{"id":246,"date":"2017-07-19T22:55:45","date_gmt":"2017-07-19T14:55:45","guid":{"rendered":"http:\/\/zkeeer.space\/?p=246"},"modified":"2017-07-20T00:45:49","modified_gmt":"2017-07-19T16:45:49","slug":"%e3%80%90%e7%bf%bb%e8%af%91%e3%80%91%e4%b8%80%e6%ad%a5%e6%ad%a5%e5%bc%80%e5%8f%91%e6%89%93%e9%80%a0%e4%b8%80%e4%b8%aaweb%e6%9c%8d%e5%8a%a1%e5%99%a8-part-3","status":"publish","type":"post","link":"http:\/\/zkeeer.space\/?p=246","title":{"rendered":"\u3010\u7ffb\u8bd1\u3011\u4e00\u6b65\u6b65\u5f00\u53d1\u6253\u9020\u4e00\u4e2aWeb\u670d\u52a1\u5668.Part 3."},"content":{"rendered":"

\u539f\u6587\u94fe\u63a5\uff1aLet\u2019s Build A Web Server. Part 3.<\/i><\/a>
\n\u8bd1\u6587\u94fe\u63a5\uff1a\u3010\u7ffb\u8bd1\u3011\u4e00\u6b65\u6b65\u5f00\u53d1\u6253\u9020\u4e00\u4e2aWeb\u670d\u52a1\u5668.Part 3.<\/i><\/a>
\n\u672c\u6587\u4ee3\u7801\u57fa\u4e8epython2.x<\/p>\n

\u53d1\u73b0\u9519\u8bef\u8bf7\u5728\u8bc4\u8bba\u533a\u6307\u51fa\uff0c\u591a\u8c22<\/p>\n

\u672c\u7cfb\u5217\u5176\u4ed6\u6587\u7ae0\uff1a
\n\u3010\u7ffb\u8bd1\u3011\u4e00\u6b65\u6b65\u5f00\u53d1\u4e00\u4e2aWeb\u670d\u52a1\u5668.Part 1.<\/i><\/a>
\n\u3010\u7ffb\u8bd1\u3011\u4e00\u6b65\u6b65\u5f00\u53d1\u4e00\u4e2aWeb\u670d\u52a1\u5668.Part 2.<\/i><\/a>
\n\u3010\u7ffb\u8bd1\u3011\u4e00\u6b65\u6b65\u5f00\u53d1\u4e00\u4e2aWeb\u670d\u52a1\u5668.Part 3.<\/i><\/a><\/p><\/blockquote>\n

<\/div>\n

\u6211\u4eec\u8981\u8fdb\u884c\u53d1\u660e\u65f6\uff0c\u6211\u4eec\u5b66\u7684\u4e1c\u897f\u6700\u591a \u2014\u2014 \u76ae\u4e9a\u6770<\/p><\/blockquote>\n

\u5728Part2<\/a>\u4e2d\uff0c\u4f60\u5df2\u7ecf\u521b\u9020\u4e86\u4e00\u4e2a\u80fd\u5904\u7406\u57fa\u672cHTTP GET\u65b9\u6cd5\u8bf7\u6c42\u7684WSGI\u670d\u52a1\u5668\u3002\u6211\u8fd8\u7559\u4e86\u4e2a\u8bfe\u540e\u4f5c\u4e1a\uff0c\u201c\u600e\u6837\u4fdd\u8bc1\u4f60\u7684\u670d\u52a1\u5668\u80fd\u5728\u540c\u4e00\u65f6\u95f4\u5904\u7406\u591a\u4e2a\u8bf7\u6c42\uff1f\u201d\u6211\u4eec\u5c06\u5728\u672c\u7ae0\u4e2d\u627e\u5bfb\u7b54\u6848\u3002\u8ba9\u6211\u4eec\u7b56\u9a6c\u626c\u97ad\uff0c\u5373\u523b\u542f\u7a0b\u3002\u51c6\u5907\u597d\u4f60\u7684linux\u3001Mac OS X\uff08\u6216\u8005\u522b\u7684\u4ec0\u4e48*nix\u64cd\u4f5c\u7cfb\u7edf\uff09\u3001Python\u3002\u672c\u6587\u4e2d\u6240\u6709\u4ee3\u7801\u90fd\u53ef\u4ee5\u4eceGithub<\/a>\u4e0a\u4e0b\u8f7d\u3002<\/p>\n

