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    network-error-logging
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    1.2.1 • Public • Published

    Network Error Logging

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    This is Express middleware to set the NEL HTTP response header. You can read more about it here.

    To use:

    const NEL = require('network-error-logging')
     
    // ...
     
    app.use(NEL({
        report_to: 'endpoint-1', // REQUIRED to register. OPTIONAL if intention is to remove a previous registration. defined in the Report-To header
        max_age: 31536000, // REQUIRED. seconds
        include_subdomains: true, // OPTIONAL
        success_fraction: 0.5, // OPTIONAL. sampling rate
        failure_fraction: 0.5, // OPTIONAL. sampling rate
        request_headers: ["If-None-Match"], // OPTIONAL. request headers whose names and values are included in the network error reports
        response_headers: ["ETag"] // OPTIONAL. response headers whose names and values are included in the network error reports
    }))

    For further documentation on each field, see https://w3c.github.io/network-error-logging/#nel-response-header.

    This header is best set with a previously defined Report-To group. This module is a great way to do that.

    https://report-uri.com/ is a great reporting platform for monitoring CSP, NEL, etc. error logs.

    License

    FOSSA Status

    Install

    npm i network-error-logging

    DownloadsWeekly Downloads

    497

    Version

    1.2.1

    License

    MIT

    Unpacked Size

    8.55 kB

    Total Files

    7

    Last publish

    Collaborators

    • cherryjimbo