network-error-logging

Self-hosted collector for browser security reports: CSP, NEL, COOP, COEP and other Reporting API reports.

Express middleware to collect Reporting API reports - CSP, COOP, COEP, Permissions-Policy, Document-Policy, NEL, crash, deprecation and intervention reports

Middleware for setting the NEL HTTP response header

Sample application experimenting with Report-To header and receiving reports (Report API)

Report Relay accepts the security reports browsers and mail servers send — Reporting API batches, legacy CSP report-uri bodies, network error logs and SMTP TLS reports — and emits one OpenTelemetry log record per report, so they land in the existing Loki, Tempo and Grafana stack instead of a separate collector per report type.

Collect network reports and print them to file

Cannot fetch RPC. URLNetwork error

HTTP network error logging(NEL) middleware

NEL Report Collector in Cloudflare Worker.

Bachelor Thesis' Text - Analysis of NEL technology deployment on the internet