view code return

Ejemplo de Cabecera de Requerimiento:

user-agent CCBot/2.0 (https://commoncrawl.org/faq/)
accept text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
If-Modified-Since Tue, 25 Sep 2018 12:36:47 UTC
host uex30.unex.es
connection Keep-Alive
Accept-Encoding gzip
content-length 0