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Content

Each message names the media type of the codec that reads or writes it; the root defaultContentType appears only when all of them agree.

The media type is the codec's CONTENT_TYPE: application/json, application/cbor or application/msgpack. It follows the codec chosen for the mounting, at whichever level chose it. A message that no codec reads or writes names none: a type that carries its own bytes, on a byte lane. A reader applies the root defaultContentType to each message that names no media type. So it stands only while every message names the same one; a second format, or a message without one, leaves it out. A message shared by several registrations takes the media type of the first.

Example​

The example needs the cbor feature:

cargo test --example asyncapi_content_type --features macros,memory,asyncapi,cbor
examples/asyncapi_content_type.rs
fn app() -> impl App {
    RustStream::new(AppInfo::new("plant", "0.1.0"))
        // The default codec: `Order` is `application/json`.
        .with_broker(MemoryBroker::new(), |b| {
            b.include(accept);
        })
        // The scope's codec: `Reading` is `application/cbor`.
        .with_broker_codec(MemoryBroker::new(), CborCodec, |b| {
            b.include(record);
        })
}