Process.spawn/poll/kill/free - non-blocking child processes with no shell: posix_spawn on macOS (process.ll), CreateProcessW with MSVC-quoted arguments and no console window on Windows (process_win.ll), linked only when a program uses Process.*. Http.save_to streams a response body into a file (NSURLSession with a run-time delegate class on macOS, the WinHTTP read loop on Windows); Http.received / Http.expected report progress while it is pending. Freeing a pending request cancels it and parks the slot until the worker has finished. App.window_hide / App.window_show take the game's window off the screen and back without closing it; the run goes on while hidden. Docs, examples, tests and a changeset. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
25 lines
915 B
Markdown
25 lines
915 B
Markdown
---
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id: http-expected
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name: Http.expected
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category: http
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kind: namespace-method
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tokens: Http.expected
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sig: Http.expected(handle) -> int
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tip: The body length the server announced, or -1.
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order: 18
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ns: Http
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member: expected
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---
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Returns the length of the response body as the server announced it (<code>Content-Length</code>), or <code>-1</code> while that is not known. For a request given <a href="http-save_to.html"><code>Http.save_to</code></a> it is known as soon as the headers arrive, and stays <code>-1</code> for a reply sent without a length (chunked) — draw an indeterminate bar then. For an ordinary in-memory request it is <code>-1</code> until the reply lands, then the body length.
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```ludic
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program Demo {
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entry {
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let h = Http.open("GET", "https://example.com/big.bin")
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Http.save_to(h, "big.bin.part")
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Http.send(h)
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print(Http.expected(h)) # -1: nothing has arrived yet
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}
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}
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```
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