Server in golang

client.py

#!/usr/bin/env python
import jsonrpclib

s = jsonrpclib.Server('http://localhost:1234/rpc')
s.Say('Kamil')

server.go

package main

import (
	"code.google.com/p/gorilla/rpc"
	"code.google.com/p/gorilla/rpc/json"
	"net/http"
)


type HelloArgs struct {
	Who string
}

type HelloReply struct {
	Message string
}

type HelloService struct{}

func (h *HelloService) Say(r *http.Request, args *HelloArgs, reply *HelloReply) error {
	reply.Message = "Hello, " + args.Who + "!"
	return nil
}

func main() {
	s := rpc.NewServer()
	s.RegisterCodec(json.NewCodec(), "application/json-rpc")
	s.RegisterCodec(json.NewCodec(), "application/x-www-form-urlencoded")
	s.RegisterService(new(HelloService), "")
	http.Handle("/rpc", s)
	http.ListenAndServe(":1234", nil)
}

traceback

  File "<stdin>", line 1, in <module>
  File "/Network/Cluster/home/kamil/.virtualenvs/jsonrpc/lib/python2.6/site-packages/jsonrpclib/jsonrpc.py", line 274, in __call__
    return self.__send(self.__name, args)
  File "/Network/Cluster/home/kamil/.virtualenvs/jsonrpc/lib/python2.6/site-packages/jsonrpclib/jsonrpc.py", line 224, in _request
    response = self._run_request(request)
  File "/Network/Cluster/home/kamil/.virtualenvs/jsonrpc/lib/python2.6/site-packages/jsonrpclib/jsonrpc.py", line 242, in _run_request
    verbose=self.__verbose
  File "/opt/zymeworks/platform/4.0.22/lib/python2.6/xmlrpclib.py", line 1243, in request
    headers
xmlrpclib.ProtocolError: <ProtocolError for localhost:1234/rpc: 400 Bad Request>