Testing a small http-client on Linux using no_std & embedded reqwless.
Document RNG backends in README with usage examples
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README.md
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README.md
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- `backend-rustix` is available as an alternate transport backend
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- DNS mode is selected independently via `dns-getaddrinfo` or `dns-ip-only`
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- Alternate DNS mode `dns-ip-only` rejects hostnames and only accepts literal IP hosts
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- HTTPS is optional via `--features https` and currently uses `TlsVerify::None` (insecure baseline)
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- HTTPS is optional via `--features https` and requires an RNG backend
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- HTTPS currently uses `TlsVerify::None` (insecure baseline)
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- RNG backends: `rng-dummy` (fixed seed), `rng-dev-urandom` (reads `/dev/urandom`), `rng-getrandom` (syscall)
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- Uses fixed-size stack buffers for request/response and output chunks
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- Performs best-effort low-allocation operation (no `String`/`Vec` in app code)
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# Default build: posix-libc backend + getaddrinfo DNS mode
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cargo run -- http://example.com
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# HTTPS on default backend/DNS mode
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cargo run --features https -- https://example.com
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# HTTPS with dev-urandom RNG (recommended for production)
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cargo run --no-default-features --features backend-posix-libc,dns-getaddrinfo,https,rng-dev-urandom -- https://example.com
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# HTTPS with getrandom syscall RNG
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cargo run --no-default-features --features backend-posix-libc,dns-getaddrinfo,https,rng-getrandom -- https://example.com
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# HTTPS with dummy RNG (testing only, insecure)
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cargo run --no-default-features --features backend-posix-libc,dns-getaddrinfo,https,rng-dummy -- https://example.com
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# Minimal DNS mode (literal IP hosts only)
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cargo run --no-default-features --features backend-posix-libc,dns-ip-only -- http://93.184.216.34