28 lines
809 B
Markdown
28 lines
809 B
Markdown
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Expect-CT
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=========
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[](https://travis-ci.org/helmetjs/expect-ct)
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The `Expect-CT` HTTP header tells browsers to expect Certificate Transparency. For more, see [this blog post](https://scotthelme.co.uk/a-new-security-header-expect-ct/) and the [article on MDN](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Expect-CT).
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Usage:
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```javascript
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const expectCt = require('expect-ct')
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// Sets Expect-CT: max-age=123
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app.use(expectCt({ maxAge: 123 }))
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// Sets Expect-CT: enforce, max-age=123
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app.use(expectCt({
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enforce: true,
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maxAge: 123
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}))
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// Sets Expect-CT: enforce, max-age=30, report-uri="https://example.com/report"
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app.use(expectCt({
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enforce: true,
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maxAge: 30,
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reportUri: 'https://example.com/report'
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}))
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```
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