test(iroh-relay): integration tests for embedding the relay

Adds two integration tests that demonstrate embedding the relay
inside an external HTTP server, one with axum and one with hyper.

Author: Frando

Cargo.lock

@@ -121,6 +121,8 @@ tokio = { version = "1", features = [
 tracing-subscriber = { version = "0.3", features = ["env-filter"] }
 serde_json = "1"
 n0-tracing-test = "0.3"
+# Used by the embedding integration tests.
+axum = { version = "0.8", features = ["ws"] }
 
 [build-dependencies]
 cfg_aliases = "0.2.1"

iroh-relay/Cargo.toml

@@ -52,12 +52,14 @@ use crate::{
     },
 };
 
-// type BytesBody = http_body_util::Full<hyper::body::Bytes>;
-pub(super) type BytesBody = Box<
+/// Boxed HTTP response body produced by [`RelayServiceWithNotify`].
+pub type BytesBody = Box<
     dyn 'static + Send + Unpin + hyper::body::Body<Data = hyper::body::Bytes, Error = Infallible>,
 >;
-pub(super) type HyperError = Box<dyn std::error::Error + Send + Sync>;
-pub(super) type HyperResult<T> = std::result::Result<T, HyperError>;
+/// Boxed error type returned from [`RelayServiceWithNotify`]'s [`hyper::service::Service`] impl.
+pub type HyperError = Box<dyn std::error::Error + Send + Sync>;
+/// Result alias for HTTP responses produced by [`RelayServiceWithNotify`].
+pub type HyperResult<T> = std::result::Result<T, HyperError>;
 pub(super) type HyperHandler = Box<
     dyn Fn(Request<Incoming>, ResponseBuilder) -> HyperResult<Response<BytesBody>>
         + Send