"unknown authentication strategy" "jwt"

Question

I'm now retired and now have some time to learn how to develop an MEVN application ;-) I'm now in the point of securing a few pages in the app with a jwt token. I can log a user and later read its token:

app.get('/movies', (req,res) => {
    jwtOptions.jwtFromRequest = ExtractJwt.fromAuthHeaderWithScheme('jwt');
     console.log(Version + 'JWT token: ' + jwtOptions.jwtFromRequest(req));
    Movie.find({}, 'name description release_year genre', (error, movies) => {
        if(error) { console.log(error);}
        console.log(Version + "Fetched " + movies.length + " movies");
        res.send(movies);
    });
});

I get the user token in the console. Fine! This get request is not yet protected. To protect it I modify slightly the 1st line:

app.get('/movies', passport.authenticate('jwt', { session: false }), (req,res) => {
...

An error is now triggered.

Unknown authentication strategy "jwt"

After reading a few million questions and answers on various sites, I'm short of any idea to fix my problem. Suggestions will be highly appreciated.

Thanks

Have you instructed passport with what `jwt` is? You need something like `passport.use(new JwtStrategy(options))` https://www.npmjs.com/package/passport-jwt — Yury Tarabanko, Nov 28 '18 at 15:05
The JwtStrategy callback ( with payload and done ) is not called ;-( — Yves, Nov 28 '18 at 16:50
First, make sure you added `passport.initialize()` middleware. Then check you have called `passport.use` before declaring `/movies` route. BTW docs :) http://www.passportjs.org/docs/configure/ — Yury Tarabanko, Nov 28 '18 at 17:28
https://stackoverflow.com/a/40670855/4209887 refer to this answer — Purvik Rana, Feb 07 '19 at 12:44

Furkan Ozdemir · Answer 1 · 2019-02-20T00:49:35.507

1

Did you check your server.js or index.js? you should add some initializer. I received same error and I was missed those

const passport = require('passport');
// Passport middleware
app.use(passport.initialize());

// Passport Config
require('./config/passport')(passport);

edited Feb 20 '19 at 00:49

answered Dec 24 '18 at 08:52

Furkan Ozdemir

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"unknown authentication strategy" "jwt"

1 Answers1