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http-expected.html

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+<title>Http.expected — Ludic</title>
+<meta name="description" content="The body length the server announced, or -1.">
+<link rel="stylesheet" href="base.css">
+<link rel="stylesheet" href="docs.css">
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+<header class="nav"><div class="wrap nav-in"><a class="brand" href="index.html"><span class="logo">L</span> Ludic</a><button class="nav-toggle" aria-label="Toggle menu" aria-expanded="false">☰</button><nav class="nav-links"><a href="index.html">Home</a><a href="api.html">API Reference</a><a class="nav-cta" href="https://git.workshopsoft.io/workshopsoft/ludic">Source ↗</a></nav></div></header>
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+  <div class="crumbs"><a href="api.html">API Reference</a> <span>›</span> <a href="ns-http.html">Http</a> <span>›</span> <span class="here">Http.expected</span></div>
+  <div class="item-head">
+    <span class="kind-badge kind-method">method</span>
+    <h1 id="top">Http.expected</h1>
+  </div>
+  <code class="sig">Http.expected(handle) -&gt; int</code>
+  <div class="desc"><p>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.</p></div>
+  
+  <div class="examples"><h2>Example</h2><pre data-lang="ludic">program Demo {
+  entry {
+    let h = Http.open("GET", "https://example.com/big.bin")
+    Http.save_to(h, "big.bin.part")
+    Http.send(h)
+    print(Http.expected(h))   # -1: nothing has arrived yet
+  }
+}</pre></div>
+  
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