\u9996\u5148\uff0c\u6211\u4eec\u56de\u5fc6\u4e00\u4e0b\uff0c\u4e00\u4e2a\u57fa\u672c\u7684Web\u670d\u52a1\u5668\u5e94\u8be5\u6709\u4ec0\u4e48\uff1f\u4e3a\u4e86\u5904\u7406\u5ba2\u6237\u7aef\u8bf7\u6c42\uff0c\u670d\u52a1\u5668\u5e94\u8be5\u505a\u4ec0\u4e48\uff1f\u5728\u6587\u7ae0Part1<\/a>\u548cPart2<\/a>\u4e2d\u5199\u7684\u90a3\u4e2a\u670d\u52a1\u5668\u662f\u4e00\u4e2a\u8fed\u4ee3\u670d\u52a1\u5668\uff0c\u4e00\u6b21\u53ea\u80fd\u5904\u7406\u4e00\u4e2a\u5ba2\u6237\u7aef\u7684\u8bf7\u6c42\u3002\u8fd9\u65f6\u5019\u6709\u4e9b\u5ba2\u6237\u7aef\u5c31\u4e0d\u4e50\u610f\u4e86\uff0c\u56e0\u4e3a\u4ed6\u4eec\u8981\u6392\u961f\uff0c\u6216\u8bb8\u662f\u5f88\u957f\u5f88\u957f\u7684\u961f\u3002<\/p>\n

\"\"<\/p>\n

\u8fd9\u91cc\u662f\u8fed\u4ee3\u670d\u52a1\u5668\u7684\u4ee3\u7801 webserver3a.py<\/a>:<\/p>\n

#####################################################################<\/span>\r\n# Iterative server - webserver3a.py                                 #<\/span>\r\n#                                                                   #<\/span>\r\n# Tested with Python 2.7.9 & Python 3.4 on Ubuntu 14.04 & Mac OS X  #<\/span>\r\n#####################################################################<\/span>\r\nimport<\/span> socket<\/span>\r\n\r\nSERVER_ADDRESS<\/span> =<\/span> (<\/span>HOST<\/span>,<\/span> PORT<\/span>)<\/span> =<\/span> ''<\/span>,<\/span> 8888<\/span>\r\nREQUEST_QUEUE_SIZE<\/span> =<\/span> 5<\/span>\r\n\r\n\r\ndef<\/span> handle_request<\/span>(<\/span>client_connection<\/span>):<\/span>\r\n    request<\/span> =<\/span> client_connection<\/span>.<\/span>recv<\/span>(<\/span>1024<\/span>)<\/span>\r\n    print<\/span>(<\/span>request<\/span>.<\/span>decode<\/span>())<\/span>\r\n    http_response<\/span> =<\/span> b<\/span>\"\"\"<\/span>\\<\/span>\r\nHTTP\/1.1 200 OK<\/span>\r\n\r\nHello, World!<\/span>\r\n\"\"\"<\/span>\r\n    client_connection<\/span>.<\/span>sendall<\/span>(<\/span>http_response<\/span>)<\/span>\r\n\r\n\r\ndef<\/span> serve_forever<\/span>():<\/span>\r\n    listen_socket<\/span> =<\/span> socket<\/span>.<\/span>socket<\/span>(<\/span>socket<\/span>.<\/span>AF_INET<\/span>,<\/span> socket<\/span>.<\/span>SOCK_STREAM<\/span>)<\/span>\r\n    listen_socket<\/span>.<\/span>setsockopt<\/span>(<\/span>socket<\/span>.<\/span>SOL_SOCKET<\/span>,<\/span> socket<\/span>.<\/span>SO_REUSEADDR<\/span>,<\/span> 1<\/span>)<\/span>\r\n    listen_socket<\/span>.<\/span>bind<\/span>(<\/span>SERVER_ADDRESS<\/span>)<\/span>\r\n    listen_socket<\/span>.<\/span>listen<\/span>(<\/span>REQUEST_QUEUE_SIZE<\/span>)<\/span>\r\n    print<\/span>(<\/span>'Serving HTTP on port {port} ...'<\/span>.