Networking Example — Rust

Source: apps/rust/heap/example_net/src/lib.rs (also apps/rust/zeroheap/example_net/src/lib.rs) | WASM Demo

Exercises the full networking stack with a pass/fail test framework: netif configuration, DNS resolution, TCP/UDP sockets, HTTP client (GET/POST/PUT), SNTP time sync, MQTT pub/sub, and embedded HTTP server.

Language-specific patterns

This example uses the ove Rust crate with no_std support. Error handling uses Result<T, ove::Error> with per-op narrow error sets. Shared state uses atomics; cross-thread kernel-object sharing uses Arc<T> in heap mode (from ove::heap::Arc) and ove::shared! cells (InitCell<T>) in zero-heap mode. #[ove::main] exports the C-ABI entry symbol.

See the overview for architecture details and the full API list.

How to build

# Native POSIX
make host.posix.example_net_rust
make configure && make download && make && make run

# WASM (browser)
make wasm.posix.example_net_rust
make configure && make download && make && make run