\u8f6c\u81ea\uff1ahttp:\/\/blog.csdn.net\/gueter\/archive\/2007\/03\/08\/1524447.aspx<\/p>\n
Author :Jeffrey<\/p>\n
\u5f15\u8a00<\/p>\n
HTTP\u662f\u4e00\u4e2a\u5c5e\u4e8e\u5e94\u7528\u5c42\u7684\u9762\u5411\u5bf9\u8c61\u7684\u534f\u8bae\uff0c\u7531\u4e8e\u5176\u7b80\u6377\u3001\u5feb\u901f\u7684\u65b9\u5f0f\uff0c\u9002\u7528\u4e8e\u5206\u5e03\u5f0f\u8d85\u5a92\u4f53\u4fe1\u606f\u7cfb\u7edf\u3002\u5b83\u4e8e1990\u5e74\u63d0\u51fa\uff0c\u7ecf\u8fc7\u51e0\u5e74\u7684\u4f7f\u7528\u4e0e\u53d1\u5c55\uff0c\u5f97\u5230\u4e0d\u65ad\u5730\u5b8c\u5584\u548c\u6269\u5c55\u3002\u76ee\u524d\u5728WWW\u4e2d\u4f7f\u7528\u7684\u662fHTTP\/1.0\u7684\u7b2c\u516d\u7248\uff0cHTTP\/1.1\u7684\u89c4\u8303\u5316\u5de5\u4f5c\u6b63\u5728\u8fdb\u884c\u4e4b\u4e2d\uff0c\u800c\u4e14HTTP-NG(Next Generation of HTTP)\u7684\u5efa\u8bae\u5df2\u7ecf\u63d0\u51fa\u3002
\nHTTP\u534f\u8bae\u7684\u4e3b\u8981\u7279\u70b9\u53ef\u6982\u62ec\u5982\u4e0b\uff1a
\n1.\u652f\u6301\u5ba2\u6237\/\u670d\u52a1\u5668\u6a21\u5f0f\u3002
\n2.\u7b80\u5355\u5feb\u901f\uff1a\u5ba2\u6237\u5411\u670d\u52a1\u5668\u8bf7\u6c42\u670d\u52a1\u65f6\uff0c\u53ea\u9700\u4f20\u9001\u8bf7\u6c42\u65b9\u6cd5\u548c\u8def\u5f84\u3002\u8bf7\u6c42\u65b9\u6cd5\u5e38\u7528\u7684\u6709GET\u3001HEAD\u3001POST\u3002\u6bcf\u79cd\u65b9\u6cd5\u89c4\u5b9a\u4e86\u5ba2\u6237\u4e0e\u670d\u52a1\u5668\u8054\u7cfb\u7684\u7c7b\u578b\u4e0d\u540c\u3002\u7531\u4e8eHTTP\u534f\u8bae\u7b80\u5355\uff0c\u4f7f\u5f97HTTP\u670d\u52a1\u5668\u7684\u7a0b\u5e8f\u89c4\u6a21\u5c0f\uff0c\u56e0\u800c\u901a\u4fe1\u901f\u5ea6\u5f88\u5feb\u3002
\n3.\u7075\u6d3b\uff1aHTTP\u5141\u8bb8\u4f20\u8f93\u4efb\u610f\u7c7b\u578b\u7684\u6570\u636e\u5bf9\u8c61\u3002\u6b63\u5728\u4f20\u8f93\u7684\u7c7b\u578b\u7531Content-Type\u52a0\u4ee5\u6807\u8bb0\u3002
\n4.\u65e0\u8fde\u63a5\uff1a\u65e0\u8fde\u63a5\u7684\u542b\u4e49\u662f\u9650\u5236\u6bcf\u6b21\u8fde\u63a5\u53ea\u5904\u7406\u4e00\u4e2a\u8bf7\u6c42\u3002\u670d\u52a1\u5668\u5904\u7406\u5b8c\u5ba2\u6237\u7684\u8bf7\u6c42\uff0c\u5e76\u6536\u5230\u5ba2\u6237\u7684\u5e94\u7b54\u540e\uff0c\u5373\u65ad\u5f00\u8fde\u63a5\u3002\u91c7\u7528\u8fd9\u79cd\u65b9\u5f0f\u53ef\u4ee5\u8282\u7701\u4f20\u8f93\u65f6\u95f4\u3002
\n5.\u65e0\u72b6\u6001\uff1aHTTP\u534f\u8bae\u662f\u65e0\u72b6\u6001\u534f\u8bae\u3002\u65e0\u72b6\u6001\u662f\u6307\u534f\u8bae\u5bf9\u4e8e\u4e8b\u52a1\u5904\u7406\u6ca1\u6709\u8bb0\u5fc6\u80fd\u529b\u3002\u7f3a\u5c11\u72b6\u6001\u610f\u5473\u7740\u5982\u679c\u540e\u7eed\u5904\u7406\u9700\u8981\u524d\u9762\u7684\u4fe1\u606f\uff0c\u5219\u5b83\u5fc5\u987b\u91cd\u4f20\uff0c\u8fd9\u6837\u53ef\u80fd\u5bfc\u81f4\u6bcf\u6b21\u8fde\u63a5\u4f20\u9001\u7684\u6570\u636e\u91cf\u589e\u5927\u3002\u53e6\u4e00\u65b9\u9762\uff0c\u5728\u670d\u52a1\u5668\u4e0d\u9700\u8981\u5148\u524d\u4fe1\u606f\u65f6\u5b83\u7684\u5e94\u7b54\u5c31\u8f83\u5feb\u3002<\/p>\n
\u4e00\u3001HTTP\u534f\u8bae\u8be6\u89e3\u4e4bURL\u7bc7<\/p>\n
http\uff08\u8d85\u6587\u672c\u4f20\u8f93\u534f\u8bae\uff09\u662f\u4e00\u4e2a\u57fa\u4e8e\u8bf7\u6c42\u4e0e\u54cd\u5e94\u6a21\u5f0f\u7684\u3001\u65e0\u72b6\u6001\u7684\u3001\u5e94\u7528\u5c42\u7684\u534f\u8bae\uff0c\u5e38\u57fa\u4e8eTCP\u7684\u8fde\u63a5\u65b9\u5f0f\uff0cHTTP1.1\u7248\u672c\u4e2d\u7ed9\u51fa\u4e00\u79cd\u6301\u7eed\u8fde\u63a5\u7684\u673a\u5236\uff0c\u7edd\u5927\u591a\u6570\u7684Web\u5f00\u53d1\uff0c\u90fd\u662f\u6784\u5efa\u5728HTTP\u534f\u8bae\u4e4b\u4e0a\u7684Web\u5e94\u7528\u3002<\/p>\n
HTTP URL (URL\u662f\u4e00\u79cd\u7279\u6b8a\u7c7b\u578b\u7684URI\uff0c\u5305\u542b\u4e86\u7528\u4e8e\u67e5\u627e\u67d0\u4e2a\u8d44\u6e90\u7684\u8db3\u591f\u7684\u4fe1\u606f)\u7684\u683c\u5f0f\u5982\u4e0b\uff1a
\nhttp:\/\/host[“:”port][abs_path]
\nhttp\u8868\u793a\u8981\u901a\u8fc7HTTP\u534f\u8bae\u6765\u5b9a\u4f4d\u7f51\u7edc\u8d44\u6e90\uff1bhost\u8868\u793a\u5408\u6cd5\u7684Internet\u4e3b\u673a\u57df\u540d\u6216\u8005IP\u5730\u5740\uff1bport\u6307\u5b9a\u4e00\u4e2a\u7aef\u53e3\u53f7\uff0c\u4e3a\u7a7a\u5219\u4f7f\u7528\u7f3a\u7701\u7aef\u53e380\uff1babs_path\u6307\u5b9a\u8bf7\u6c42\u8d44\u6e90\u7684URI\uff1b\u5982\u679cURL\u4e2d\u6ca1\u6709\u7ed9\u51faabs_path\uff0c\u90a3\u4e48\u5f53\u5b83\u4f5c\u4e3a\u8bf7\u6c42URI\u65f6\uff0c\u5fc5\u987b\u4ee5\u201c\/\u201d\u7684\u5f62\u5f0f\u7ed9\u51fa\uff0c\u901a\u5e38\u8fd9\u4e2a\u5de5\u4f5c\u6d4f\u89c8\u5668\u81ea\u52a8\u5e2e\u6211\u4eec\u5b8c\u6210\u3002
\neg:
\n1\u3001\u8f93\u5165\uff1awww.guet.edu.cn
\n\u6d4f\u89c8\u5668\u81ea\u52a8\u8f6c\u6362\u6210\uff1ahttp:\/\/www.guet.edu.cn\/
\n2\u3001http:192.168.0.116:8080\/index.jsp<\/p>\n
