view code return

Request Header Example

x-forwarded-for 54.162.123.74
remote_addr 54.162.123.74
host sw.gufe.edu.cn
connection close
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
if-modified-since Sat, 21 Apr 2018 16:52:25 GMT