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Exemplo da Cebeceira do Pedido

host repositorio.upf.br
accept-encoding x-gzip, gzip, deflate
user-agent CCBot/2.0 (http://commoncrawl.org/faq/)
accept text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
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x-forwarded-for 54.80.103.120