\u4e8c\u3001HTTP\u534f\u8bae\u8be6\u89e3\u4e4b\u8bf7\u6c42\u7bc7<\/p>\n
http\u8bf7\u6c42\u7531\u4e09\u90e8\u5206\u7ec4\u6210\uff0c\u5206\u522b\u662f\uff1a\u8bf7\u6c42\u884c\u3001\u6d88\u606f\u62a5\u5934\u3001\u8bf7\u6c42\u6b63\u6587<\/p>\n
1\u3001\u8bf7\u6c42\u884c\u4ee5\u4e00\u4e2a\u65b9\u6cd5\u7b26\u53f7\u5f00\u5934\uff0c\u4ee5\u7a7a\u683c\u5206\u5f00\uff0c\u540e\u9762\u8ddf\u7740\u8bf7\u6c42\u7684URI\u548c\u534f\u8bae\u7684\u7248\u672c\uff0c\u683c\u5f0f\u5982\u4e0b\uff1aMethod Request-URI HTTP-Version CRLF
\n\u5176\u4e2d Method\u8868\u793a\u8bf7\u6c42\u65b9\u6cd5\uff1bRequest-URI\u662f\u4e00\u4e2a\u7edf\u4e00\u8d44\u6e90\u6807\u8bc6\u7b26\uff1bHTTP-Version\u8868\u793a\u8bf7\u6c42\u7684HTTP\u534f\u8bae\u7248\u672c\uff1bCRLF\u8868\u793a\u56de\u8f66\u548c\u6362\u884c\uff08\u9664\u4e86\u4f5c\u4e3a\u7ed3\u5c3e\u7684CRLF\u5916\uff0c\u4e0d\u5141\u8bb8\u51fa\u73b0\u5355\u72ec\u7684CR\u6216LF\u5b57\u7b26\uff09\u3002<\/p>\n
\u8bf7\u6c42\u65b9\u6cd5\uff08\u6240\u6709\u65b9\u6cd5\u5168\u4e3a\u5927\u5199\uff09\u6709\u591a\u79cd\uff0c\u5404\u4e2a\u65b9\u6cd5\u7684\u89e3\u91ca\u5982\u4e0b\uff1a
\nGET \u8bf7\u6c42\u83b7\u53d6Request-URI\u6240\u6807\u8bc6\u7684\u8d44\u6e90
\nPOST \u5728Request-URI\u6240\u6807\u8bc6\u7684\u8d44\u6e90\u540e\u9644\u52a0\u65b0\u7684\u6570\u636e
\nHEAD \u8bf7\u6c42\u83b7\u53d6\u7531Request-URI\u6240\u6807\u8bc6\u7684\u8d44\u6e90\u7684\u54cd\u5e94\u6d88\u606f\u62a5\u5934
\nPUT \u8bf7\u6c42\u670d\u52a1\u5668\u5b58\u50a8\u4e00\u4e2a\u8d44\u6e90\uff0c\u5e76\u7528Request-URI\u4f5c\u4e3a\u5176\u6807\u8bc6
\nDELETE \u8bf7\u6c42\u670d\u52a1\u5668\u5220\u9664Request-URI\u6240\u6807\u8bc6\u7684\u8d44\u6e90
\nTRACE \u8bf7\u6c42\u670d\u52a1\u5668\u56de\u9001\u6536\u5230\u7684\u8bf7\u6c42\u4fe1\u606f\uff0c\u4e3b\u8981\u7528\u4e8e\u6d4b\u8bd5\u6216\u8bca\u65ad
\nCONNECT \u4fdd\u7559\u5c06\u6765\u4f7f\u7528
\nOPTIONS \u8bf7\u6c42\u67e5\u8be2\u670d\u52a1\u5668\u7684\u6027\u80fd\uff0c\u6216\u8005\u67e5\u8be2\u4e0e\u8d44\u6e90\u76f8\u5173\u7684\u9009\u9879\u548c\u9700\u6c42
\n\u5e94\u7528\u4e3e\u4f8b\uff1a
\nGET\u65b9\u6cd5\uff1a\u5728\u6d4f\u89c8\u5668\u7684\u5730\u5740\u680f\u4e2d\u8f93\u5165\u7f51\u5740\u7684\u65b9\u5f0f\u8bbf\u95ee\u7f51\u9875\u65f6\uff0c\u6d4f\u89c8\u5668\u91c7\u7528GET\u65b9\u6cd5\u5411\u670d\u52a1\u5668\u83b7\u53d6\u8d44\u6e90\uff0ceg:GET \/form.html HTTP\/1.1 (CRLF)<\/p>\n
POST\u65b9\u6cd5\u8981\u6c42\u88ab\u8bf7\u6c42\u670d\u52a1\u5668\u63a5\u53d7\u9644\u5728\u8bf7\u6c42\u540e\u9762\u7684\u6570\u636e\uff0c\u5e38\u7528\u4e8e\u63d0\u4ea4\u8868\u5355\u3002
\neg\uff1aPOST \/reg.jsp HTTP\/ (CRLF)
\nAccept:image\/gif,image\/x-xbit,… (CRLF)
\n…
\nHOST:www.guet.edu.cn (CRLF)
\nContent-Length:22 (CRLF)
\nConnection:Keep-Alive (CRLF)
\nCache-Control:no-cache (CRLF)
\n(CRLF) \/\/\u8be5CRLF\u8868\u793a\u6d88\u606f\u62a5\u5934\u5df2\u7ecf\u7ed3\u675f\uff0c\u5728\u6b64\u4e4b\u524d\u4e3a\u6d88\u606f\u62a5\u5934
\nuser=jeffrey&pwd=1234 \/\/\u6b64\u884c\u4ee5\u4e0b\u4e3a\u63d0\u4ea4\u7684\u6570\u636e<\/p>\n
HEAD\u65b9\u6cd5\u4e0eGET\u65b9\u6cd5\u51e0\u4e4e\u662f\u4e00\u6837\u7684\uff0c\u5bf9\u4e8eHEAD\u8bf7\u6c42\u7684\u56de\u5e94\u90e8\u5206\u6765\u8bf4\uff0c\u5b83\u7684HTTP\u5934\u90e8\u4e2d\u5305\u542b\u7684\u4fe1\u606f\u4e0e\u901a\u8fc7GET\u8bf7\u6c42\u6240\u5f97\u5230\u7684\u4fe1\u606f\u662f\u76f8\u540c\u7684\u3002\u5229\u7528\u8fd9\u4e2a\u65b9\u6cd5\uff0c\u4e0d\u5fc5\u4f20\u8f93\u6574\u4e2a\u8d44\u6e90\u5185\u5bb9\uff0c\u5c31\u53ef\u4ee5\u5f97\u5230Request-URI\u6240\u6807\u8bc6\u7684\u8d44\u6e90\u7684\u4fe1\u606f\u3002\u8be5\u65b9\u6cd5\u5e38\u7528\u4e8e\u6d4b\u8bd5\u8d85\u94fe\u63a5\u7684\u6709\u6548\u6027\uff0c\u662f\u5426\u53ef\u4ee5\u8bbf\u95ee\uff0c\u4ee5\u53ca\u6700\u8fd1\u662f\u5426\u66f4\u65b0\u3002
\n2\u3001\u8bf7\u6c42\u62a5\u5934\u540e\u8ff0
\n3\u3001\u8bf7\u6c42\u6b63\u6587(\u7565)<\/p>\n
\u4e09\u3001HTTP\u534f\u8bae\u8be6\u89e3\u4e4b\u54cd\u5e94\u7bc7<\/p>\n
\u5728\u63a5\u6536\u548c\u89e3\u91ca\u8bf7\u6c42\u6d88\u606f\u540e\uff0c\u670d\u52a1\u5668\u8fd4\u56de\u4e00\u4e2aHTTP\u54cd\u5e94\u6d88\u606f\u3002<\/p>\n
HTTP\u54cd\u5e94\u4e5f\u662f\u7531\u4e09\u4e2a\u90e8\u5206\u7ec4\u6210\uff0c\u5206\u522b\u662f\uff1a\u72b6\u6001\u884c\u3001\u6d88\u606f\u62a5\u5934\u3001\u54cd\u5e94\u6b63\u6587
\n1\u3001\u72b6\u6001\u884c\u683c\u5f0f\u5982\u4e0b\uff1a
\nHTTP-Version Status-Code Reason-Phrase CRLF
\n\u5176\u4e2d\uff0cHTTP-Version\u8868\u793a\u670d\u52a1\u5668HTTP\u534f\u8bae\u7684\u7248\u672c\uff1bStatus-Code\u8868\u793a\u670d\u52a1\u5668\u53d1\u56de\u7684\u54cd\u5e94\u72b6\u6001\u4ee3\u7801\uff1bReason-Phrase\u8868\u793a\u72b6\u6001\u4ee3\u7801\u7684\u6587\u672c\u63cf\u8ff0\u3002
