Yes. Iroh itself provides direct QUIC connections. iroh-blobs is a protocol on top of iroh that provides content-addressed data transfer of BLAKE3 hashed data.

What you describe sounds like https://www.dumbpipe.dev/ , a tool/demo built on top of iroh to provide a bidirectional pipe across devices, somewhat like netcat.

Dumbpipe also has a mode where it listens on a port using TCP.

It sounds like you want to basically build dumbpipe for UDP. You can of course use a QUIC stream, but QUIC has an extension, which we support, to send datagrams: https://docs.rs/iroh/latest/iroh/endpoint/struct.Connection....

This basically allows you to opt out of QUIC streams, but you still do get TLS encryption.