libaria2-rs

Provides unsafe rust bindings for aria2.

Goals and non-goals

• Providing unsafe bindings to the official libaria2 API.
• Providing a safe wrapper around these unsafe bindings.
• Not being a Rust version of aria2c.
• Not rewriting aria2 in Rust.

Roadmap

(unsafe) refers to libaria2-sys whereas (safe) refers to libaria2.

• [x] (unsafe) Link to the installed libaria2.so.
• [x] (unsafe) Provide bindings to all functions and opaque types.
• [x] (safe) Safe context and session.
• [x] (safe) DownloadHandle must live only for one poll.
• [ ] (unsafe) Provide access to all fields of opaque types.
• [ ] (unsafe) Allow closure instead of function for the event callback.
• [ ] (unsafe) Avoid copying as much as possible at the FFI frontier.
• [ ] (safe) Avoid copying as much as possible between the unsafe bindings and the safe wrapper.
• [ ] (unsafe & safe) Add the documentation from the original library.
• [ ] (unsafe) Support for windows

Testing

Since libaria2 make heavy use of static objets and don't seem to be able to be init and deinit multiple times in the same process, tests are run in a different process (1 process per test).

The special harness that forks and wait for the test result has some limitations:

• It doesn't support non-unix platforms (because of the use of fork).
• It only report a success or a failure without details.

Thanks to this harness, you can just cargo test like usual on unix but you'll need the workaround to inspect any failure.

Workaround

You can still run 1 test and disable the harness to have it run like a normal test.

For example:

NO_HARNESS=1 cargo test --test ffi session_create