\n\u72b6\u6001\u4ee3\u7801\u6709\u4e09\u4f4d\u6570\u5b57\u7ec4\u6210\uff0c\u7b2c\u4e00\u4e2a\u6570\u5b57\u5b9a\u4e49\u4e86\u54cd\u5e94\u7684\u7c7b\u522b\uff0c\u4e14\u6709\u4e94\u79cd\u53ef\u80fd\u53d6\u503c\uff1a
\n1xx\uff1a\u6307\u793a\u4fe1\u606f–\u8868\u793a\u8bf7\u6c42\u5df2\u63a5\u6536\uff0c\u7ee7\u7eed\u5904\u7406
\n2xx\uff1a\u6210\u529f–\u8868\u793a\u8bf7\u6c42\u5df2\u88ab\u6210\u529f\u63a5\u6536\u3001\u7406\u89e3\u3001\u63a5\u53d7
\n3xx\uff1a\u91cd\u5b9a\u5411–\u8981\u5b8c\u6210\u8bf7\u6c42\u5fc5\u987b\u8fdb\u884c\u66f4\u8fdb\u4e00\u6b65\u7684\u64cd\u4f5c
\n4xx\uff1a\u5ba2\u6237\u7aef\u9519\u8bef–\u8bf7\u6c42\u6709\u8bed\u6cd5\u9519\u8bef\u6216\u8bf7\u6c42\u65e0\u6cd5\u5b9e\u73b0
\n5xx\uff1a\u670d\u52a1\u5668\u7aef\u9519\u8bef–\u670d\u52a1\u5668\u672a\u80fd\u5b9e\u73b0\u5408\u6cd5\u7684\u8bf7\u6c42
\n\u5e38\u89c1\u72b6\u6001\u4ee3\u7801\u3001\u72b6\u6001\u63cf\u8ff0\u3001\u8bf4\u660e\uff1a
\n200 OK \/\/\u5ba2\u6237\u7aef\u8bf7\u6c42\u6210\u529f
\n400 Bad Request \/\/\u5ba2\u6237\u7aef\u8bf7\u6c42\u6709\u8bed\u6cd5\u9519\u8bef\uff0c\u4e0d\u80fd\u88ab\u670d\u52a1\u5668\u6240\u7406\u89e3
\n401 Unauthorized \/\/\u8bf7\u6c42\u672a\u7ecf\u6388\u6743\uff0c\u8fd9\u4e2a\u72b6\u6001\u4ee3\u7801\u5fc5\u987b\u548cWWW-Authenticate\u62a5\u5934\u57df\u4e00\u8d77\u4f7f\u7528
\n403 Forbidden \/\/\u670d\u52a1\u5668\u6536\u5230\u8bf7\u6c42\uff0c\u4f46\u662f\u62d2\u7edd\u63d0\u4f9b\u670d\u52a1
\n404 Not Found \/\/\u8bf7\u6c42\u8d44\u6e90\u4e0d\u5b58\u5728\uff0ceg\uff1a\u8f93\u5165\u4e86\u9519\u8bef\u7684URL
\n500 Internal Server Error \/\/\u670d\u52a1\u5668\u53d1\u751f\u4e0d\u53ef\u9884\u671f\u7684\u9519\u8bef
\n503 Server Unavailable \/\/\u670d\u52a1\u5668\u5f53\u524d\u4e0d\u80fd\u5904\u7406\u5ba2\u6237\u7aef\u7684\u8bf7\u6c42\uff0c\u4e00\u6bb5\u65f6\u95f4\u540e\u53ef\u80fd\u6062\u590d\u6b63\u5e38
\neg\uff1aHTTP\/1.1 200 OK \uff08CRLF\uff09<\/p>\n
2\u3001\u54cd\u5e94\u62a5\u5934\u540e\u8ff0<\/p>\n
3\u3001\u54cd\u5e94\u6b63\u6587\u5c31\u662f\u670d\u52a1\u5668\u8fd4\u56de\u7684\u8d44\u6e90\u7684\u5185\u5bb9<\/p>\n
\u56db\u3001HTTP\u534f\u8bae\u8be6\u89e3\u4e4b\u6d88\u606f\u62a5\u5934\u7bc7<\/p>\n
HTTP\u6d88\u606f\u7531\u5ba2\u6237\u7aef\u5230\u670d\u52a1\u5668\u7684\u8bf7\u6c42\u548c\u670d\u52a1\u5668\u5230\u5ba2\u6237\u7aef\u7684\u54cd\u5e94\u7ec4\u6210\u3002\u8bf7\u6c42\u6d88\u606f\u548c\u54cd\u5e94\u6d88\u606f\u90fd\u662f\u7531\u5f00\u59cb\u884c\uff08\u5bf9\u4e8e\u8bf7\u6c42\u6d88\u606f\uff0c\u5f00\u59cb\u884c\u5c31\u662f\u8bf7\u6c42\u884c\uff0c\u5bf9\u4e8e\u54cd\u5e94\u6d88\u606f\uff0c\u5f00\u59cb\u884c\u5c31\u662f\u72b6\u6001\u884c\uff09\uff0c\u6d88\u606f\u62a5\u5934\uff08\u53ef\u9009\uff09\uff0c\u7a7a\u884c\uff08\u53ea\u6709CRLF\u7684\u884c\uff09\uff0c\u6d88\u606f\u6b63\u6587\uff08\u53ef\u9009\uff09\u7ec4\u6210\u3002<\/p>\n
HTTP\u6d88\u606f\u62a5\u5934\u5305\u62ec\u666e\u901a\u62a5\u5934\u3001\u8bf7\u6c42\u62a5\u5934\u3001\u54cd\u5e94\u62a5\u5934\u3001\u5b9e\u4f53\u62a5\u5934\u3002
\n\u6bcf\u4e00\u4e2a\u62a5\u5934\u57df\u90fd\u662f\u7531\u540d\u5b57+\u201c\uff1a\u201d+\u7a7a\u683c+\u503c \u7ec4\u6210\uff0c\u6d88\u606f\u62a5\u5934\u57df\u7684\u540d\u5b57\u662f\u5927\u5c0f\u5199\u65e0\u5173\u7684\u3002<\/p>\n
1\u3001\u666e\u901a\u62a5\u5934
\n\u5728\u666e\u901a\u62a5\u5934\u4e2d\uff0c\u6709\u5c11\u6570\u62a5\u5934\u57df\u7528\u4e8e\u6240\u6709\u7684\u8bf7\u6c42\u548c\u54cd\u5e94\u6d88\u606f\uff0c\u4f46\u5e76\u4e0d\u7528\u4e8e\u88ab\u4f20\u8f93\u7684\u5b9e\u4f53\uff0c\u53ea\u7528\u4e8e\u4f20\u8f93\u7684\u6d88\u606f\u3002
\neg\uff1a
\nCache-Control \u7528\u4e8e\u6307\u5b9a\u7f13\u5b58\u6307\u4ee4\uff0c\u7f13\u5b58\u6307\u4ee4\u662f\u5355\u5411\u7684\uff08\u54cd\u5e94\u4e2d\u51fa\u73b0\u7684\u7f13\u5b58\u6307\u4ee4\u5728\u8bf7\u6c42\u4e2d\u672a\u5fc5\u4f1a\u51fa\u73b0\uff09\uff0c\u4e14\u662f\u72ec\u7acb\u7684\uff08\u4e00\u4e2a\u6d88\u606f\u7684\u7f13\u5b58\u6307\u4ee4\u4e0d\u4f1a\u5f71\u54cd\u53e6\u4e00\u4e2a\u6d88\u606f\u5904\u7406\u7684\u7f13\u5b58\u673a\u5236\uff09\uff0cHTTP1.0\u4f7f\u7528\u7684\u7c7b\u4f3c\u7684\u62a5\u5934\u57df\u4e3aPragma\u3002
\n\u8bf7\u6c42\u65f6\u7684\u7f13\u5b58\u6307\u4ee4\u5305\u62ec\uff1ano-cache\uff08\u7528\u4e8e\u6307\u793a\u8bf7\u6c42\u6216\u54cd\u5e94\u6d88\u606f\u4e0d\u80fd\u7f13\u5b58\uff09\u3001no-store\u3001max-age\u3001max-stale\u3001min-fresh\u3001only-if-cached;
\n\u54cd\u5e94\u65f6\u7684\u7f13\u5b58\u6307\u4ee4\u5305\u62ec\uff1apublic\u3001private\u3001no-cache\u3001no-store\u3001no-transform\u3001must-revalidate\u3001proxy-revalidate\u3001max-age\u3001s-maxage.
