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  "title" : "CFMessagePortSendRequest Error Codes"
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# CFMessagePortSendRequest Error Codes

Error codes for `CFMessagePortSendRequest`.

## Topics

### Constants

[`var kCFMessagePortSuccess: Int32`](/documentation/CoreFoundation/kCFMessagePortSuccess)

The message was successfully sent and, if a reply was expected, a reply was received.

[`var kCFMessagePortSendTimeout: Int32`](/documentation/CoreFoundation/kCFMessagePortSendTimeout)

The message could not be sent before the send timeout.

[`var kCFMessagePortReceiveTimeout: Int32`](/documentation/CoreFoundation/kCFMessagePortReceiveTimeout)

No reply was received before the receive timeout.

[`var kCFMessagePortIsInvalid: Int32`](/documentation/CoreFoundation/kCFMessagePortIsInvalid)

The message could not be sent because the message port is invalid.

[`var kCFMessagePortTransportError: Int32`](/documentation/CoreFoundation/kCFMessagePortTransportError)

An error occurred trying to send the message.

[`var kCFMessagePortBecameInvalidError: Int32`](/documentation/CoreFoundation/kCFMessagePortBecameInvalidError)

The message port was invalidated.


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