libntirpc-sys 0.3.4

• Add reusable client::Client configuration and a safe RpcCodec trait, with
  the built-in WrapString<N> codec and borrowed network/memory XDR stream views.
  Encode directly without extra buffers or input copies; contain codec panics
  at the C boundary and reject nested RPC calls from codecs.

• Add a safe synchronous string RPC client with managed initialization and
  result ownership; remove unsafe code from the hello client and README example.

• Keep synchronous RPC request state alive until active and queued reply
  callbacks finish, including across retries, errors, and timeouts.

• Fix an IPv4 broadcast address overread and initialize broadcast address
  storage, with native IPv4/IPv6 regression coverage.

• Select stable Rust explicitly in the main CI job.

• Remove deleted vendored sources from incremental native builds using a source
  manifest, preserving generated files and unchanged source timestamps.

• Add separate allocation and throughput benchmarks, native/Rust allocation
  accounting, and state-machine fuzzing with native/Rust ASan coverage and leak
  detection. Gate allocation invariants and bounded fuzz campaigns in CI.

• Borrow encoded XDR output without copying, reuse encoder/decoder allocations
  through reset/rewind/refill, and copy each fuzz input once for all decoders.

• Add safe memory XDR string encoders/decoders and an owning XdrString that
  frees with ntirpc's allocator; reuse them in fuzzing and hello examples.

• Enforce unsafe block comments and unsafe function contracts, with generated
  binding exceptions confined to their own module.

• Keep fuzzing XDR stream self-pointers stable, avoid raw byte-slice casts and
  shared mutable free streams, and document FFI ownership and lifetime rules.

• Use Rust-owned request allocations and safe UDP socket setup in the examples;
  install server callbacks before enabling event dispatch and free decoded
  strings through ntirpc's allocator.

Published crate: libntirpc-sys 0.3.4