https://github.com/orlandos-nl/SSEKit

Support for Server-Sent Events on AsyncSequences
https://github.com/orlandos-nl/SSEKit

Last synced: 2 months ago
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Support for Server-Sent Events on AsyncSequences

• Host: GitHub
• URL: https://github.com/orlandos-nl/SSEKit
• Owner: orlandos-nl
• Created: 2024-06-18T21:40:17.000Z (5 months ago)
• Default Branch: main
• Last Pushed: 2024-06-30T16:27:23.000Z (5 months ago)
• Last Synced: 2024-07-15T01:40:11.197Z (4 months ago)
• Language: Swift
• Size: 11.7 KB
• Stars: 18
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
## SSEKit

Support for Server-Sent Events in Swift through AsyncSequence.

### Usage with Hummingbird 2

Hummingbird 2's ResponseBody is already conforming to `AsyncSequence`, so you can use the APIs easily.

There's [Example Code](https://github.com/orlandos-nl/SSEKit/tree/main/Example) in this repository for Hummingbird 2.

```swift

import SSEKit

router.get("events") { req, context in

  // Get any `AsyncSequence`. We'll use AsyncStream to make it easy

  let (events, continuation) = AsyncStream.makeStream()

  // TODO: Emit events into `continuation` using your logic

  // This logic emits the current time as ISO8601

  let now = ISO8601DateFormatter().string(from: Date())

  continuation.yield(ServerSentEvent(data: SSEValue(string: now)))

  // Closing the stream is important, as omitting this will let the body hang indefinitely

  continuation.finish()

  let body = ResponseBody(asyncSequence: events.mapToByteBuffer(allocator: context.allocator))

  return Response(status: .ok, headers: [.contentType: "text/event-stream"], body: body)

}

```