Golang JWT 与 go-jwt-middleware 无效

Question

Got JWT is invalid with new version of "github.com/auth0/go-jwt-middleware/v2"

successfully generate token with "github.com/golang-jwt/jwt/v4" plugin, and try to use it on request but rejected on middleware, i guess the issues in go-jwt-middleware . there is some missing with implementation, maybe anyone has already implement and want to share please

Here is the code:

type Claims struct {
    Username string `json:"username"`
    Role     string `json:"role"`
    Id       string `json:"id"`
    Avatar   string `json:"avatar"`
    jwt.StandardClaims
}

func (c *Claims) Validate(ctx context.Context) error {
    return nil
}

var jwtKey = []byte("secret")

func Middleware(h http.Handler) http.Handler {
    keyFunc := func(ctx context.Context) (interface{}, error) {
        return jwtKey, nil
    }

    customClaims := func() validator.CustomClaims {
        return &Claims{}
    }

    jwtValidator, err := validator.New(
        keyFunc,
        validator.HS256,
        "issuer",
        []string{"audience"},
        validator.WithCustomClaims(customClaims),
        validator.WithAllowedClockSkew(30*time.Second),
    )
    if err != nil {
        log.Fatalf("Failed to set up the validator: %v", err)
    }

    // Set up the middleware.
    middleware := jwtmiddleware.New(jwtValidator.ValidateToken)
    return middleware.CheckJWT(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
        _, token, err := ParseToken(r)
        if !token.Valid || err != nil {
            w.WriteHeader(401)
            w.Write([]byte("Unauthorized"))
            return
        }

        h.ServeHTTP(w, r)
    }))
}

func GenerateToken(id string, username string, role string, avatar string) (string, int64, error) {
    expirationTime := time.Now().Add(time.Hour * 24).Unix()
    claims := &Claims{
        Id:       id,
        Username: username,
        Role:     role,
        Avatar:   avatar,
        StandardClaims: jwt.StandardClaims{
            ExpiresAt: expirationTime,
        },
    }

    token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
    tokenString, err := token.SignedString(jwtKey)
    if err != nil {
        return "", 0, err
    }

    return tokenString, expirationTime, nil
}

And i don't found any doccumentation for the value for issuer && audience option on validator. just follow the example :

    jwtValidator, err := validator.New(
        keyFunc,
        validator.HS256,
        "issuer", <------------ issuer
        []string{"audience"}, <------------ audience
        validator.WithCustomClaims(customClaims),
        validator.WithAllowedClockSkew(30*time.Second),
    )

Answer 1

        Issuer:   issuerURL,
        Audience: audience,

The audience value is a string -- typically, the base address of the resource being accessed. for example which services, APIs, products should accept this token as an access token for the service. A token valid for Stackoveflow should not be accepted for the Stack exchange website, even if both of them have the same issuer, they'll have different audiences.

Issuer value is a string like this https://<issuer-url>/ Who created the token. like token issued by GitHub or LinkedIn and this can be verified by using the OpenID configuration endpoint