Keyword args to SimpleXMLRPCServer

[Gabriel Genellina]

En Mon, 17 Dec 2007 21:13:32 -0300, Sean DiZazzo <half.italian at gmail.com>  
escribió:

> Why is the following not working?  Is there any way to get keyword
> arguments working with exposed XMLRPC functions?
>
> ~~~~~~~~~~~~~~~~ server.py
> import SocketServer
> from SimpleXMLRPCServer import
> SimpleXMLRPCServer,SimpleXMLRPCRequestHandler
>
> # Threaded mix-in
> class
> AsyncXMLRPCServer(SocketServer.ThreadingMixIn,SimpleXMLRPCServer):
> pass
>
> class XMLFunctions(object):
>     def returnArgs(*args, **kwargs):
>         return kwargs.items()

You forget the self argument. But this is not the problem. XMLRPC does not  
allow passing parameters by name, only positional parameters. See  
http://www.xmlrpc.com/spec:

"If the procedure call has parameters, the <methodCall> must contain a  
<params> sub-item. The <params> sub-item can contain any number of  
<param>s, each of which has a <value>. "

Parameters have no <name>, just a <value>, so you can only use positional  
parameters. But you can simulate keyword arguments by collecting them in a  
dictionary and passing that dictionary as an argument instead.

(server side)
      def returnArgs(self, x, y, other={}):
          return x, y, other

(client side)
     print server.returnArgs("xvalue", "yvalue", dict(foo=123, bar=234,  
baz=345))

-- 
Gabriel Genellina