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# CFHTTPMessageSetHeaderFieldValue(_:_:_:)

Sets the value of a header field in an HTTP message.

```
func CFHTTPMessageSetHeaderFieldValue(_ message: CFHTTPMessage, _ headerField: CFString, _ value: CFString?)
```

## Parameters

`message`

The message to modify.

`headerField`

The header field to set.

`value`

The value to set.

---

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