Headers before http request are:
Connection: keep-alive
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)
Returned headers are:
Connection: keep-alive, TE, close
Host: localhost
TE: deflate,gzip;q=0.3
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)