\neg\uff1a\u4e3a\u4e86\u6307\u793aIE\u6d4f\u89c8\u5668\uff08\u5ba2\u6237\u7aef\uff09\u4e0d\u8981\u7f13\u5b58\u9875\u9762\uff0c\u670d\u52a1\u5668\u7aef\u7684JSP\u7a0b\u5e8f\u53ef\u4ee5\u7f16\u5199\u5982\u4e0b\uff1aresponse.sehHeader(“Cache-Control”,”no-cache”);
\n\/\/response.setHeader(“Pragma”,”no-cache”);\u4f5c\u7528\u76f8\u5f53\u4e8e\u4e0a\u8ff0\u4ee3\u7801\uff0c\u901a\u5e38\u4e24\u8005\/\/\u5408\u7528
\n\u8fd9\u53e5\u4ee3\u7801\u5c06\u5728\u53d1\u9001\u7684\u54cd\u5e94\u6d88\u606f\u4e2d\u8bbe\u7f6e\u666e\u901a\u62a5\u5934\u57df\uff1aCache-Control:no-cache
\nDate\u666e\u901a\u62a5\u5934\u57df\u8868\u793a\u6d88\u606f\u4ea7\u751f\u7684\u65e5\u671f\u548c\u65f6\u95f4<\/p>\n
Connection\u666e\u901a\u62a5\u5934\u57df\u5141\u8bb8\u53d1\u9001\u6307\u5b9a\u8fde\u63a5\u7684\u9009\u9879\u3002\u4f8b\u5982\u6307\u5b9a\u8fde\u63a5\u662f\u8fde\u7eed\uff0c\u6216\u8005\u6307\u5b9a\u201cclose\u201d\u9009\u9879\uff0c\u901a\u77e5\u670d\u52a1\u5668\uff0c\u5728\u54cd\u5e94\u5b8c\u6210\u540e\uff0c\u5173\u95ed\u8fde\u63a5<\/p>\n
2\u3001\u8bf7\u6c42\u62a5\u5934
\n\u8bf7\u6c42\u62a5\u5934\u5141\u8bb8\u5ba2\u6237\u7aef\u5411\u670d\u52a1\u5668\u7aef\u4f20\u9012\u8bf7\u6c42\u7684\u9644\u52a0\u4fe1\u606f\u4ee5\u53ca\u5ba2\u6237\u7aef\u81ea\u8eab\u7684\u4fe1\u606f\u3002
\n\u5e38\u7528\u7684\u8bf7\u6c42\u62a5\u5934
\nAccept
\nAccept\u8bf7\u6c42\u62a5\u5934\u57df\u7528\u4e8e\u6307\u5b9a\u5ba2\u6237\u7aef\u63a5\u53d7\u54ea\u4e9b\u7c7b\u578b\u7684\u4fe1\u606f\u3002eg\uff1aAccept\uff1aimage\/gif\uff0c\u8868\u660e\u5ba2\u6237\u7aef\u5e0c\u671b\u63a5\u53d7GIF\u56fe\u8c61\u683c\u5f0f\u7684\u8d44\u6e90\uff1bAccept\uff1atext\/html\uff0c\u8868\u660e\u5ba2\u6237\u7aef\u5e0c\u671b\u63a5\u53d7html\u6587\u672c\u3002
\nAccept-Charset
\nAccept-Charset\u8bf7\u6c42\u62a5\u5934\u57df\u7528\u4e8e\u6307\u5b9a\u5ba2\u6237\u7aef\u63a5\u53d7\u7684\u5b57\u7b26\u96c6\u3002eg\uff1aAccept-Charset:iso-8859-1,gb2312.\u5982\u679c\u5728\u8bf7\u6c42\u6d88\u606f\u4e2d\u6ca1\u6709\u8bbe\u7f6e\u8fd9\u4e2a\u57df\uff0c\u7f3a\u7701\u662f\u4efb\u4f55\u5b57\u7b26\u96c6\u90fd\u53ef\u4ee5\u63a5\u53d7\u3002
\nAccept-Encoding
\nAccept-Encoding\u8bf7\u6c42\u62a5\u5934\u57df\u7c7b\u4f3c\u4e8eAccept\uff0c\u4f46\u662f\u5b83\u662f\u7528\u4e8e\u6307\u5b9a\u53ef\u63a5\u53d7\u7684\u5185\u5bb9\u7f16\u7801\u3002eg\uff1aAccept-Encoding:gzip.deflate.\u5982\u679c\u8bf7\u6c42\u6d88\u606f\u4e2d\u6ca1\u6709\u8bbe\u7f6e\u8fd9\u4e2a\u57df\u670d\u52a1\u5668\u5047\u5b9a\u5ba2\u6237\u7aef\u5bf9\u5404\u79cd\u5185\u5bb9\u7f16\u7801\u90fd\u53ef\u4ee5\u63a5\u53d7\u3002
\nAccept-Language
\nAccept-Language\u8bf7\u6c42\u62a5\u5934\u57df\u7c7b\u4f3c\u4e8eAccept\uff0c\u4f46\u662f\u5b83\u662f\u7528\u4e8e\u6307\u5b9a\u4e00\u79cd\u81ea\u7136\u8bed\u8a00\u3002eg\uff1aAccept-Language:zh-cn.\u5982\u679c\u8bf7\u6c42\u6d88\u606f\u4e2d\u6ca1\u6709\u8bbe\u7f6e\u8fd9\u4e2a\u62a5\u5934\u57df\uff0c\u670d\u52a1\u5668\u5047\u5b9a\u5ba2\u6237\u7aef\u5bf9\u5404\u79cd\u8bed\u8a00\u90fd\u53ef\u4ee5\u63a5\u53d7\u3002
\nAuthorization
\nAuthorization\u8bf7\u6c42\u62a5\u5934\u57df\u4e3b\u8981\u7528\u4e8e\u8bc1\u660e\u5ba2\u6237\u7aef\u6709\u6743\u67e5\u770b\u67d0\u4e2a\u8d44\u6e90\u3002\u5f53\u6d4f\u89c8\u5668\u8bbf\u95ee\u4e00\u4e2a\u9875\u9762\u65f6\uff0c\u5982\u679c\u6536\u5230\u670d\u52a1\u5668\u7684\u54cd\u5e94\u4ee3\u7801\u4e3a401\uff08\u672a\u6388\u6743\uff09\uff0c\u53ef\u4ee5\u53d1\u9001\u4e00\u4e2a\u5305\u542bAuthorization\u8bf7\u6c42\u62a5\u5934\u57df\u7684\u8bf7\u6c42\uff0c\u8981\u6c42\u670d\u52a1\u5668\u5bf9\u5176\u8fdb\u884c\u9a8c\u8bc1\u3002
\nHost\uff08\u53d1\u9001\u8bf7\u6c42\u65f6\uff0c\u8be5\u62a5\u5934\u57df\u662f\u5fc5\u9700\u7684\uff09
\nHost\u8bf7\u6c42\u62a5\u5934\u57df\u4e3b\u8981\u7528\u4e8e\u6307\u5b9a\u88ab\u8bf7\u6c42\u8d44\u6e90\u7684Internet\u4e3b\u673a\u548c\u7aef\u53e3\u53f7\uff0c\u5b83\u901a\u5e38\u4eceHTTP URL\u4e2d\u63d0\u53d6\u51fa\u6765\u7684\uff0ceg\uff1a
\n\u6211\u4eec\u5728\u6d4f\u89c8\u5668\u4e2d\u8f93\u5165\uff1ahttp:\/\/www.guet.edu.cn\/index.html
