Headers: NEL
NEL header
Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The HTTP NEL response header is used to configure network request logging.
| Header type | Response header |
|---|
Syntax
NEL: { "report_to": "name_of_reporting_group", "max_age": 12345, "include_subdomains": false, "success_fraction": 0.0, "failure_fraction": 1.0 }
Specifications
| Specification |
|---|
| Network Error Logging> # nel-response-header> |
Browser compatibility
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Opera | Safari | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | WebView Android | WebView on iOS | |
NEL |
71 | 79 | No | 58 | No | 71 | No | 50 | No | 10.2 | 71 | No |
See also
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https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/NEL
