=== HTTP code : 206 ===

Response headers
================
HTTP/2 301 
date: Sat, 10 May 2025 02:17:10 GMT
content-type: text/html; charset=UTF-8
location: https://docs.nrel.gov/docs/fy18osti/70122.pdf
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server: cloudflare
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HTTP/1.1 206 Partial Content
Date: Sat, 10 May 2025 02:17:10 GMT
Last-Modified: Mon, 16 Oct 2017 19:41:31 GMT
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Request headers
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Host: docs.nrel.gov
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Accept: */*
Referer: https://greenmanual.rutgers.edu
Connection: close
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Link is valid.