": "2.0", "method": "GetLog", "id": 1}

But i don't see how i implement this with the lib (something like c++ overloading).

[toolmmy]

You should be able to register a method that has an object as parameter (e.g. "params" : {"dateFrom": x, "dateTo":y}). In your callback, based in the provided data in the Json::Value& request you can figure out what you need to return. In this case your callback acts more like a facade.

[nk1973]

Yes this should work for the most of the cases (when params object exist). The only problem is if the client will omit params object - according to spec he may do it - and then the client will received exception.

I thinked about something like c++ overloading. Server can register multiple methods with the same name but with different parameter list.
Something like

class AbstarctMyStubServer ...
{
public:
AbstarctMyStubServer(...)
{
}

virtual Json::Value GetLog() = 0;
virtual Json::Value GetLog(const std::string &param1 ) = 0;
virtual Json::Value GetLog(const std::string &param1, const std::string &param1) = 0;
...
};

But the problem is that i don't see this is possible with current lib. (may be i'm wrong).

[cinemast]

The thing is, that this behavior is not specified in the standard proposal. If you need such things, fork this repo and adapt this as required.