UnShell is a tree-addressed RPC and data-exchange protocol designed for a hierarchy of endpoints. It provides a lightweight way to route calls, streams, and faults through a tree-structured network of nodes.

Features

• Tree-Based Routing: Path-based addressing with longest-prefix matching.
• RPC and Streaming: Supports simple request-response (Call) and bidirectional streaming (Data).
• Hierarchical Control: Authority-restricted downward calls and upstream-only faults.
• Introspection: Mandatory discovery mechanism for endpoints and leaves.
• no_std Compatible: Core protocol implementation is designed for constrained environments.

Architecture

The protocol is organized into:

• unshell: Core protocol logic, framing, and routing.
• ush-treetest: A testbed implementation for validating the protocol.
• ush-obfuscate: Utilities for code obfuscation.
• base62: Encoding utilities.

Getting Started

Build

cargo build

Run Tests

cargo test

Protocol Specification

For detailed information on the wire format and behavioral invariants, please refer to PROTOCOL.md.