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# domain

An `NSString` object containing the domain for the cookie.

```
static let domain: HTTPCookiePropertyKey
```

## Discussion

If this cookie attribute is missing, the domain is inferred from the value for `NSHTTPCookieOriginURL`. If you do not specify a value for `NSHTTPCookieOriginURL`, you *must* specify a value for `NSHTTPCookieDomain`.

---

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