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# http

Blocking HTTP(S) over whatever client the platform already ships. No TLS, DNS
or HTTP framing of our own — the platform ships all three.

| | |
|---|---|
| macOS, iOS | `NSURLSession` (Foundation) |
| Android | `java.net.HttpURLConnection` (JNI, no Java to compile) |
| Linux | libcurl easy interface |
| Windows | WinHTTP |

**One package on every platform.** There is no `http_android`; the transport is
a file inside this package, swapped by the resolver's `_<platform>` override.

A consumer names `http` once, plus the transitive dep of whichever transport it
builds — the same flat-closure rule every package in this repo follows (cpc
resolves imports and link archives against ONE set taken from the consuming
manifest, not from a dependency's own):

```toml
[dependencies]
http   = "*"
stdlib = "*"

[macos.dependencies]
objc = "*"      # NSURLSession; brings -framework Foundation with it

[ios.dependencies]
objc = "*"

[android.dependencies]
jni  = "*"      # java.net.HttpURLConnection
```

Name only the platforms you build for. Miss one and the link says which symbol
it wanted, naming the package.

```cplus
import "http/http" as http;
import "stdlib/result" as result;
import "stdlib/status" as status;
```

## Common case

```cplus
match http::get("https://example.com/feed.json") {
    result::Result[http::Response, http::Error]::Ok(r) => {
        // A non-2xx status is DATA, not an error. 404 is an answer.
        if r.is_success() { parse(r.body.as_byte_view()); }
    }
    result::Result[http::Response, http::Error]::Err(e) => {
        // Transport only: offline, DNS failure, TLS failure, timeout.
        report(e.code, e.message);
    }
}
```

With a method, headers and a body:

```cplus
var req: http::Request = http::Request::new("https://example.com/v1/items",
                                            method: http::Method::Post,
                                            timeout_seconds: 10.0);
let _a: status::Status = req.set_header("Content-Type", to: "application/json");
let _b: status::Status = req.set_body_text("{\"name\":\"widget\"}");
match http::send(req) { ... }
```

## Blocking by design

Every verb blocks the calling thread. **Call it off-main.** In a facet app that
means a service: produce off the UI thread, hop the result home with
`services::run_on_main` before touching a view. There is no async tier in v1.

## Docs

- [docs/tutorial.md](https://github.com/netdur/cplus/blob/v0.0.28/vendor/http/docs/tutorial.md) — fast path
- [docs/guide.md](https://github.com/netdur/cplus/blob/v0.0.28/vendor/http/docs/guide.md) — how / why / gotchas
- [docs/ref.md](https://github.com/netdur/cplus/blob/v0.0.28/vendor/http/docs/ref.md) — API manual

## Remaining platform

ESP32 is not implemented. Its matching native client is
`esp_http_client`; adding it requires an embedded transport that preserves the
same blocking result and error contracts.

## Tests

Unit tests live in `src/http.cplus`.

```
cd vendor/http && cpc test
```

The tests named `net_*` make real requests and need the internet; everything
else runs offline, including the transport-error path (a malformed URL is
rejected by NSURLSession locally, before any DNS).