---
title: "nw_udp_options_set_prefer_no_checksum(_:_:)"
framework: network
role: symbol
role_heading: Function
path: "network/nw_udp_options_set_prefer_no_checksum(_:_:)"
---

# nw_udp_options_set_prefer_no_checksum(_:_:)

Configures the connection to not send UDP checksums.

## Declaration

```swift
func nw_udp_options_set_prefer_no_checksum(_ options: nw_protocol_options_t, _ prefer_no_checksum: Bool)
```

## Discussion

Discussion UDP checksums are optional when the datagrams are sent over IPv4. This option configures UDP to not set checksums on these datagrams, but has no effect on IPv6.

## See Also

### Functions

- [nw_advertise_descriptor_copy_txt_record_object(_:)](network/nw_advertise_descriptor_copy_txt_record_object(_:).md)
- [nw_advertise_descriptor_create_application_service(_:)](network/nw_advertise_descriptor_create_application_service(_:).md)
- [nw_advertise_descriptor_create_bonjour_service(_:_:_:)](network/nw_advertise_descriptor_create_bonjour_service(_:_:_:).md)
- [nw_advertise_descriptor_get_application_service_name(_:)](network/nw_advertise_descriptor_get_application_service_name(_:).md)
- [nw_advertise_descriptor_get_no_auto_rename(_:)](network/nw_advertise_descriptor_get_no_auto_rename(_:).md)
- [nw_advertise_descriptor_set_no_auto_rename(_:_:)](network/nw_advertise_descriptor_set_no_auto_rename(_:_:).md)
- [nw_advertise_descriptor_set_txt_record(_:_:_:)](network/nw_advertise_descriptor_set_txt_record(_:_:_:).md)
- [nw_advertise_descriptor_set_txt_record_object(_:_:)](network/nw_advertise_descriptor_set_txt_record_object(_:_:).md)
- [nw_browse_descriptor_create_application_service(_:)](network/nw_browse_descriptor_create_application_service(_:).md)
- [nw_browse_descriptor_create_bonjour_service(_:_:)](network/nw_browse_descriptor_create_bonjour_service(_:_:).md)
- [nw_browse_descriptor_get_application_service_name(_:)](network/nw_browse_descriptor_get_application_service_name(_:).md)
- [nw_browse_descriptor_get_bonjour_service_domain(_:)](network/nw_browse_descriptor_get_bonjour_service_domain(_:).md)
- [nw_browse_descriptor_get_bonjour_service_type(_:)](network/nw_browse_descriptor_get_bonjour_service_type(_:).md)
- [nw_browse_descriptor_get_include_txt_record(_:)](network/nw_browse_descriptor_get_include_txt_record(_:).md)
- [nw_browse_descriptor_set_include_txt_record(_:_:)](network/nw_browse_descriptor_set_include_txt_record(_:_:).md)