[api] make sure to use increasing request ids, more flexibility for m…

…ethod overwriting

grapheneapi/graphenewsrpc.py

@@ -41,13 +41,18 @@ class GrapheneWebsocketRPC(object):
                   subsystem, please use ``GrapheneWebsocket`` instead.
 
     """
-    api_id = {}
-
     def __init__(self, url, user="", password=""):
+        self.api_id = {}
+        self._request_id = 0
         self.url = url
         self.user = user
         self.password = password
         self.wsconnect()
+        self.register_apis()
+
+    def get_request_id(self):
+        self._request_id += 1
+        return self._request_id
 
     def wsconnect(self):
         while True:
@@ -57,9 +62,11 @@ def wsconnect(self):
             except KeyboardInterrupt:
                 break
             except:
-                log.warning("Cannot connect to WS node: %s" % self.url)
+                log.warning("Lost connection to node: %s. Retrying in 10 seconds" % self.url)
                 time.sleep(10)
         self.login(self.user, self.password, api_id=1)
+
+    def register_apis(self):
         self.api_id["database"] = self.database(api_id=1)
         self.api_id["history"] = self.history(api_id=1)
         self.api_id["network_broadcast"] = self.network_broadcast(api_id=1)
@@ -318,7 +325,7 @@ def method(*args, **kwargs):
             query = {"method": "call",
                      "params": [api_id, name, list(args)],
                      "jsonrpc": "2.0",
-                     "id": 0}
+                     "id": self.get_request_id()}
             r = self.rpcexec(query)
             return r
         return method