Workaround for missing parameters in GPN response

Some clients don't report certain parameters in GPN response but report
their descendants only. This patch attemps to add those missing
parameters assuming writable attribute being false.

lib/session.coffee

@@ -1128,8 +1128,16 @@ rpcResponse = (sessionData, id, rpcRes, callback) ->
       params = []
       params.push([root.concat('*'), timestamp])
 
+      # Some clients don't report all ancestors explicitly
+      missing = {}
+
       for p in rpcRes.parameterList
+        i = p[0].length - 1
+        while (i = p[0].lastIndexOf('.', i - 1)) > rpcReq.parameterPath.length
+          missing[p[0].slice(0, i)] |= 0
+
         if common.endsWith(p[0], '.')
+          missing[p[0][0...-1]] |= 1
           path = common.parsePath(p[0][0...-1])
           if not rpcReq.nextLevel
             params.push([path.concat('*'), timestamp])
@@ -1138,9 +1146,14 @@ rpcResponse = (sessionData, id, rpcRes, callback) ->
             {object: [timestamp, 1], writable: [timestamp, if p[1] then 1 else 0]}])
 
         else
+          missing[p[0]] |= 1
           params.push([common.parsePath(p[0]), timestamp,
             {object: [timestamp, 0], writable: [timestamp, if p[1] then 1 else 0]}])
 
+      for k, v of missing when v == 0
+        # TODO consider showing a warning
+        params.push([common.parsePath(k), timestamp, {object: [timestamp, 1], writable: [timestamp, 0]}])
+
       # Sort such that actual parameters are set before wildcard ones
       params.sort((a, b) ->
         al = a[0].length