telnet www.yahoo.co.jp 80 GET / HTTP/1.0[Enter] Host: www.yahoo.co.jp[Enter] [Enter]
すると出力結果は次のようになります。
HTTP/1.1 200 OK Server: nginx Date: Sat, 21 Jun 2014 21:22:07 GMT Content-Type: text/html; charset=UTF-8 Connection: close P3P: policyref=http://privacy.yahoo.co.jp/w3c/p3p_jp.xml, CP=CAO DSP COR CUR ADM DEV TAI PSA PSD IVAi IVDi CONi TELo OTPi OUR DELi SAMi OTRi UNRi PUBi IND PHY ONL UNI PUR FIN COM NAV INT DEM CNT STA POL HEA PRE GOV Cache-Control: private, no-cache, no-store, must-revalidate Expires: -1 Pragma: no-cache X-XRDS-Location: https://open.login.yahooapis.jp/openid20/www.yahoo.co.jp/xrds Vary: Accept-Encoding