beremiz

Add helper function GetRetainSize()

2018-06-01, Andrey Skvortsov
9fa5be79bb77
Add helper function GetRetainSize()

it will be useful for retain implementations.
{
"url":"ws://127.0.0.1:8888",
"realm":"Automation",
"ID":"wamptest",
"password":"1234567890",
"key":"ABCDEFGHIJ"
}