socket2 0.6.5: socket2::Socket

# This file is automatically @generated by Cargo.
# It is not intended for manual editing.
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[[package]]
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version = "0.1.0"
dependencies = [
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[package]
name = "socket2-sample"
version = "0.1.0"
edition = "2021"
publish = false

[dependencies]
socket2 = "=0.6.5"

Clean-room public code sample — generation instructions

Write a brand-new, minimal, self-contained code sample in this clean-room directory.
Do not copy, paraphrase, or reference any existing project source. Work only from this spec.

A csx.json manifest scaffold already exists. Do not recreate it from memory. Preserve its case.goal, packages and symbols; fill its empty case.contract with exact assertions and correct its environment, commands and verifierAdapter for the files you generate.

Goal: verify socket2::Socket in pkg:cargo/socket2@0.6.5
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:cargo/socket2@0.6.5
Demonstrate these symbols/APIs:
  - socket2::Socket

Rules:
  - One focused purpose; the smallest project that proves the goal.
  - Include a contract test (test/contract.*) that runs OFFLINE and exits 0 exactly when the goal behavior works.
  - Pin every dependency with a lockfile so resolution is reproducible.
  - No secrets, credentials, or tokens. No real URLs (only example.com or localhost). No absolute paths.
  - No personal names, emails, company names, or project identifiers of any kind.
  - No binaries and no generated output (node_modules, dist, target, venv, .git, .env).
  - Keep it under 200 files and 256KB packed.

{"case":{"caseId":"case:sha256:e74f60f36394cf27930b01e569aee4b2ca1fc1e2b75686c32047e388228cef12","contract":["socket2::Socket creates an IPv4 TCP stream socket","socket2::Socket sets non-blocking mode and reuse address","socket2::Socket binds to IPv4 localhost address and reports local addr"],"goal":"verify socket2::Socket in pkg:cargo/socket2@0.6.5","kind":"HOW","packages":["pkg:cargo/socket2@0.6.5"],"schemaVersion":1,"symbols":["socket2::Socket"]},"contractCommand":["cargo","run","--offline"],"environment":{"arch":"x64","distro":"alpine","ecosystem":"cargo","language":"rust","libc":"musl","os":"linux","packageManager":"cargo","schemaVersion":1},"license":"MIT-0","packages":["pkg:cargo/socket2@0.6.5"],"schemaVersion":1,"subject":"pkg:cargo/socket2@0.6.5","symbols":["socket2::Socket"],"verifierAdapter":"cargo@1"}

{
  "schemaVersion": 1,
  "goal": "verify socket2::Socket in pkg:cargo/socket2@0.6.5",
  "kind": "HOW",
  "packages": [
    "pkg:cargo/socket2@0.6.5"
  ],
  "symbols": [
    "socket2::Socket"
  ]
}

use socket2::{Domain, Protocol, Socket, Type};
use std::net::SocketAddr;

fn main() {
    let socket = Socket::new(Domain::IPV4, Type::STREAM, Some(Protocol::TCP))
        .expect("failed to create IPv4 TCP socket");

    socket.set_nonblocking(true).expect("failed to set non-blocking");
    socket.set_reuse_address(true).expect("failed to set reuse address");

    let addr: SocketAddr = "127.0.0.1:0".parse().expect("failed to parse socket address");
    socket.bind(&addr.into()).expect("failed to bind socket");

    let local_addr = socket.local_addr().expect("failed to get local address");
    assert!(local_addr.as_socket_ipv4().is_some());

    let error = socket.take_error().expect("failed to query socket error");
    assert!(error.is_none());

    println!("socket2::Socket verification successful");
}