HTTP ヘッダ
作成 : 2003/03/18
tcpdump で HTTP ヘッダを見る
tcpdump を使用して HTTP ヘッダを見るには、次のようにする。 -s（snaplen）は適当な数値を指定しておく。
# tcpdump -X -s 500 host webserver port 80
IE 6.0 <---> Apache Web サーバ [HTTP/1.1]
リクエストヘッダ
GET http://www.example.com/ HTTP/1.1 Accept: */* Accept-Language: ja Accept-Encoding: gzip, deflate User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 4.0) Host: www.example.com Connection: Keep-Alive
レスポンスヘッダ
HTTP/1.1 200 OK Date: Mon, 10 Mar 2003 07:40:13 GMT Server: Apache Last-Modified: Mon, 10 Mar 07:37:57 GMT ETag: "62eab-59-3e6c40d5" Accept-Ranges: bytes Content-Length: 89 Keep-Alive: timeout=15, max=100 Connection: Keep-Alive Content-Type: text/html; charset=euc-jp
IE 6.0 <---> Apache Web サーバ [HTTP/1.0]
リクエストヘッダ
GET http://www.example.com/ HTTP/1.0 Accept: */* Accept-Language: ja User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 4.0) Host: www.example.com Connection: Keep-Alive
レスポンスヘッダ
HTTP/1.1 200 OK Date: Mon, 10 Mar 2003 07:40:13 GMT Server: Apache Last-Modified: Mon, 10 Mar 07:37:57 GMT ETag: "62eab-59-3e6c40d5" Accept-Ranges: bytes Content-Length: 89 Keep-Alive: timeout=15, max=100 Connection: Keep-Alive Content-Type: text/html; charset=euc-jp
IE 6.0 <---> Apache Web サーバ [HTTP/1.1・Apache で Keep-Alive を使用しない設定]
リクエストヘッダ
GET http://www.example.com/ HTTP/1.1 Accept: */* Accept-Language: ja Accept-Encoding: gzip, deflate User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 4.0) Host: www.example.com Connection: Keep-Alive
レスポンスヘッダ
HTTP/1.1 200 OK Date: Mon, 10 Mar 2003 07:40:13 GMT Server: Apache Last-Modified: Mon, 10 Mar 07:37:57 GMT ETag: "62eab-59-3e6c40d5" Accept-Ranges: bytes Content-Length: 89 Connection: Close Content-Type: text/html; charset=euc-jp
NN 7.1 <---> Apache Web サーバ [HTTP/1.1]
リクエストヘッダ
GET http://www.example.com/ HTTP/1.1 Host: www.example.com User-Agent: Mozilla/5.0 (Windows; U; WinNT4.0; ja-JP; rv:1.0.2) Gecho/20021120 Netscape/7.01 Accept: text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,video/x-mng,image/png, image/jpeg,image/gif;q=0.2,text/css,*/*;q=0.1 Accept-Language: ja Accept-Encoding: gzip, deflate, compress;1=0.9 Accept-Charset: Shift_JIS, utf-8;q=0.66 Keep-Alive: 300 Connection: Keep-Alive
レスポンスヘッダ
HTTP/1.1 200 OK Date: Mon, 10 Mar 2003 07:40:13 GMT Server: Apache Last-Modified: Mon, 10 Mar 07:37:57 GMT ETag: "62eab-59-3e6c40d5" Accept-Ranges: bytes Content-Length: 89 Keep-Alive: timeout=15, max=100 Connection: Keep-Alive Content-Type: text/html; charset=euc-jp
IE 6.0 <---> Squid Proxy サーバ [HTTP/1.1]
リクエストヘッダ
GET http://www.example.com/ HTTP/1.1 Accept: */* Accept-Language: ja Pragma: no-cache User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows 98) Host: www.example.com Proxy-Connection: Keep-Alive
レスポンスヘッダ
HTTP/1.1 200 OK Cache-Control: private Content-Type: text/html Server: GWS/2.0 Content-Length: 4131 X-Cache: MISS from proxy2.example.com Age: 0 X-Cache: MISS from proxy1.example.com Proxy-Connection: keep-alive