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# nw_ethernet_channel_t

An object you use to send and receive custom Ethernet frames.

```
typealias nw_ethernet_channel_t = any OS_nw_ethernet_channel
```

## Discussion

Use Ethernet channels to send and receive custom Ethernet frame types over an interface.

Creating Ethernet channels requires the `com.apple.developer.networking.custom-protocol` entitlement.

## Topics

### Managing Ethernet Channels

[`nw_ethernet_channel_create(_:_:)`](/documentation/Network/nw_ethernet_channel_create(_:_:))

Initializes an Ethernet channel on a specific interface with a custom Ethernet type.

[`nw_ethernet_channel_set_queue(_:_:)`](/documentation/Network/nw_ethernet_channel_set_queue(_:_:))

Sets the queue on which all channel events are delivered.

[`nw_ethernet_channel_start(_:)`](/documentation/Network/nw_ethernet_channel_start(_:))

Starts the process of registering the channel.

[`nw_ethernet_channel_cancel(_:)`](/documentation/Network/nw_ethernet_channel_cancel(_:))

Unregisters the channel from the interface.

### Handling State Updates

[`nw_ethernet_channel_set_state_changed_handler(_:_:)`](/documentation/Network/nw_ethernet_channel_set_state_changed_handler(_:_:))

Sets a handler to receive channel state updates.

[`nw_ethernet_channel_state_changed_handler_t`](/documentation/Network/nw_ethernet_channel_state_changed_handler_t)

A handler that delivers Ethernet channel state updates with associated errors.

[`nw_ethernet_channel_state_t`](/documentation/Network/nw_ethernet_channel_state_t)

States indicating whether an Ethernet channel is able to send and receive frames.

### Sending and Receiving Ethernet Frames

[`nw_ethernet_channel_send(_:_:_:_:_:)`](/documentation/Network/nw_ethernet_channel_send(_:_:_:_:_:))

Sends a single Ethernet frame over a channel to a specific Ethernet address.

[`nw_ethernet_channel_send_completion_t`](/documentation/Network/nw_ethernet_channel_send_completion_t)

A handler that indicates when an Ethernet frame has been sent, or if an error was encountered.

[`nw_ethernet_channel_set_receive_handler(_:_:)`](/documentation/Network/nw_ethernet_channel_set_receive_handler(_:_:))

Sets a handler to receive inbound Ethernet frames.

[`nw_ethernet_channel_receive_handler_t`](/documentation/Network/nw_ethernet_channel_receive_handler_t)

A handler that delivers inbound Ethernet frames.

[`nw_ethernet_address_t`](/documentation/Network/nw_ethernet_address_t)

A 48-bit Ethernet address.


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