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# VZVirtioSocketConnection

A port-based connection between the guest operating system and the host computer.

```
class VZVirtioSocketConnection
```

## Overview

A [`VZVirtioSocketConnection`](/documentation/Virtualization/VZVirtioSocketConnection) object contains the port information for the guest operating system and host computer. You don’t create connection objects directly. When the guest operating system initiates a connection, the virtual machine creates the connection object and passes it to the appropriate [`VZVirtioSocketListener`](/documentation/Virtualization/VZVirtioSocketListener) object, which forwards the object to its delegate. When the virtual machine opens a connection to a guest port, the [`connect(toPort:)`](/documentation/Virtualization/VZVirtioSocketDevice/connect(toPort:)) method (Objective-C) or [`connect(toPort:completionHandler:)`](/documentation/Virtualization/VZVirtioSocketDevice/connect(toPort:completionHandler:)) method (Swift) pass the connection object to your completion handler.

## Topics

### Getting the connection details

[`sourcePort`](/documentation/Virtualization/VZVirtioSocketConnection/sourcePort)

The port number of the system that opened the connection.

[`destinationPort`](/documentation/Virtualization/VZVirtioSocketConnection/destinationPort)

The destination port number of the connection.

[`fileDescriptor`](/documentation/Virtualization/VZVirtioSocketConnection/fileDescriptor)

The file descriptor to use when sending data.

### Closing the connection

[`close()`](/documentation/Virtualization/VZVirtioSocketConnection/close())

Close the file descriptor associated with the socket.


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