Swift

The Moq Swift package: de-prefixed types, AsyncSequence on every consumer, Sendable handles, and Task cancellation that reaches the native side. It depends on MoqFFI, which ships a prebuilt XCFramework with arm64 slices for iOS 15+, the iOS Simulator, and macOS 12.3+.

dependencies: [
    .package(url: "https://github.com/moq-dev/moq-swift", from: "<version>"),   // latest: see the badge above
],
targets: [
    .target(name: "MyApp", dependencies: [.product(name: "Moq", package: "moq-swift")]),
]

import Moq

// Subscribe. The sequence is live, so run it in its own Task.
let client = Client()
let session = try await client.connect(to: "https://relay.example.com")

for try await announcement in try session.consumer.announced(prefix: "live/") {
    for try await catalog in try announcement.broadcast.subscribeCatalog() {
        print(catalog)
    }
}

// Publish encoded frames, or raw pixels with the codec inside the binding (VideoToolbox).
// opusInit, packet, pts, and rgba come from your encoder or capture source.
let broadcast = try session.publisher.createBroadcast(path: "my-stream.hang")
let audio = try broadcast.publishMedia(format: "opus", initData: opusInit)
try audio.writeFrame(packet, timestampUs: 20_000)

let video = try broadcast.publishVideo(
    input: VideoEncoderInput(format: .rgba, width: 1280, height: 720, framerate: 30),
    output: VideoEncoderOutput(codec: .h264, track: "camera", bitrate: nil, gop: nil, kind: .auto)
)
try video.write(VideoFrame(timestampUs: pts, data: rgba))

session.shutdown()

For a self-signed relay on your own test network, client.setTlsVerify(false) accepts any certificate; prefer setTlsRoots or a fingerprint anywhere else.

Server binds, generates or loads TLS, and hands you each request to accept() or reject(code:). JSON tracks take Codable types (publishJsonSnapshot(name:of:), subscribeJsonStream(name:as:)), and the rest of the shared feature list maps one to one: fetchGroup/fetchMediaGroup, dynamic(), appendDatagram/ datagrams, setCatalogSection, used()/unused(). MoqError.isAuth and isShutdown classify errors.

• API reference: Swift Package Index (DocC)
• Source: swift/; just swift check builds and tests on a Mac
• Packages SPM resolves: moq-dev/moq-swift, moq-dev/moq-swift-ffi