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Confusing output when using `--retry-connrefused`

From: Matthias Endler via curl-users <curl-users_at_cool.haxx.se>
Date: Thu, 19 Mar 2020 13:09:17 +0100

Something is odd when I try to use `--retry-connrefused`.
Consider this request:
```
curl --write-out '%{http_code}' --output /dev/null --silent http://example.com
200
```
Adding --retry-connrefused 1, I get the following output:

```
curl --write-out '%{http_code}' --output /dev/null --silent --retry-connrefused 1 http://example.com
000<!doctype html>
<html>
<head>
    <title>Example Domain</title>
    <meta charset="utf-8" />
    <meta http-equiv="Content-type" content="text/html; charset=utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1" />
    <style type="text/css">
    body {
        background-color: #f0f0f2;
        margin: 0;
        padding: 0;
        font-family: -apple-system, system-ui, BlinkMacSystemFont, "Segoe UI", "Open Sans", "Helvetica Neue", Helvetica, Arial, sans-serif;
    }
    div {
        width: 600px;
        margin: 5em auto;
        padding: 2em;
        background-color: #fdfdff;
        border-radius: 0.5em;
        box-shadow: 2px 3px 7px 2px rgba(0,0,0,0.02);
    }
    a:link, a:visited {
        color: #38488f;
        text-decoration: none;
    }
    @media (max-width: 700px) {
        div {
            margin: 0 auto;
            width: auto;
        }
    }
    </style>
</head>
<body>
<div>
    <h1>Example Domain</h1>
    <p>This domain is for use in illustrative examples in documents. You may use this
    domain in literature without prior coordination or asking for permission.</p>
    <p>More information...</p>
</div>
</body>
</html>
200%
```
Is that expected behavior or did I trigger a bug?
Cheers,
Matthias

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Received on 2020-03-19