\n\u6d4f\u89c8\u5668\u53d1\u9001\u7684\u8bf7\u6c42\u6d88\u606f\u4e2d\uff0c\u5c31\u4f1a\u5305\u542bHost\u8bf7\u6c42\u62a5\u5934\u57df\uff0c\u5982\u4e0b\uff1a
\nHost\uff1awww.guet.edu.cn
\n\u6b64\u5904\u4f7f\u7528\u7f3a\u7701\u7aef\u53e3\u53f780\uff0c\u82e5\u6307\u5b9a\u4e86\u7aef\u53e3\u53f7\uff0c\u5219\u53d8\u6210\uff1aHost\uff1awww.guet.edu.cn:\u6307\u5b9a\u7aef\u53e3\u53f7
\nUser-Agent
\n\u6211\u4eec\u4e0a\u7f51\u767b\u9646\u8bba\u575b\u7684\u65f6\u5019\uff0c\u5f80\u5f80\u4f1a\u770b\u5230\u4e00\u4e9b\u6b22\u8fce\u4fe1\u606f\uff0c\u5176\u4e2d\u5217\u51fa\u4e86\u4f60\u7684\u64cd\u4f5c\u7cfb\u7edf\u7684\u540d\u79f0\u548c\u7248\u672c\uff0c\u4f60\u6240\u4f7f\u7528\u7684\u6d4f\u89c8\u5668\u7684\u540d\u79f0\u548c\u7248\u672c\uff0c\u8fd9\u5f80\u5f80\u8ba9\u5f88\u591a\u4eba\u611f\u5230\u5f88\u795e\u5947\uff0c\u5b9e\u9645\u4e0a\uff0c\u670d\u52a1\u5668\u5e94\u7528\u7a0b\u5e8f\u5c31\u662f\u4eceUser-Agent\u8fd9\u4e2a\u8bf7\u6c42\u62a5\u5934\u57df\u4e2d\u83b7\u53d6\u5230\u8fd9\u4e9b\u4fe1\u606f\u3002User-Agent\u8bf7\u6c42\u62a5\u5934\u57df\u5141\u8bb8\u5ba2\u6237\u7aef\u5c06\u5b83\u7684\u64cd\u4f5c\u7cfb\u7edf\u3001\u6d4f\u89c8\u5668\u548c\u5176\u5b83\u5c5e\u6027\u544a\u8bc9\u670d\u52a1\u5668\u3002\u4e0d\u8fc7\uff0c\u8fd9\u4e2a\u62a5\u5934\u57df\u4e0d\u662f\u5fc5\u9700\u7684\uff0c\u5982\u679c\u6211\u4eec\u81ea\u5df1\u7f16\u5199\u4e00\u4e2a\u6d4f\u89c8\u5668\uff0c\u4e0d\u4f7f\u7528User-Agent\u8bf7\u6c42\u62a5\u5934\u57df\uff0c\u90a3\u4e48\u670d\u52a1\u5668\u7aef\u5c31\u65e0\u6cd5\u5f97\u77e5\u6211\u4eec\u7684\u4fe1\u606f\u4e86\u3002
\n\u8bf7\u6c42\u62a5\u5934\u4e3e\u4f8b\uff1a
\nGET \/form.html HTTP\/1.1 (CRLF)
\nAccept:image\/gif,image\/x-xbitmap,image\/jpeg,application\/x-shockwave-flash,application\/vnd.ms-excel,application\/vnd.ms-powerpoint,application\/msword,*\/* (CRLF)
\nAccept-Language:zh-cn (CRLF)
\nAccept-Encoding:gzip,deflate (CRLF)
\nIf-Modified-Since:Wed,05 Jan 2007 11:21:25 GMT (CRLF)
\nIf-None-Match:W\/”80b1a4c018f3c41:8317″ (CRLF)
\nUser-Agent:Mozilla\/4.0(compatible;MSIE6.0;Windows NT 5.0) (CRLF)
\nHost:www.guet.edu.cn (CRLF)
\nConnection:Keep-Alive (CRLF)
\n(CRLF)<\/p>\n
3\u3001\u54cd\u5e94\u62a5\u5934
\n\u54cd\u5e94\u62a5\u5934\u5141\u8bb8\u670d\u52a1\u5668\u4f20\u9012\u4e0d\u80fd\u653e\u5728\u72b6\u6001\u884c\u4e2d\u7684\u9644\u52a0\u54cd\u5e94\u4fe1\u606f\uff0c\u4ee5\u53ca\u5173\u4e8e\u670d\u52a1\u5668\u7684\u4fe1\u606f\u548c\u5bf9Request-URI\u6240\u6807\u8bc6\u7684\u8d44\u6e90\u8fdb\u884c\u4e0b\u4e00\u6b65\u8bbf\u95ee\u7684\u4fe1\u606f\u3002
\n\u5e38\u7528\u7684\u54cd\u5e94\u62a5\u5934
\nLocation
\nLocation\u54cd\u5e94\u62a5\u5934\u57df\u7528\u4e8e\u91cd\u5b9a\u5411\u63a5\u53d7\u8005\u5230\u4e00\u4e2a\u65b0\u7684\u4f4d\u7f6e\u3002Location\u54cd\u5e94\u62a5\u5934\u57df\u5e38\u7528\u5728\u66f4\u6362\u57df\u540d\u7684\u65f6\u5019\u3002
\nServer
\nServer\u54cd\u5e94\u62a5\u5934\u57df\u5305\u542b\u4e86\u670d\u52a1\u5668\u7528\u6765\u5904\u7406\u8bf7\u6c42\u7684\u8f6f\u4ef6\u4fe1\u606f\u3002\u4e0eUser-Agent\u8bf7\u6c42\u62a5\u5934\u57df\u662f\u76f8\u5bf9\u5e94\u7684\u3002\u4e0b\u9762\u662f
\nServer\u54cd\u5e94\u62a5\u5934\u57df\u7684\u4e00\u4e2a\u4f8b\u5b50\uff1a
\nServer\uff1aApache-Coyote\/1.1
\nWWW-Authenticate
\nWWW-Authenticate\u54cd\u5e94\u62a5\u5934\u57df\u5fc5\u987b\u88ab\u5305\u542b\u5728401\uff08\u672a\u6388\u6743\u7684\uff09\u54cd\u5e94\u6d88\u606f\u4e2d\uff0c\u5ba2\u6237\u7aef\u6536\u5230401\u54cd\u5e94\u6d88\u606f\u65f6\u5019\uff0c\u5e76\u53d1\u9001Authorization\u62a5\u5934\u57df\u8bf7\u6c42\u670d\u52a1\u5668\u5bf9\u5176\u8fdb\u884c\u9a8c\u8bc1\u65f6\uff0c\u670d\u52a1\u7aef\u54cd\u5e94\u62a5\u5934\u5c31\u5305\u542b\u8be5\u62a5\u5934\u57df\u3002
\neg\uff1aWWW-Authenticate:Basic realm=”Basic Auth Test!” \/\/\u53ef\u4ee5\u770b\u51fa\u670d\u52a1\u5668\u5bf9\u8bf7\u6c42\u8d44\u6e90\u91c7\u7528\u7684\u662f\u57fa\u672c\u9a8c\u8bc1\u673a\u5236\u3002
\n4\u3001\u5b9e\u4f53\u62a5\u5934
