php - Laravel Token Signature could not be verified -

i'm using laravel/lumen api backend of webapp , run hiccup.

in example have route not need user authenticated. want check in routes controller if user visiting has valid token.

so wrote following:

    if ($tokenfetch = jwtauth::parsetoken()->authenticate()) {         $token = str_replace("bearer ", "", $request->header('authorization'));     } else {         $token = '';     } 

i believe above check bearer token valid else return blank variable.

the following entire controller.

public function show($url, request $request)     {          if ($tokenfetch = jwtauth::parsetoken()->authenticate()) {             $token = str_replace("bearer ", "", $request->header('authorization'));         } else {             $token = 'book';         }         return response()->json(['token' => $token]);     } 

the problem

if pass in valid token bearer, returns token but if pass in invalid 1 following error:

tokeninvalidexception in namshiadapter.php line 62:

token signature not verified.

if don't pass token @ all:

jwtexception in jwtauth.php line 195:

the token not parsed request

is there way check if token passed , if has check if valid, if 1 has not been passed return blank return?

you can wrap inside try/catch block

public function show($url, request $request) {     try {         $tokenfetch = jwtauth::parsetoken()->authenticate())          $token = str_replace("bearer ", "", $request->header('authorization'));     }catch(\tymon\jwtauth\exceptions\jwtexception $e){//general jwt exception         $token = 'book';     }     return response()->json(['token' => $token]); } 

there few exceptions might want handle separately (jwt-auth/exceptions)

also you're using laravel 5 can global handling jwt exceptions ,not recommended in case should know of option , choose yourself. app/exceptions/handler.php , inside render method add [at top]

if ($e instanceof \tymon\jwtauth\exceptions\jwtexception) {     //what happen when jwt exception occurs }