vertx / io.vertx.ext.auth.oauth2 / OAuth2Auth / introspectToken

# introspectToken

`open fun introspectToken(token: String, handler: Handler<AsyncResult<AccessToken>>): OAuth2Auth`

Query an OAuth 2.0 authorization server to determine the active state of an OAuth 2.0 token and to determine meta-information about this token.

### Parameters

`token` - the access token (base64 string)

`handler` - A handler to receive the event

Return
self

`abstract fun introspectToken(token: String, tokenType: String, handler: Handler<AsyncResult<AccessToken>>): OAuth2Auth`

Query an OAuth 2.0 authorization server to determine the active state of an OAuth 2.0 token and to determine meta-information about this token.

### Parameters

`token` - the access token (base64 string)

`tokenType` - hint to the token type e.g.: `access_token`

`handler` - A handler to receive the event

Return
self