tools-net-probe

Reachability checks without a general-purpose egress binary. HTTP status via infrastructure-fetcher's SafeHttpClient (SSRF allowlist + byte cap in the type) and TCP connect for port liveness — the replacement for ad-hoc curl and nc, which are denied.

What it is for

Decision core for tools-net-probe. Pure, so the parts that decide what a result means are tested without opening a socket.

Why this exists: curl and nc are denied (they are send-anything-anywhere channels available to any shell call), and denying them without a replacement just means the check stops happening. This is the narrow capability that was actually being used — "is it up, and what did it answer" — with no request body, no custom method, no upload path, and a byte cap on whatever comes back.

Capabilities

crate root

Decision core for tools-net-probe. Pure, so the parts that decide what a result means

Health

Decision core for tools-net-probe. Pure, so the parts that decide what a result means

TcpTarget

Decision core for tools-net-probe. Pure, so the parts that decide what a result means

How to use it

No examples/ target and no doctest in this crate's rustdoc. The tests listed under Verification are the closest executable usage.

Module structure

No public modules: the crate root is its whole surface.

Public surface

`crate root`

No pub use re-exports: every item above is declared in this crate.

Boundary

Reaches into infrastructure.

Shares tier tools with 84 other crates: tools-advisory-reach, tools-archive-guard, tools-artifact-scaffold, tools-ask-ai-core, tools-ask-ais, tools-ask-gemini, tools-book, tools-book-report, … (84 total).

_What this crate deliberately does NOT own is a judgment. No committed registry records one for it, so none is stated here._

Where it sits

Tier flow. Which tiers this crate's own edges cross.

flowchart LR
  n_tools["tools"] --> n_infrastructure["infrastructure"]

Dependencies

Runtime, in this workspace.

Runtime, from outside the workspace.

Development, in this workspace.

Build. None.

Depended on by. Nothing in this workspace.

Signal flow — what reaches this crate, and what it reaches.

flowchart LR
  SELF["tools-net-probe"]
  SELF -->|development| n_tools_cli_conformance["tools-cli-conformance"]
  SELF -->|runtime| n_infrastructure_fetcher["infrastructure-fetcher"]
  classDef self fill:#1f883d,stroke:#1f883d,color:#fff;
  class SELF self;

Feature flags

No Cargo features are defined: every capability is unconditional, so no consumer can receive a half-wired crate.

Targets

Error model

No public error type was detected: no public item declares a type named *Error, and no public signature returns one.

Operational characteristics

No unsafe block, unsafe fn, unsafe impl or unsafe trait was found by the parser anywhere in this crate's source.

Configuration

No environment variable is read with a literal name anywhere in this crate. A variable whose key is computed at run time cannot be listed here, and is not claimed to be absent.

Related capabilities

No workspace crate depends on this one.

Verification

Evidence by module. How often each public module is named by something executable.

What the tests establish, by name:

• exit_codes_distinguish_all_three_outcomes — tests/oracle.rs
• reachable_but_failing_is_not_collapsed_into_unreachable — tests/oracle.rs
• tcp_targets_parse_including_ipv6_and_reject_junk — tests/oracle.rs
• cli_definition_conforms — src/main.rs

Documentation coverage

pie showData
    title Public items with rustdoc
    "Documented" : 3
    "No rustdoc detected" : 4

Metrics

pie showData
    title Public API by kind
    "constant" : 2
    "enum" : 1
    "function" : 3
    "struct" : 1

pie showData
    title Rust source composition
    "Code" : 171
    "Blank or comment" : 50

Generation

Rendered by tools-corpus corpus readme from repository evidence alone, renderer schema 2, lexicon current. No model, network service or database was consulted. Regenerate with tools-corpus corpus readme --write; verify with --check.