<\/span>format<\/span>(<\/span>port<\/span>=<\/span>PORT<\/span>))<\/span>\r\n\r\n    while<\/span> True<\/span>:<\/span>\r\n        client_connection<\/span>,<\/span> client_address<\/span> =<\/span> listen_socket<\/span>.<\/span>accept<\/span>()<\/span>\r\n        handle_request<\/span>(<\/span>client_connection<\/span>)<\/span>\r\n        client_connection<\/span>.<\/span>close<\/span>()<\/span>\r\n\r\nif<\/span> __name__<\/span> ==<\/span> '__main__'<\/span>:<\/span>\r\n    serve_forever<\/span>()<\/span><\/pre>\n
\u4e3a\u4e86\u89c2\u5bdf\u670d\u52a1\u5668\u662f\u600e\u6837\u4e00\u6b21\u53ea\u5904\u7406\u4e00\u4e2a\u5ba2\u6237\u7aef\u7684\uff0c\u6211\u4fee\u6539\u4e86\u670d\u52a1\u5668\u7684\u4e00\u70b9\u513f\u4ee3\u7801\uff0c\u5e76\u5728\u53d1\u9001\u7ed9\u5ba2\u6237\u7aef\u54cd\u5e94\u4e4b\u540e\u52a0\u4e8660s\u7684\u5ef6\u65f6\u3002\u53ea\u662f\u4fee\u6539\u4e86\u4e00\u884c\uff0c\u8ba9\u670d\u52a1\u5668\u5148\u7761\u4f1a\u513f\u3002<\/p>\n
\"\"<\/p>\n
\u4e0b\u9762\u662f\u90a3\u4e2a\u7761\u61d2\u89c9\u7684\u670d\u52a1\u5668webserver3b.py<\/a><\/p>\n
#########################################################################<\/span>\r\n# Iterative server - webserver3b.py                                     #<\/span>\r\n#                                                                       #<\/span>\r\n# Tested with Python 2.7.9 & Python 3.4 on Ubuntu 14.04 & Mac OS X      #<\/span>\r\n#                                                                       #<\/span>\r\n# - Server sleeps for 60 seconds after sending a response to a client   #<\/span>\r\n#########################################################################<\/span>\r\nimport<\/span> socket<\/span>\r\nimport<\/span> time<\/span>\r\n\r\nSERVER_ADDRESS<\/span> =<\/span> (<\/span>HOST<\/span>,<\/span> PORT<\/span>)<\/span> =<\/span> ''<\/span>,<\/span> 8888<\/span>\r\nREQUEST_QUEUE_SIZE<\/span> =<\/span> 5<\/span>\r\n\r\n\r\ndef<\/span> handle_request<\/span>(<\/span>client_connection<\/span>):<\/span>\r\n    request<\/span> =<\/span> client_connection<\/span>.<\/span>recv<\/span>(<\/span>1024<\/span>)<\/span>\r\n    print<\/span>(<\/span>request<\/span>.<\/span>decode<\/span>())<\/span>\r\n    http_response<\/span> =<\/span> b<\/span>\"\"\"<\/span>\\<\/span>\r\nHTTP\/1.1 200 OK<\/span>\r\n\r\nHello, World!<\/span>\r\n\"\"\"<\/span>\r\n    client_connection<\/span>.<\/span>sendall<\/span>(<\/span>http_response<\/span>)<\/span>\r\n    time<\/span>.<\/span>sleep<\/span>(<\/span>60<\/span>)<\/span>  # sleep and block the process for 60 seconds<\/span>\r\n\r\n\r\ndef<\/span> serve_forever<\/span>():<\/span>\r\n    listen_socket<\/span> =<\/span> socket<\/span>.