vertx / io.vertx.reactivex.ext.auth.oauth2 / OAuth2Auth / rxIntrospectToken

# rxIntrospectToken

`open fun rxIntrospectToken(token: String): Single<AccessToken>`

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)

Return

`open fun rxIntrospectToken(token: String, tokenType: String): Single<AccessToken>`

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`

Return