Regex Tester & Validator

Parses IIS7 W3C extended log file lines into named capture groups for ingestion into FluentD or similar log pipelines. Extracts date, time, server/client IP addresses, HTTP method, URI stem, query string, port, user agent, status/substatus/Win32 status codes, bytes sent and received, and response time. Fields are whitespace-delimited, with the final timetaken value optional at end of line.