fix bad rpc finding for class member for real this time

test/Test.ts

@@ -4,6 +4,7 @@ import { RPCServer, RPCSocket, SubscriptionResponse, makeSubResponse } from '../
 import * as uuidv4 from "uuid/v4"
 import { doesNotReject } from "assert";
 import { Socket } from "dgram";
+import { RPCExporter } from "../src/Interfaces";
 
 const add = (...args:number[]) => {return args.reduce((a,b)=>a+b, 0)}
 function makeServer(){
@@ -499,4 +500,34 @@ describe("Errorhandler functionality", ()=>{
             })
         })
     })
+})
+
+
+describe("Class binding", ()=>{
+
+    class MyExporter implements RPCExporter{
+        name = "MyExporter";
+        exportRPCs = () => [
+            this.myRPC
+        ]
+
+        myRPC = () => "Hello World"
+
+    }
+
+    it("binds correctly", (done)=>{
+        const exporter = new MyExporter()
+        const serv = new RPCServer(21004, [exporter])
+        const sock = new RPCSocket(21004, 'localhost')
+        sock.connect().then(sock => {
+            if(sock.MyExporter && sock.MyExporter.myRPC){
+                done()
+            }
+        })
+        .catch(done)
+        .finally(() => {
+            sock.destroy()
+            serv.destroy()
+        })
+    })
 })