\n\u8bf7\u6c42\u548c\u54cd\u5e94\u6d88\u606f\u90fd\u53ef\u4ee5\u4f20\u9001\u4e00\u4e2a\u5b9e\u4f53\u3002\u4e00\u4e2a\u5b9e\u4f53\u7531\u5b9e\u4f53\u62a5\u5934\u57df\u548c\u5b9e\u4f53\u6b63\u6587\u7ec4\u6210\uff0c\u4f46\u5e76\u4e0d\u662f\u8bf4\u5b9e\u4f53\u62a5\u5934\u57df\u548c\u5b9e\u4f53\u6b63\u6587\u8981\u5728\u4e00\u8d77\u53d1\u9001\uff0c\u53ef\u4ee5\u53ea\u53d1\u9001\u5b9e\u4f53\u62a5\u5934\u57df\u3002\u5b9e\u4f53\u62a5\u5934\u5b9a\u4e49\u4e86\u5173\u4e8e\u5b9e\u4f53\u6b63\u6587\uff08eg\uff1a\u6709\u65e0\u5b9e\u4f53\u6b63\u6587\uff09\u548c\u8bf7\u6c42\u6240\u6807\u8bc6\u7684\u8d44\u6e90\u7684\u5143\u4fe1\u606f\u3002
\n\u5e38\u7528\u7684\u5b9e\u4f53\u62a5\u5934
\nContent-Encoding
\nContent-Encoding\u5b9e\u4f53\u62a5\u5934\u57df\u88ab\u7528\u4f5c\u5a92\u4f53\u7c7b\u578b\u7684\u4fee\u9970\u7b26\uff0c\u5b83\u7684\u503c\u6307\u793a\u4e86\u5df2\u7ecf\u88ab\u5e94\u7528\u5230\u5b9e\u4f53\u6b63\u6587\u7684\u9644\u52a0\u5185\u5bb9\u7684\u7f16\u7801\uff0c\u56e0\u800c\u8981\u83b7\u5f97Content-Type\u62a5\u5934\u57df\u4e2d\u6240\u5f15\u7528\u7684\u5a92\u4f53\u7c7b\u578b\uff0c\u5fc5\u987b\u91c7\u7528\u76f8\u5e94\u7684\u89e3\u7801\u673a\u5236\u3002Content-Encoding\u8fd9\u6837\u7528\u4e8e\u8bb0\u5f55\u6587\u6863\u7684\u538b\u7f29\u65b9\u6cd5\uff0ceg\uff1aContent-Encoding\uff1agzip
\nContent-Language
\nContent-Language\u5b9e\u4f53\u62a5\u5934\u57df\u63cf\u8ff0\u4e86\u8d44\u6e90\u6240\u7528\u7684\u81ea\u7136\u8bed\u8a00\u3002\u6ca1\u6709\u8bbe\u7f6e\u8be5\u57df\u5219\u8ba4\u4e3a\u5b9e\u4f53\u5185\u5bb9\u5c06\u63d0\u4f9b\u7ed9\u6240\u6709\u7684\u8bed\u8a00\u9605\u8bfb
\n\u8005\u3002eg\uff1aContent-Language:da
\nContent-Length
\nContent-Length\u5b9e\u4f53\u62a5\u5934\u57df\u7528\u4e8e\u6307\u660e\u5b9e\u4f53\u6b63\u6587\u7684\u957f\u5ea6\uff0c\u4ee5\u5b57\u8282\u65b9\u5f0f\u5b58\u50a8\u7684\u5341\u8fdb\u5236\u6570\u5b57\u6765\u8868\u793a\u3002
\nContent-Type
\nContent-Type\u5b9e\u4f53\u62a5\u5934\u57df\u7528\u8bed\u6307\u660e\u53d1\u9001\u7ed9\u63a5\u6536\u8005\u7684\u5b9e\u4f53\u6b63\u6587\u7684\u5a92\u4f53\u7c7b\u578b\u3002eg\uff1a
\nContent-Type:text\/html;charset=ISO-8859-1
\nContent-Type:text\/html;charset=GB2312
\nLast-Modified
\nLast-Modified\u5b9e\u4f53\u62a5\u5934\u57df\u7528\u4e8e\u6307\u793a\u8d44\u6e90\u7684\u6700\u540e\u4fee\u6539\u65e5\u671f\u548c\u65f6\u95f4\u3002
\nExpires
\nExpires\u5b9e\u4f53\u62a5\u5934\u57df\u7ed9\u51fa\u54cd\u5e94\u8fc7\u671f\u7684\u65e5\u671f\u548c\u65f6\u95f4\u3002\u4e3a\u4e86\u8ba9\u4ee3\u7406\u670d\u52a1\u5668\u6216\u6d4f\u89c8\u5668\u5728\u4e00\u6bb5\u65f6\u95f4\u4ee5\u540e\u66f4\u65b0\u7f13\u5b58\u4e2d(\u518d\u6b21\u8bbf\u95ee\u66fe\u8bbf\u95ee\u8fc7\u7684\u9875\u9762\u65f6\uff0c\u76f4\u63a5\u4ece\u7f13\u5b58\u4e2d\u52a0\u8f7d\uff0c\u7f29\u77ed\u54cd\u5e94\u65f6\u95f4\u548c\u964d\u4f4e\u670d\u52a1\u5668\u8d1f\u8f7d)\u7684\u9875\u9762\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528Expires\u5b9e\u4f53\u62a5\u5934\u57df\u6307\u5b9a\u9875\u9762\u8fc7\u671f\u7684\u65f6\u95f4\u3002eg\uff1aExpires\uff1aThu\uff0c15 Sep 2006 16:23:12 GMT
\nHTTP1.1\u7684\u5ba2\u6237\u7aef\u548c\u7f13\u5b58\u5fc5\u987b\u5c06\u5176\u4ed6\u975e\u6cd5\u7684\u65e5\u671f\u683c\u5f0f\uff08\u5305\u62ec0\uff09\u770b\u4f5c\u5df2\u7ecf\u8fc7\u671f\u3002eg\uff1a\u4e3a\u4e86\u8ba9\u6d4f\u89c8\u5668\u4e0d\u8981\u7f13\u5b58\u9875\u9762\uff0c\u6211\u4eec\u4e5f\u53ef\u4ee5\u5229\u7528Expires\u5b9e\u4f53\u62a5\u5934\u57df\uff0c\u8bbe\u7f6e\u4e3a0\uff0cjsp\u4e2d\u7a0b\u5e8f\u5982\u4e0b\uff1aresponse.setDateHeader(“Expires”,”0″);<\/p>\n
\u4e94\u3001\u5229\u7528telnet\u89c2\u5bdfhttp\u534f\u8bae\u7684\u901a\u8baf\u8fc7\u7a0b<\/p>\n
\u5b9e\u9a8c\u76ee\u7684\u53ca\u539f\u7406\uff1a
\n\u5229\u7528MS\u7684telnet\u5de5\u5177\uff0c\u901a\u8fc7\u624b\u52a8\u8f93\u5165http\u8bf7\u6c42\u4fe1\u606f\u7684\u65b9\u5f0f\uff0c\u5411\u670d\u52a1\u5668\u53d1\u51fa\u8bf7\u6c42\uff0c\u670d\u52a1\u5668\u63a5\u6536\u3001\u89e3\u91ca\u548c\u63a5\u53d7\u8bf7\u6c42\u540e\uff0c\u4f1a\u8fd4\u56de\u4e00\u4e2a\u54cd\u5e94\uff0c\u8be5\u54cd\u5e94\u4f1a\u5728telnet\u7a97\u53e3\u4e0a\u663e\u793a\u51fa\u6765\uff0c\u4ece\u800c\u4ece\u611f\u6027\u4e0a\u52a0\u6df1\u5bf9http\u534f\u8bae\u7684\u901a\u8baf\u8fc7\u7a0b\u7684\u8ba4\u8bc6\u3002<\/p>\n