<\/span>socket<\/span>(<\/span>socket<\/span>.<\/span>AF_INET<\/span>,<\/span> socket<\/span>.<\/span>SOCK_STREAM<\/span>)<\/span>\r\n    listen_socket<\/span>.<\/span>setsockopt<\/span>(<\/span>socket<\/span>.<\/span>SOL_SOCKET<\/span>,<\/span> socket<\/span>.<\/span>SO_REUSEADDR<\/span>,<\/span> 1<\/span>)<\/span>\r\n    listen_socket<\/span>.<\/span>bind<\/span>(<\/span>SERVER_ADDRESS<\/span>)<\/span>\r\n    listen_socket<\/span>.<\/span>listen<\/span>(<\/span>REQUEST_QUEUE_SIZE<\/span>)<\/span>\r\n    print<\/span>(<\/span>'Serving HTTP on port {port} ...'<\/span>.<\/span>format<\/span>(<\/span>port<\/span>=<\/span>PORT<\/span>))<\/span>\r\n\r\n    while<\/span> True<\/span>:<\/span>\r\n        client_connection<\/span>,<\/span> client_address<\/span> =<\/span> listen_socket<\/span>.<\/span>accept<\/span>()<\/span>\r\n        handle_request<\/span>(<\/span>client_connection<\/span>)<\/span>\r\n        client_connection<\/span>.<\/span>close<\/span>()<\/span>\r\n\r\nif<\/span> __name__<\/span> ==<\/span> '__main__'<\/span>:<\/span>\r\n    serve_forever<\/span>()<\/span><\/pre>\n
\u542f\u52a8\u670d\u52a1\u5668\u7684\u547d\u4ee4\uff1a<\/p>\n
\n
$ python webserver3b.py\r\n<\/pre>\n<\/div>\n
\u73b0\u5728\u6253\u5f00\u4e00\u4e2a\u65b0\u7684\u7ec8\u7aef\uff0c\u4f7f\u7528curl\u547d\u4ee4\u3002\u4f60\u5e94\u8be5\u76f4\u63a5\u80fd\u770b\u5230\u201cHello World\uff01\u201d\u8f93\u51fa\u51fa\u6765\u3002<\/p>\n
\n
$ curl http:\/\/localhost:8888\/hello\r\nHello, World!\r\n<\/pre>\n<\/div>\n
\u5982\u679c\u6ca1\u6709\u5ef6\u65f6\uff0c\u6253\u5f00\u7b2c\u4e8c\u4e2a\u7ec8\u7aef\uff0c\u6267\u884c\u540c\u6837\u7684curl\u547d\u4ee4\uff1a<\/p>\n
\n
$ curl http:\/\/localhost:8888\/hello\r\n<\/pre>\n<\/div>\n
\u5982\u679c\u4f60\u5df2\u7ecf\u8bbe\u7f6e\u4e8660S\u5ef6\u65f6\uff0c\u7b2c\u4e8c\u4e2acurl\u5e94\u8be5\u4e0d\u4f1a\u7acb\u523b\u4ea7\u751f\u4efb\u4f55\u8f93\u51fa\uff0c\u53ea\u662f\u5728\u8fd9\u513f\u7b49\u7740\u3002\u670d\u52a1\u5668\u4e5f\u4e0d\u4f1a\u6253\u5370\u4e00\u4e2a\u65b0\u7684\u8bf7\u6c42\u4e3b\u4f53\u3002\u4e0b\u56fe\u662f\u5728\u6211Mac\u4e0a\u8dd1\u7684\u7ed3\u679c\u3002\uff08\u53f3\u4e0b\u89d2\u662f\u7b2c\u4e8c\u4e2a\u7ec8\u7aef\u7a97\u53e3\uff0c\u7b49\u7740\u670d\u52a1\u5668\u7684\u8fde\u63a5\u548c\u63a5\u6536\u8bf7\u6c42\uff09<\/p>\n
\"\"<\/p>\n
\u7b49\u5230\u8d85\u8fc760S\u540e\uff0c\u4f60\u5e94\u8be5\u80fd\u770b\u5230\u7b2c\u4e00\u4e2a\u7b2c\u4e00\u4e2a\u7ec8\u7aef\u548c\u7b2c\u4e8c\u4e2a\u7ec8\u7aef\u8f93\u51fa\u7684\u201cHello\uff0c World\uff01\u201d\u518d\u7b4960S\uff0c\u4f1a…\uff1a<\/p>\n
