fix

test/TestBackend.ts

@@ -1,11 +1,36 @@
 import { Server } from '../src/Backend'
+import { SubscriptionResponse } from '../src/Responses'
+
+let subcallback
 
 new Server(20000, [{
     name: "HelloWorldRPCGroup",
-    publicRPCs: () => [],
-    localRPCs: () => [{
+    exportRPCs: () => [{
         type: 'Call',
         name: 'echo',
         call: async (s:string) => s,
-    }]
-}])
+    },
+    {
+        type: 'Hook',
+        name: 'subscribe',
+        hook: async (callback):Promise<any> => {
+            subcallback = callback
+            return new SubscriptionResponse(""+Math.random())
+        },
+        unhook: async (uid):Promise<any> => { subcallback = null }
+    },
+    function add(...args:number[]):number {return args.reduce((a,b)=>a+b, 0)},
+    function triggerCallback(message):number {return subcallback(message)},
+]
+}])
+
+try{
+    new Server(20001, [{
+        name: "bad",
+        exportRPCs: ()  => [
+            (aaa,bbb,ccc) => { return aaa+bbb+ccc }
+        ]
+    }])
+}catch(badRPCError){
+    console.log("expected bad-RPC error happened: "+ !!badRPCError)
+}

test/TestFrontend.ts

@@ -1,7 +1,24 @@
 import { Client } from '../src/Frontend'
-
+console.log(Client)
 const client = new Client(20000, 'localhost')
-client.connect().then(_ => {
-    client.info().then(console.log)
-    client["HelloWorldRPCGroup"].echo("x").then(console.log)
-})
+client.connect().then(async _ => {
+    await client.info().then(console.log)
+    
+    await client["HelloWorldRPCGroup"].echo("x")
+    .then(hopefullyX => console.log("echo('x') returned x: ", hopefullyX === "x", hopefullyX))
+
+    await client["HelloWorldRPCGroup"].add(1,2,3)
+    .then(hopefully6 => console.log("add(1,2,3) returned 6: ", hopefully6 === 6, hopefully6))
+
+    let counter = 0
+    const handler = (s) => {
+        counter++
+        if(counter === 3)
+            console.log("callback was called 3 times", counter === 3)
+    }
+
+    await client["HelloWorldRPCGroup"].subscribe(handler)
+    client["HelloWorldRPCGroup"].triggerCallback("test1")
+    client["HelloWorldRPCGroup"].triggerCallback("test2")
+    client["HelloWorldRPCGroup"].triggerCallback("test3")
+})

test/index.html

@@ -0,0 +1 @@
+<script src="../lib/RPCaller.min.js"></script>