XML RPC Woes

[Brian Quinlan]

Mark J Nenadov wrote:
> I am attempting to send an mcrypt'ed string to
> an xmlrpc function. The server is returning the
> same "Internal Error" that I got before.  I
> assume that it is because it doesn't recognize
> the type, though the type() function identifies
> the result of the mcrypt as a string.

I don't know what the output of mcrypt is but I would assume that it can
include characters that aren't valid XML characters. That is likely
causing your problem.

> I assume that I need to do some sort of encoding
> since the mcrypt'ed string is probably not  a normal
> string. From the documentation I have read, it
> seemed that I needed to call the xmlrpclib.binary()
> method, which gives me an "incorrect padding"
> error. Is xmlrpclib.binary() required to get an
> mcrypt'ed string to be accepted by the XMLRPC
> server?

Close. What you actually want to do return/pass a xmlrpclib.Binary
object. You would use it this way:

# Client usage
s = xmlrpclib.Server(...)
s.method(xmlrpclib.Binary(mcrypted_string))

# Server usage
def do_something():
	return xmlrpclib.Binary(mcrypted_string)

s = SimpleXMLRPCServer(...)
s.register_function(do_something)

> I realize that you don't maintain xmlrpclib, but
> I thought you might have some insight that I
> couldn't find in the documentation.

No problem. Please CC these questions to the Python list though so the
question and answer will be archived.

Cheers,
Brian