---
title: "matchesURL(_:)"
framework: authenticationservices
role: symbol
role_heading: Instance Method
path: "authenticationservices/aswebauthenticationsession/callback/matchesurl(_:)"
---

# matchesURL(_:)

Checks whether a given URL matches the callback object.

## Declaration

```swift
func matchesURL(_ url: URL) -> Bool
```

## Discussion

Discussion Use this method in a browser app that adopts the ASWebAuthenticationWebBrowser API. Other apps can use it for debugging purposes. The following example shows how a browser app’s internal method for determining redirect policies might use matchesURL(_:): // The pre-existing delegate method, which the system calls when the web browser receives a request from an app. func begin(_ request: ASWebAuthenticationSessionRequest!) {     self.request = request

// Load the URL request. }

// The web browser's internal method for determining redirect policies. func myShouldNavigate(to url: URL) -> Bool {     if request.callback.matches(url) {         // Existing API to complete a request.         request.complete(withCallbackURL: url)     }     ... }