c-ares-sys 0.3.0

Low-level bindings to the c-ares library
Documentation

Bindings for c-ares, mostly autogenerated by rust-bindgen.

To create ffi.rs, do this:

bindgen -l cares -match ares -o src/ffi.rs /usr/include/ares.h

... and then:

  • add a few type definitions for OS types at the top of the file
    • Compare with the current version to see what's needed
  • add unsafe to the function type declarations for ares_sock_state_cb, ares_callback, ares_host_callback, ares_nameinfo_callback, ares_sock_create_callback
    • Any non-trivial implementations of these callbacks will involve dereferencing raw pointer parameters
  • remove ares_fds and ares_process
    • These both use fd_set.
    • Cursory search didn't find an existing Rust representation of this structure
    • Since the high-level API doesn't use either of these functions, it's simplest just to pretend they're not there