\u5b9e\u9a8c\u6b65\u9aa4\uff1a<\/p>\n
1\u3001\u6253\u5f00telnet
\n1.1 \u6253\u5f00telnet
\n\u8fd0\u884c–>cmd–>telnet<\/p>\n
1.2 \u6253\u5f00telnet\u56de\u663e\u529f\u80fd
\nset localecho<\/p>\n
2\u3001\u8fde\u63a5\u670d\u52a1\u5668\u5e76\u53d1\u9001\u8bf7\u6c42
\n2.1 open www.guet.edu.cn 80 \/\/\u6ce8\u610f\u7aef\u53e3\u53f7\u4e0d\u80fd\u7701\u7565<\/p>\n
HEAD \/index.asp HTTP\/1.0
\nHost:www.guet.edu.cn<\/p>\n
\/*\u6211\u4eec\u53ef\u4ee5\u53d8\u6362\u8bf7\u6c42\u65b9\u6cd5,\u8bf7\u6c42\u6842\u6797\u7535\u5b50\u4e3b\u9875\u5185\u5bb9,\u8f93\u5165\u6d88\u606f\u5982\u4e0b*\/
\nopen www.guet.edu.cn 80<\/p>\n
GET \/index.asp HTTP\/1.0 \/\/\u8bf7\u6c42\u8d44\u6e90\u7684\u5185\u5bb9
\nHost:www.guet.edu.cn<\/p>\n
2.2 open www.sina.com.cn 80 \/\/\u5728\u547d\u4ee4\u63d0\u793a\u7b26\u53f7\u4e0b\u76f4\u63a5\u8f93\u5165telnet www.sina.com.cn 80
\nHEAD \/index.asp HTTP\/1.0
\nHost:www.sina.com.cn<\/p>\n
3 \u5b9e\u9a8c\u7ed3\u679c\uff1a<\/p>\n
3.1 \u8bf7\u6c42\u4fe1\u606f2.1\u5f97\u5230\u7684\u54cd\u5e94\u662f:<\/p>\n
HTTP\/1.1 200 OK \/\/\u8bf7\u6c42\u6210\u529f
\nServer: Microsoft-IIS\/5.0 \/\/web\u670d\u52a1\u5668
\nDate: Thu,08 Mar 200707:17:51 GMT
\nConnection: Keep-Alive
\nContent-Length: 23330
\nContent-Type: text\/html
\nExpries: Thu,08 Mar 2007 07:16:51 GMT
\nSet-Cookie: ASPSESSIONIDQAQBQQQB=BEJCDGKADEDJKLKKAJEOIMMH; path=\/
\nCache-control: private<\/p>\n
\/\/\u8d44\u6e90\u5185\u5bb9\u7701\u7565<\/p>\n
3.2 \u8bf7\u6c42\u4fe1\u606f2.2\u5f97\u5230\u7684\u54cd\u5e94\u662f:<\/p>\n
HTTP\/1.0 404 Not Found \/\/\u8bf7\u6c42\u5931\u8d25
\nDate: Thu, 08 Mar 2007 07:50:50 GMT
\nServer: Apache\/2.0.54 <Unix>
\nLast-Modified: Thu, 30 Nov 2006 11:35:41 GMT
\nETag: “6277a-415-e7c76980”
\nAccept-Ranges: bytes
\nX-Powered-By: mod_xlayout_jh\/0.0.1vhs.markII.remix
\nVary: Accept-Encoding
\nContent-Type: text\/html
\nX-Cache: MISS from zjm152-78.sina.com.cn
\nVia: 1.0 zjm152-78.sina.com.cn:80<squid\/2.6.STABLES-20061207>
\nX-Cache: MISS from th-143.sina.com.cn
\nConnection: close
\n\u5931\u53bb\u4e86\u8ddf\u4e3b\u673a\u7684\u8fde\u63a5<\/p>\n
\u6309\u4efb\u610f\u952e\u7ee7\u7eed…<\/p>\n
4 .\u6ce8\u610f\u4e8b\u9879\uff1a1\u3001\u51fa\u73b0\u8f93\u5165\u9519\u8bef\uff0c\u5219\u8bf7\u6c42\u4e0d\u4f1a\u6210\u529f\u3002
\n2\u3001\u62a5\u5934\u57df\u4e0d\u5206\u5927\u5c0f\u5199\u3002
\n3\u3001\u66f4\u6df1\u4e00\u6b65\u4e86\u89e3HTTP\u534f\u8bae\uff0c\u53ef\u4ee5\u67e5\u770bRFC2616\uff0c\u5728http:\/\/www.letf.org\/rfc\u4e0a\u627e\u5230\u8be5\u6587\u4ef6\u3002
\n4\u3001\u5f00\u53d1\u540e\u53f0\u7a0b\u5e8f\u5fc5\u987b\u638c\u63e1http\u534f\u8bae<\/p>\n
\u516d\u3001HTTP\u534f\u8bae\u76f8\u5173\u6280\u672f\u8865\u5145<\/p>\n
1\u3001\u57fa\u7840\uff1a
\n\u9ad8\u5c42\u534f\u8bae\u6709\uff1a\u6587\u4ef6\u4f20\u8f93\u534f\u8baeFTP\u3001\u7535\u5b50\u90ae\u4ef6\u4f20\u8f93\u534f\u8baeSMTP\u3001\u57df\u540d\u7cfb\u7edf\u670d\u52a1DNS\u3001\u7f51\u7edc\u65b0\u95fb\u4f20\u8f93\u534f\u8baeNNTP\u548cHTTP\u534f\u8bae\u7b49
\n\u4e2d\u4ecb\u7531\u4e09\u79cd\uff1a\u4ee3\u7406(Proxy)\u3001\u7f51\u5173(Gateway)\u548c\u901a\u9053(Tunnel)\uff0c\u4e00\u4e2a\u4ee3\u7406\u6839\u636eURI\u7684\u7edd\u5bf9\u683c\u5f0f\u6765\u63a5\u53d7\u8bf7\u6c42\uff0c\u91cd\u5199\u5168\u90e8\u6216\u90e8\u5206\u6d88\u606f\uff0c\u901a\u8fc7 URI\u7684\u6807\u8bc6\u628a\u5df2\u683c\u5f0f\u5316\u8fc7\u7684\u8bf7\u6c42\u53d1\u9001\u5230\u670d\u52a1\u5668\u3002\u7f51\u5173\u662f\u4e00\u4e2a\u63a5\u6536\u4ee3\u7406\uff0c\u4f5c\u4e3a\u4e00\u4e9b\u5176\u5b83\u670d\u52a1\u5668\u7684\u4e0a\u5c42\uff0c\u5e76\u4e14\u5982\u679c\u5fc5\u987b\u7684\u8bdd\uff0c\u53ef\u4ee5\u628a\u8bf7\u6c42\u7ffb\u8bd1\u7ed9\u4e0b\u5c42\u7684\u670d\u52a1\u5668\u534f\u8bae\u3002\u4e00 \u4e2a\u901a\u9053\u4f5c\u4e3a\u4e0d\u6539\u53d8\u6d88\u606f\u7684\u4e24\u4e2a\u8fde\u63a5\u4e4b\u95f4\u7684\u4e2d\u7ee7\u70b9\u3002\u5f53\u901a\u8baf\u9700\u8981\u901a\u8fc7\u4e00\u4e2a\u4e2d\u4ecb(\u4f8b\u5982\uff1a\u9632\u706b\u5899\u7b49)\u6216\u8005\u662f\u4e2d\u4ecb\u4e0d\u80fd\u8bc6\u522b\u6d88\u606f\u7684\u5185\u5bb9\u65f6\uff0c\u901a\u9053\u7ecf\u5e38\u88ab\u4f7f\u7528\u3002
