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NEL

The HTTP NEL response header is used to configure network request logging.

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

See also

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https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/NEL