# send(_:lastMessage:metadata:other:) Send data on a connection. ``` func send(_ content: Data, lastMessage: Bool = false, metadata: NWProtocolFramer.Message? = nil, @ProtocolMetadataBuilder other builder: () -> [NWProtocolMetadata] = {[]}) async throws where ApplicationProtocol == Framer, T : FramerProtocol ``` ## Parameters `content` The data to send. `lastMessage` The last message to send. `metadata` The metadata about the data being sent. `builder` A builder for specifying metadata about the content to send. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)