Add features to errorhandler

package.json

@@ -1,6 +1,6 @@
 {
   "name": "rpclibrary",
-  "version": "1.6.0",
+  "version": "1.6.1",
   "description": "rpclibrary is a websocket on steroids!",
   "main": "./js/Index.js",
   "repository": {

src/Backend.ts

@@ -40,8 +40,8 @@ export class RPCServer<
             this.sesame = U.makeSesameFunction(conf.sesame)
         }
 
-        this.errorHandler = (socket:I.Socket) => (error:any) => { 
-            if(conf.errorHandler) conf.errorHandler(socket, error)
+        this.errorHandler = (socket:I.Socket) => (error:any, rpcName:string, args: any[]) => { 
+            if(conf.errorHandler) conf.errorHandler(socket, error, rpcName, args)
             else throw error
         }
         
@@ -69,14 +69,14 @@ export class RPCServer<
         try{
             this.io.attach(this.ws)
             this.io.on('socket', (socket:I.Socket) => {
-                socket.on('error', (err) => this.errorHandler(socket, err))
+                socket.on('error', (err) => this.errorHandler(socket, err, "bind", []))
                 socket.on('close', () => this.closeHandler(socket))
                 this.connectionHandler(socket)
                 this.initRPCs(socket)
             })
             this.ws.listen(this.port, this.visibility)
         }catch(e){
-            this.errorHandler(this.io, e)
+            this.errorHandler(this.io, e, 'start', [])
         }
     }
 

src/Types.ts

@@ -5,7 +5,7 @@ export type HookFunction<F extends AnyFunction = AnyFunction, SubresT = {}> = (.
 
 export type Visibility = "127.0.0.1" | "0.0.0.0"
 export type ConnectionHandler = (socket:I.Socket) => void
-export type ErrorHandler = (socket:I.Socket, error:any) => void
+export type ErrorHandler = (socket:I.Socket, error:any, rpcName: string, args: any[]) => void
 export type CloseHandler = (socket:I.Socket) =>  void
 export type SesameFunction = (sesame : string) => boolean
 export type ExceptionHandling = 'local' | 'remote'

src/Utils.ts

@@ -74,7 +74,7 @@ export function rpcHooker<SubResT = {}>(socket: I.Socket, exporter:I.RPCExporter
         else
             rpcFunction = info.call
 
-        socket.hook(ret.uniqueName, callGenerator(socket, rpcFunction, errorHandler))
+        socket.hook(ret.uniqueName, callGenerator(info.name, socket, rpcFunction, errorHandler))
         return ret
     })
 }
@@ -83,7 +83,7 @@ export function rpcHooker<SubResT = {}>(socket: I.Socket, exporter:I.RPCExporter
  * Decorate an RPC with the error handler
  * @param rpcFunction the function to decorate
  */
-const callGenerator = (socket: I.Socket, rpcFunction : T.AnyFunction, errorHandler: T.ErrorHandler) : T.AnyFunction => {
+const callGenerator = (rpcName : string, socket: I.Socket, rpcFunction : T.AnyFunction, errorHandler: T.ErrorHandler) : T.AnyFunction => {
     const argsArr = extractArgs(rpcFunction)
     const args = argsArr.join(',')
     const argsStr = argsArr.map(stripAfterEquals).join(',')
@@ -92,7 +92,7 @@ const callGenerator = (socket: I.Socket, rpcFunction : T.AnyFunction, errorHandl
         try{
             return await rpcFunction(`+argsStr+`)
         }catch(e){
-            errorHandler(socket)(e)
+            errorHandler(socket)(e, rpcName, [`+args+`])
         }
     }`)
 }
@@ -126,7 +126,7 @@ const hookGenerator = (rpc:T.HookRPC<any, any, any>, errorHandler: T.ErrorHandle
                 })
                 return res
             }catch(e){
-                errorHandler(socket, e)
+                errorHandler(socket)(e, rpc.name, [`+args+`])
             }
         }`)
     }
@@ -139,7 +139,7 @@ const hookGenerator = (rpc:T.HookRPC<any, any, any>, errorHandler: T.ErrorHandle
             })
             return res
         }catch(e){
-            errorHandler(socket, e)
+            errorHandler(socket)(e, rpc.name, [`+args+`])
         }
     }`)
 }

test/Test.ts

@@ -38,9 +38,9 @@ function makeServer(){
             function triggerCallback(...messages:any[]):number {return subcallback.apply({}, messages)},
         ]
     }],{
-        connectionHandler: (socket) => { console.log("connectionHandler OK") },
-        closeHandler: (socket) => { console.log("closeHandler OK") },
-        errorHandler: (socket, err) => { console.error("errorHandler OK SO YOU SHOULDN'T SEE THIS"); throw err }
+        connectionHandler: (socket) => {  },
+        closeHandler: (socket) => { },
+        errorHandler: (socket, err) => { throw err }
     })
 }
 