\"\"<\/p>\n
\u670d\u52a1\u5668\u5de5\u4f5c\u7684\u65b9\u5f0f\u662f\uff1a\u670d\u52a1\u5668\u5904\u7406\u5b8c\u7b2c\u4e00\u4e2a\u8bf7\u6c42\uff0c\u53ea\u6709\u7b49\u776160S\u79d2\u624d\u80fd\u5904\u7406\u7b2c\u4e8c\u4e2a\u8bf7\u6c42\u3002\u8fd9\u4e00\u5207\u90fd\u662f\u4f9d\u6b21\u987a\u5e8f\u53d1\u751f\u6216\u8005\u8fed\u4ee3\u53d1\u751f\uff0c\u5728\u6211\u4eec\u4f8b\u5b50\u4e2d\uff0c\u4e00\u6b21\u53ea\u80fd\u4e00\u4e2a\u5ba2\u6237\u7aef\u8bf7\u6c42\u3002<\/p>\n
\u6211\u4eec\u7a0d\u5fae\u8ba8\u8bba\u4e00\u4e0b\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u5668\u4e4b\u95f4\u7684\u901a\u4fe1\u3002\u4e3a\u4e86\u8ba9\u4e24\u4e2a\u7a0b\u5e8f\u901a\u8fc7\u7f51\u7edc\u8fdb\u884c\u4ea4\u6d41\uff0c\u4ed6\u4eec\u5fc5\u987b\u4f7f\u7528\u5957\u63a5\u5b57\uff08sockets\uff09\u3002\u5728Part1<\/a>\u548cPart2<\/a>\u4e2d\u4e5f\u63d0\u5230\u8fc7\u5957\u63a5\u5b57\u3002\u90a3\u4e48\u4ec0\u4e48\u662f\u5957\u63a5\u5b57\uff1f<\/p>\n
\"\"<\/p>\n
socket\u662f\u901a\u4fe1\u7aef\u70b9\u7684\u62bd\u8c61\uff0c\u5b83\u5141\u8bb8\u4f60\u7684\u7a0b\u5e8f\u8bb8\u901a\u8fc7\u6587\u4ef6\u63cf\u8ff0\u7b26\u53bb\u8ddf\u53e6\u4e00\u4e2a\u7a0b\u5e8f\u4ea4\u6d41\u3002\u672c\u6587\u4e2d\u53ea\u8ba8\u8bbaLinux\/Mac OS X\u4e0a\u7684TCP\/IP\u5957\u63a5\u5b57\u3002\u8981\u7406\u89e3\u4e00\u4e2a\u91cd\u8981\u7684\u6982\u5ff5\u5c31\u662fTCP\u5957\u63a5\u5b57\u5bf9\uff08TCP socket pair\uff09\u3002<\/p>\n
TCP\u8fde\u63a5\u4e2d\u7684\u5957\u63a5\u5b57\u5bf9\u662f\u4e2a\u56db\u5143\u7ec4\uff0c\u7528\u4ee5\u786e\u8ba4\u4e24\u4e2aTCP\u7aef\u70b9\u7684\u8fde\u63a5\uff0c\u5305\u62ec\uff1a\u672c\u5730IP\u3001\u672c\u5730\u7aef\u53e3\u3001\u5916\u90e8IP\u3001\u5916\u90e8\u7aef\u53e3\u3002\u4e00\u4e2a\u5957\u63a5\u5b57\u5bf9\u72ec\u4e00\u65e0\u4e8c\u5730\u8868\u660e\u4e86\u4e00\u4e2a\u7f51\u7edc\u4e0a\u5730\u8fde\u63a5\u3002IP\u548c\u7aef\u53e3\u8fd9\u4e24\u4e2a\u503c\u5e38\u88ab\u53eb\u505asocket\uff0c\u4ed6\u4eec\u4fe9\u53ef\u4ee5\u6807\u660e\u4e00\u4e2a\u7aef\u70b9\u3002\u2014\u2014Unix \u7f51\u7edc\u7f16\u7a0b<\/p><\/blockquote>\n
\"\"<\/p>\n
\u6240\u4ee5\uff0c\u5143\u7ec4{10.10.10.2:49152, 12.12.12.3:8888}\u662f\u4e00\u4e2a\u5957\u63a5\u5b57\u5bf9\uff0c\u80fd\u6807\u660e\u4e24\u4e2a\u7aef\u70b9\u7684\u5728\u5ba2\u6237\u7aef\u4e00\u4fa7\u7684TCP\u8fde\u63a5\uff1b\u5143\u7ec4{12.12.12.3:8888, 10.10.10.2:49152}\u662f\u4e00\u4e2a\u5957\u63a5\u5b57\u5bf9\uff0c\u80fd\u6807\u660e\u4e24\u4e2a\u7aef\u70b9\u7684\u5728\u670d\u52a1\u5668\u7aef\u4e00\u4fa7\u7684TCP\u8fde\u63a5\u3002\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6807\u660e\u670d\u52a1\u5668\u7aefTCP\u8fde\u63a5\u7684IP
