RequestContext Error

def custom_proc(request):
    return {
        'app': 'My app',
        'user': request.user,
        'ip_address': request.META['REMOTE_ADDR']}

def view1(request):

    t = loader.get_template('contexts/temp1.html')
    c = RequestContext(
            request, {'message': 'I am first view.'},
            processors=[custom_proc])
    return HttpResponse(t.render(c))