@@ -193,12 +193,12 @@ describe('It should do unhook', () => {
                 }
             }, 
             function checkCandy():string { cb(candy); return candy },
-            function stealCandy():string { candy = "_OK"; cb(candy); cb = (...any) => console.log.apply(console,["Server:", ...any]); return candy }
+            function stealCandy():string { candy = "_OK"; cb(candy); cb = () => {}; return candy }
         ]
         }],{
-            connectionHandler: (socket) => { console.log("connectionHandler OK") },
-            closeHandler: (socket) => { console.log("closeHandler OK") },
-            errorHandler: (socket, err) => { console.error("errorHandler OK SO YOU SHOULDN'T SEE THIS"); throw err }
+            connectionHandler: (socket) => { },
+            closeHandler: (socket) => { },
+            errorHandler: (socket, err) => { throw err }
         })
         client = new RPCSocket(21000, "localhost")
         return await client.connect()
@@ -210,14 +210,12 @@ describe('It should do unhook', () => {
     })
 
     it('Unhook+unsubscribe should stop callbacks', (done) => {
-        client['test'].subscribe(c => console.log("Client: "+c)).then( async (res: SubscriptionResponse) => {
+        client['test'].subscribe(c => {}).then( async (res: SubscriptionResponse) => {
             const r1 = await client['test'].checkCandy()
             const r3 = await client['test'].stealCandy()
             client.unhook(res.uuid)
-            console.log("---- No client output below this line")
             const r2 = await client['test'].checkCandy()
             const r4 = await client['test'].checkCandy()
-            console.log("---- More output below")
 
             if(r1 === "OK" && r3 === "_OK" && r2 === "_OK" && r4 === "_OK")
                 done()
@@ -382,15 +380,14 @@ describe('Error handling', ()=>{
         })
     })
 
-    it("RPC throws server with handler", (done)=>{
+    it("RPC throws on server with handler", (done)=>{
         let server = new RPCServer(21004, [ {
             name: 'createUser' as 'createUser',
             exportRPCs: () => [{
                 name: 'createUser' as 'createUser',
                 call: createUser
         }]}], {
-            errorHandler: (socket, e) => {
-                //console.log("EXPECTED SERVER EXCEPTION", String(e));
+            errorHandler: (socket, e, rpcName, args) => {
                 done()
             }
         })
@@ -416,3 +413,80 @@ describe('Error handling', ()=>{
         })
     })
 })
+
+describe("Errorhandler functionality", ()=>{
+    let createUser = async( user: {a:any,b:any}) => {
+        throw new Error("BAD BAD BAD")
+    }
+
+    it("correct values are passed to the handler", (done)=>{
+        let server = new RPCServer(21004, [ {
+            name: 'createUser' as 'createUser',
+            exportRPCs: () => [{
+                name: 'createUser' as 'createUser',
+                call: createUser
+        }]}], {
+            errorHandler: (socket, e, rpcName, args) => {
+                if(e.message === "BAD BAD BAD" && rpcName === "createUser" && args[0]['a'] === 'a' && args[0]['b'] === 'b')
+                    done()
+            }
+        })
+
+        let sock = new RPCSocket(21004, 'localhost')
+        sock.connect().then((cli) => {
+            cli["createUser"]["createUser"]({
+                a:'a',
+                b:'b'
+            })
+            .then(r => {
+                if(r != null)
+                done("UNEXPECTED RESULT " + r)
+            })
+            .catch((e) => {
+                done("UNEXPECTED CLIENT ERROR " + e)
+                done(e)
+            })
+            .finally(() => {
+                sock.destroy()
+                server.destroy()
+            })
+        })
+    })
+
+    it("handler sees sesame", (done)=>{
+        let sesame = "AAAAAAAAAAAAAAA"
+        let server = new RPCServer(21004, [ {
+            name: 'createUser' as 'createUser',
+            exportRPCs: () => [{
+                name: 'createUser' as 'createUser',
+                call: createUser
+        }]}], {
+            sesame: sesame,
+            errorHandler: (socket, e, rpcName, args) => {
+                if(e.message === "BAD BAD BAD" && rpcName === "createUser" && args[0] === sesame && args[1]['a'] === 'a' && args[1]['b'] === 'b')
+                    done()
+            }
+            
+        })
+
+        let sock = new RPCSocket(21004, 'localhost')
+        sock.connect(sesame).then((cli) => {
+            cli["createUser"]["createUser"]({
+                a:'a',
+                b:'b'
+            })
+            .then(r => {
+                if(r != null)
+                done("UNEXPECTED RESULT " + r)
+            })
+            .catch((e) => {
+                done("UNEXPECTED CLIENT ERROR " + e)
+                done(e)
+            })
+            .finally(() => {
+                sock.destroy()
+                server.destroy()
+            })
+        })
+    })
+})