\n\u4ee3\u7406(Proxy)\uff1a\u4e00\u4e2a\u4e2d\u95f4\u7a0b\u5e8f\uff0c\u5b83\u53ef\u4ee5\u5145\u5f53\u4e00\u4e2a\u670d\u52a1\u5668\uff0c\u4e5f\u53ef\u4ee5\u5145\u5f53\u4e00\u4e2a\u5ba2\u6237\u673a\uff0c\u4e3a\u5176\u5b83\u5ba2\u6237\u673a\u5efa\u7acb\u8bf7\u6c42\u3002\u8bf7\u6c42\u662f\u901a\u8fc7\u53ef\u80fd\u7684\u7ffb\u8bd1\u5728\u5185\u90e8\u6216\u7ecf\u8fc7\u4f20\u9012\u5230\u5176\u5b83\u7684 \u670d\u52a1\u5668\u4e2d\u3002\u4e00\u4e2a\u4ee3\u7406\u5728\u53d1\u9001\u8bf7\u6c42\u4fe1\u606f\u4e4b\u524d\uff0c\u5fc5\u987b\u89e3\u91ca\u5e76\u4e14\u5982\u679c\u53ef\u80fd\u91cd\u5199\u5b83\u3002\u4ee3\u7406\u7ecf\u5e38\u4f5c\u4e3a\u901a\u8fc7\u9632\u706b\u5899\u7684\u5ba2\u6237\u673a\u7aef\u7684\u95e8\u6237\uff0c\u4ee3\u7406\u8fd8\u53ef\u4ee5\u4f5c\u4e3a\u4e00\u4e2a\u5e2e\u52a9\u5e94\u7528\u6765\u901a\u8fc7\u534f\u8bae\u5904 \u7406\u6ca1\u6709\u88ab\u7528\u6237\u4ee3\u7406\u5b8c\u6210\u7684\u8bf7\u6c42\u3002
\n\u7f51\u5173(Gateway)\uff1a\u4e00\u4e2a\u4f5c\u4e3a\u5176\u5b83\u670d\u52a1\u5668\u4e2d\u95f4\u5a92\u4ecb\u7684\u670d\u52a1\u5668\u3002\u4e0e\u4ee3\u7406\u4e0d\u540c\u7684\u662f\uff0c\u7f51\u5173\u63a5\u53d7\u8bf7\u6c42\u5c31\u597d\u8c61\u5bf9\u88ab\u8bf7\u6c42\u7684\u8d44\u6e90\u6765\u8bf4\u5b83\u5c31\u662f\u6e90\u670d\u52a1\u5668\uff1b\u53d1\u51fa\u8bf7\u6c42\u7684\u5ba2\u6237\u673a\u5e76\u6ca1\u6709\u610f\u8bc6\u5230\u5b83\u5728\u540c\u7f51\u5173\u6253\u4ea4\u9053\u3002
\n\u7f51\u5173\u7ecf\u5e38\u4f5c\u4e3a\u901a\u8fc7\u9632\u706b\u5899\u7684\u670d\u52a1\u5668\u7aef\u7684\u95e8\u6237\uff0c\u7f51\u5173\u8fd8\u53ef\u4ee5\u4f5c\u4e3a\u4e00\u4e2a\u534f\u8bae\u7ffb\u8bd1\u5668\u4ee5\u4fbf\u5b58\u53d6\u90a3\u4e9b\u5b58\u50a8\u5728\u975eHTTP\u7cfb\u7edf\u4e2d\u7684\u8d44\u6e90\u3002
\n\u901a\u9053(Tunnel)\uff1a\u662f\u4f5c\u4e3a\u4e24\u4e2a\u8fde\u63a5\u4e2d\u7ee7\u7684\u4e2d\u4ecb\u7a0b\u5e8f\u3002\u4e00\u65e6\u6fc0\u6d3b\uff0c\u901a\u9053\u4fbf\u88ab\u8ba4\u4e3a\u4e0d\u5c5e\u4e8eHTTP\u901a\u8baf\uff0c\u5c3d\u7ba1\u901a\u9053\u53ef\u80fd\u662f\u88ab\u4e00\u4e2aHTTP\u8bf7\u6c42\u521d\u59cb\u5316\u7684\u3002\u5f53\u88ab\u4e2d\u7ee7 \u7684\u8fde\u63a5\u4e24\u7aef\u5173\u95ed\u65f6\uff0c\u901a\u9053\u4fbf\u6d88\u5931\u3002\u5f53\u4e00\u4e2a\u95e8\u6237(Portal)\u5fc5\u987b\u5b58\u5728\u6216\u4e2d\u4ecb(Intermediary)\u4e0d\u80fd\u89e3\u91ca\u4e2d\u7ee7\u7684\u901a\u8baf\u65f6\u901a\u9053\u88ab\u7ecf\u5e38\u4f7f\u7528\u3002<\/p>\n
2\u3001\u534f\u8bae\u5206\u6790\u7684\u4f18\u52bf\u2014HTTP\u5206\u6790\u5668\u68c0\u6d4b\u7f51\u7edc\u653b\u51fb
\n\u4ee5\u6a21\u5757\u5316\u7684\u65b9\u5f0f\u5bf9\u9ad8\u5c42\u534f\u8bae\u8fdb\u884c\u5206\u6790\u5904\u7406\uff0c\u5c06\u662f\u672a\u6765\u5165\u4fb5\u68c0\u6d4b\u7684\u65b9\u5411\u3002
\nHTTP\u53ca\u5176\u4ee3\u7406\u7684\u5e38\u7528\u7aef\u53e380\u30013128\u548c8080\u5728network\u90e8\u5206\u7528port\u6807\u7b7e\u8fdb\u884c\u4e86\u89c4\u5b9a<\/p>\n
3\u3001HTTP\u534f\u8baeContent Lenth\u9650\u5236\u6f0f\u6d1e\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\u653b\u51fb
\n\u4f7f\u7528POST\u65b9\u6cd5\u65f6\uff0c\u53ef\u4ee5\u8bbe\u7f6eContentLenth\u6765\u5b9a\u4e49\u9700\u8981\u4f20\u9001\u7684\u6570\u636e\u957f\u5ea6\uff0c\u4f8b\u5982ContentLenth:999999999\uff0c\u5728\u4f20\u9001\u5b8c\u6210\u524d\uff0c\u5185 \u5b58\u4e0d\u4f1a\u91ca\u653e\uff0c\u653b\u51fb\u8005\u53ef\u4ee5\u5229\u7528\u8fd9\u4e2a\u7f3a\u9677\uff0c\u8fde\u7eed\u5411WEB\u670d\u52a1\u5668\u53d1\u9001\u5783\u573e\u6570\u636e\u76f4\u81f3WEB\u670d\u52a1\u5668\u5185\u5b58\u8017\u5c3d\u3002\u8fd9\u79cd\u653b\u51fb\u65b9\u6cd5\u57fa\u672c\u4e0d\u4f1a\u7559\u4e0b\u75d5\u8ff9\u3002
\nhttp:\/\/www.cnpaf.net\/Class\/HTTP\/0532918532667330.html<\/p>\n
4\u3001\u5229\u7528HTTP\u534f\u8bae\u7684\u7279\u6027\u8fdb\u884c\u62d2\u7edd\u670d\u52a1\u653b\u51fb\u7684\u4e00\u4e9b\u6784\u601d
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