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# UDP Options

Configure options for connections that use the User Datagram Protocol.

## Topics

### Creating UDP Connections

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

Accesses the system definition of the User Datagram Protocol.

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

Initializes a default set of UDP connection options.

### Customizing UDP Connections

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

Configures the connection to not send UDP checksums.

### Sending UDP Messages

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

Checks whether a metadata object represents a UDP datagram.

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

Initializes a default UDP message.


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