diff --git a/wsme/__init__.py b/wsme/__init__.py
index 7e2625c..31b424a 100644
--- a/wsme/__init__.py
+++ b/wsme/__init__.py
@@ -1 +1,2 @@
 from controller import *
+import restjson
diff --git a/wsme/controller.py b/wsme/controller.py
index 1293dd0..1b4d774 100644
--- a/wsme/controller.py
+++ b/wsme/controller.py
@@ -79,11 +79,11 @@ class validate(object):
 class WSRoot(object):
     def __init__(self, protocols=None):
         if protocols is None:
-            protocols = registered_protocols.values()
+            protocols = registered_protocols.keys()
         self.protocols = {}
         for protocol in protocols:
             if isinstance(protocol, str):
-                protocol = registered_protocols[protocol]
+                protocol = registered_protocols[protocol]()
             self.protocols[protocol.name] = protocol
 
     def _handle_request(self, request):
diff --git a/wsme/rest.py b/wsme/rest.py
index 0089da3..ca7c2f9 100644
--- a/wsme/rest.py
+++ b/wsme/rest.py
@@ -10,4 +10,11 @@ class RestProtocol(object):
         
     def handle(self, root, request):
         path = request.path.split('/')
+        a = root
+        for name in path:
+            a = getattr(a, name)
+        if not hasattr(a, '_ews_description'):
+            raise ValueError('Invalid path')
+        fonc = a
+        kw = self.get_args(req)
 
diff --git a/wsme/restjson.py b/wsme/restjson.py
index c673bca..343a136 100644
--- a/wsme/restjson.py
+++ b/wsme/restjson.py
@@ -1,7 +1,13 @@
+from wsme.rest import RestProtocol
+from wsme.controller import register_protocol
+
 class RestJsonProtocol(RestProtocol):
     name = 'REST+Json'
     dataformat = 'json'
     content_types = [None, 'application/json', 'text/json']
 
+    def get_args(self, req):
+        kw = json.loads(req.body)
 
-controller.register_protocol(RestJsonProtocol)
+
+register_protocol(RestJsonProtocol)
diff --git a/wsme/tests/protocol.py b/wsme/tests/protocol.py
new file mode 100644
index 0000000..19f0aef
--- /dev/null
+++ b/wsme/tests/protocol.py
@@ -0,0 +1,26 @@
+import unittest
+from webob.dec import wsgify
+from webtest import TestApp
+
+from wsme import *
+
+class WSTestRoot(WSRoot):
+    def reset(self):
+        self.touched = False
+
+    @expose()
+    def touch(self):
+        self.touched = True
+
+class TestProtocol(unittest.TestCase):
+    def setUp(self):
+        self.root = WSTestRoot([self.protocol])
+
+        self.app = TestApp(wsgify(self.root._handle_request))
+
+    def _call(self, fpath, **kw):
+        pass
+    
+    def test_touch(self):
+        assert self.call('touch') is None
+
diff --git a/wsme/tests/test_restjson.py b/wsme/tests/test_restjson.py
new file mode 100644
index 0000000..2018ec5
--- /dev/null
+++ b/wsme/tests/test_restjson.py
@@ -0,0 +1,14 @@
+from wsme.tests.protocol import TestProtocol
+import json
+
+class TestRestJson(TestProtocol):
+    protocol = 'REST+Json'
+    def call(self, fpath, **kw):
+        content = json.dumps(kw)
+        res = self.app.post(
+            '/' + fpath,
+            content,
+            headers={
+                'Content-Type': 'application/json'
+            })
+        return json.loads(res.body)