\n12.12.12.3\u548c\u7aef\u53e38888\uff0c\u8fd9\u4e24\u4e2a\u503c\u88ab\u79f0\u4e3a\u5957\u63a5\u5b57\uff08\u540c\u6837\u9002\u7528\u4e8e\u5ba2\u6237\u7aef\uff09\u3002\u4e00\u4e2a\u670d\u52a1\u5668\u521b\u5efa\u5957\u63a5\u5b57\u5f00\u59cb\u63a5\u53d7\u5ba2\u6237\u7aef\u8fde\u63a5\u7684\u6807\u51c6\u5316\u6d41\u7a0b\u5982\u4e0b\uff1a<\/p>\n
\"\"<\/p>\n
1.\u670d\u52a1\u5668\u521b\u5efa\u4e00\u4e2aTCP\/IP\u5957\u63a5\u5b57\u3002\u5728python\u4e2d\u53ef\u4ee5\u7528\u4e0b\u9762\u7684\u8bed\u53e5\u5b9e\u73b0\u3002<\/p>\n
\n
listen_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\r\n<\/pre>\n<\/div>\n
2.\u670d\u52a1\u5668\u6216\u8bb8\u8bbe\u7f6e\u4e86\u4e00\u4e9b\u5957\u63a5\u5b57\u9009\u9879\uff08\u8fd9\u4e9b\u90fd\u662f\u53ef\u9009\u7684\uff0c\u4f46\u662f\u4f60\u80fd\u770b\u5230\u4e0a\u9762\u7684\u670d\u52a1\u5668\u4ee3\u7801\u90a3\u4e48\u505a\uff0c\u662f\u4e3a\u4e86\u80fd\u591f\u5728\u4f60\u5173\u505c\u91cd\u542f\u670d\u52a1\u5668\u7684\u65f6\u5019\u80fd\u591f\u91cd\u590d\u4f7f\u7528\u76f8\u540c\u7684\u5730\u5740\uff09<\/p>\n
\n
listen_socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)\r\n<\/pre>\n<\/div>\n
3.\u7136\u540e\uff0c\u670d\u52a1\u5668\u7ed1\u5b9a\u5230\u8fd9\u4e2a\u5730\u5740\u3002\u7ed1\u5b9a\u51fd\u6570\u4e3a\u5957\u63a5\u5b57\u5206\u914d\u4e86\u4e00\u4e2a\u672c\u5730\u534f\u8bae\u5730\u5740\u3002\u4f7f\u7528TCP\uff0c\u8c03\u7528\u7ed1\u5b9a\u51fd\u6570\u5141\u8bb8\u4f60\u53ef\u4ee5\u6307\u5b9a\u4e00\u4e2a\u7aef\u53e3\u3001IP\uff0c\u6216\u8005\u4e24\u4e2a\u90fd\u6307\u5b9a\uff0c\u6216\u8005\u4e24\u4e2a\u90fd\u4e0d\u3002<\/p>\n
\n
listen_socket.bind(SERVER_ADDRESS)\r\n<\/pre>\n<\/div>\n
4.\u63a5\u4e0b\u6765\uff0c\u670d\u52a1\u5668\u4ee4\u5957\u63a5\u5b57\u53d8\u4e3a\u4e00\u4e2a\u76d1\u542c\u5957\u63a5\u5b57<\/p>\n
\n
listen_socket.listen(REQUEST_QUEUE_SIZE)\r\n<\/pre>\n<\/div>\n
\u76d1\u542c\u51fd\u6570\uff08listen\uff09\u53ea\u80fd\u88ab\u670d\u52a1\u5668\u8c03\u7528\uff0c\u5b83\u544a\u8bc9\u5185\u6838\u5e94\u8be5\u63a5\u53d7\u8fd9\u4e2a\u5957\u63a5\u5b57\u7684\u8fde\u63a5\u8bf7\u6c42\u3002<\/p>\n
