RPC4Django Update October 2009

Posted on October 13, 2009 by David

A user has requested that RPC4Django support HTTP access control. This is the new preferred method where newer browsers are allowed to make cross domain AJAX requests (with specific constraints) without having to resort to hacks and workarounds like dynamic script tags. I also want to work on JSON class hinting, which is not currently supported. I’m shooting to get this going in the next week before I leave for a Mexican vacation. Swine flu has made the Mexican resorts very reasonable.

Weird Issue on Chrome

In addition, I have noticed that the authenticated demo site does not work in Google Chrome. Is anyone else experiencing this? Any idea why? There’s no problem with Chrome on the demo site not running ssl.

First Version of RPC4Django

Posted on July 6, 2009 by David

The first version of my unified xmlrpc and jsonrpc server is available. Go get it!

Unified XML and JSON RPC Dispatcher for Django

Posted on June 26, 2009 by David

After looking around at the rpc support available in Django, I think I will create and distribute my own application. Here are the goals:

Complete xml and json rpc support
Easy identification of rpc methods by a decorator
Customizable documentation (which is absent from DocXMLRPCServer)
Support rpc introspection
Support for method signatures (which is absent from SimpleXMLRPCServer)
Easy installation and integration into Django projects
Licensed properly for open source or commercial software

Updates to come. I’m off to San Francisco for a weekend of fun.

Django with JsonRPC and XMLRPC

Posted on June 4, 2009July 14, 2009 by David

[Edit: take a look at RPC4Django for a JSONRPC and XMLRPC server for Django]

I corresponded recently with a developer working on a Django-powered jsonrpc library. In the past, I have done some work on web applications that require good external interfaces. In some cases, however, it makes sense to make the same methods available via both jsonrpc and xmlrpc.

For javascript and flash, json makes a lot of sense. For communication between client side and server side, jsonrpc works very well since json is natively supported and speed can be more of a factor in presentation. However, if external interfaces are also going to interact with your API, jsonrpc is not as well supported as xmlrpc. Virtually every language has good libraries for xmlrpc. For this reason, it makes good sense to combine the two and make the same methods available to both.

import logging
from SimpleXMLRPCServer import SimpleXMLRPCDispatcher
from django.http import HttpResponse, Http404
from jsonrpc import JsonRpc

xmlrpcdispatcher = SimpleXMLRPCDispatcher(allow_none=False, encoding=None)
jsonrpcdispatcher = JsonRpc()
# ... register methods with xmlrpc and jsonrpc

def rpc_handler(request):
    if request.META['CONTENT_TYPE'] == 'application/json':
        response = jsonrpcdispatcher.handle_request(request)
    elif request.META['CONTENT_TYPE'] == 'text/xml':
        response = HttpResponse()
        response.write(xmlrpcdispatcher._marshaled_dispatch(request.raw_post_data))
        response['Content-length'] = str(len(response.content))
    else:
        # display documentation, or just raise a 404
        logging.debug('rpc request type: %s' %request.META['CONTENT_TYPE'])
        raise Http404

    return response

import logging

from SimpleXMLRPCServer import SimpleXMLRPCDispatcher

from django.http import HttpResponse, Http404

from jsonrpc import JsonRpc

xmlrpcdispatcher = SimpleXMLRPCDispatcher(allow_none=False, encoding=None)

jsonrpcdispatcher = JsonRpc()

# ... register methods with xmlrpc and jsonrpc

def rpc_handler(request):

if request.META['CONTENT_TYPE'] == 'application/json':

response = jsonrpcdispatcher.handle_request(request)

elif request.META['CONTENT_TYPE'] == 'text/xml':

response = HttpResponse()

response.write(xmlrpcdispatcher._marshaled_dispatch(request.raw_post_data))

response['Content-length'] = str(len(response.content))

else:

# display documentation, or just raise a 404

logging.debug('rpc request type: %s' %request.META['CONTENT_TYPE'])

raise Http404

return response

David Fischer dot Name

Some Things to Some People

json

RPC4Django Update October 2009

Weird Issue on Chrome

First Version of RPC4Django

Unified XML and JSON RPC Dispatcher for Django

Django with JsonRPC and XMLRPC