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# init(send:receive:components:)

Initializes a newly allocated `NSPortMessage` object to send given data on a given port and to receiver replies on another given port.

```
init(send sendPort: Port?, receive replyPort: Port?, components: [Any]?)
```

## Parameters

`sendPort`

The port on which the message is sent.

`replyPort`

The port on which replies to the message arrive.

`components`

The data to send in the message. `components` should contain only `NSData` and `NSPort` objects, and the contents of the `NSData` objects should be in network byte order.

## Return Value

An `NSPortMessage` object initialized to send `components` on `sendPort` and to receiver replies on `receivePort`.

## Discussion

An `NSPortMessage` object initialized with this method has a message identifier of 0.

This is the designated initializer for `NSPortMessage`.

## See Also

[`msgid`](/documentation/Foundation/PortMessage/msgid)

Returns the identifier for the receiver.

  [Distributed Objects Programming Topics](https://developer.apple.com/library/archive/documentation/Cocoa/Conceptual/DistrObjects/DistrObjects.html#//apple_ref/doc/uid/10000102i)


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