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 Thu, 24 May 2018 15:48:47 GMT
host extractes.fbg.ub.edu
connection Keep-Alive
accept-encoding gzip