\u8fd9\u4e9b\u90fd\u5b8c\u6210\u4e86\u4e4b\u540e\uff0c\u670d\u52a1\u5668\u5f00\u59cb\u63a5\u6536\u5ba2\u6237\u7aef\u8fde\u63a5\uff0c\u4e00\u6b21\u53ea\u63a5\u53d7\u4e00\u4e2a\uff0c\u5468\u800c\u590d\u59cb\u3002\u5f53\u8fd9\u6709\u4e00\u4e2a\u53ef\u63a5\u53d7\u7684\u8fde\u63a5\uff0c\u63a5\u53d7\u65b9\u6cd5\uff08accept\uff09\u8fd4\u56de\u4e00\u4e2a\u5df2\u7ecf\u8fde\u63a5\u5ba2\u6237\u7aef\u7684\u5957\u63a5\u5b57\u3002\u7136\u540e\uff0c\u670d\u52a1\u5668\u4ece\u5df2\u8fde\u63a5\u7684\u5ba2\u6237\u7aef\u5957\u63a5\u5b57\u8bfb\u53d6\u8bf7\u6c42\u6570\u636e\uff0c\u6253\u5370\u51fa\u6765\u5e76\u8fd4\u56de\u7ed9\u5ba2\u6237\u7aef\u4e00\u4e2a\u4fe1\u606f\u3002\u63a5\u4e0b\u6765\uff0c\u670d\u52a1\u5668\u5173\u95ed\u4e0e\u5ba2\u6237\u7aef\u7684\u8fde\u63a5\uff0c\u5e76\u51c6\u5907\u597d\u4e0b\u4e00\u6b21\u63a5\u53d7\u4e00\u4e2a\u65b0\u8fde\u63a5\u3002<\/p>\n
\u4e0b\u56fe\u662f\u4e00\u4e2a\u5ba2\u6237\u7aef\u901a\u8fc7TCP\/IP\u4e0e\u670d\u52a1\u5668\u4ea4\u6d41\u662f\u6240\u9700\u8981\u505a\u7684\uff1a<\/p>\n
\"\"<\/p>\n
\u4e0b\u9762\u7684\u4ee3\u7801\u662f\u6709\u4e00\u4e2a\u7b80\u5355\u7684\u4f8b\u5b50\uff0c\u5ba2\u6237\u7aef\u8fde\u63a5\u5230\u4f60\u7684\u670d\u52a1\u5668\uff0c\u53d1\u9001\u4e00\u4e2a\u8bf7\u6c42\uff0c\u8f93\u51fa\u54cd\u5e94\u3002<\/p>\n
import<\/span> socket<\/span>\r\n\r\n # create a socket and connect to a server<\/span>\r\n sock<\/span> =<\/span> socket<\/span>.<\/span>socket<\/span>(<\/span>socket<\/span>.<\/span>AF_INET<\/span>,<\/span> socket<\/span>.<\/span>SOCK_STREAM<\/span>)<\/span>\r\n sock<\/span>.<\/span>connect<\/span>((<\/span>'localhost'<\/span>,<\/span> 8888<\/span>))<\/span>\r\n\r\n # send and receive some data<\/span>\r\n sock<\/span>.<\/span>sendall<\/span>(<\/span>b<\/span>'test'<\/span>)<\/span>\r\n data<\/span> =<\/span> sock<\/span>.<\/span>recv<\/span>(<\/span>1024<\/span>)<\/span>\r\n print<\/span>(<\/span>data<\/span>.<\/span>decode<\/span>())<\/span><\/pre>\n
\u521b\u5efa\u5957\u63a5\u5b57\u4e4b\u540e\uff0c\u5ba2\u6237\u7aef\u9700\u8981\u8fde\u63a5\u5230\u670d\u52a1\u5668\uff0c\u8fd9\u4e00\u52a8\u4f5c\u4f7f\u7528connect\u51fd\u6570\u5b8c\u6210\uff1a<\/p>\n
\n
sock<\/span>.<\/span>connect<\/span>((<\/span>'localhost'<\/span>,<\/span> 8888<\/span>))<\/span>\r\n<\/pre>\n<\/div>\n
\u5ba2\u6237\u7aef\u53ea\u9700\u8981\u63d0\u4f9b\u8fdc\u7aef\u670d\u52a1\u5668\u7684IP\/\u4e3b\u673a\u540d\u548c\u7aef\u53e3\uff0c\u5c31\u80fd\u8fde\u63a5\u3002<\/p>\n
\u6216\u8bb8\u4f60\u5df2\u7ecf\u6ce8\u610f\u5230\u4e86\u5ba2\u6237\u7aef\u4e0d\u4f1a\u8c03\u7528bind\u548caccept\u51fd\u6570\u3002\u5ba2\u6237\u7aef\u4e0d\u9700\u8981\u8c03\u7528bind\u56e0\u4e3a\u5ba2\u6237\u7aef\u4e0d\u5173\u5fc3\u672c\u5730IP\u548c\u672c\u5730\u7aef\u53e3\u3002\u5f53\u5ba2\u6237\u7aef\u9700\u8981\u8c03\u7528connect\u51fd\u6570\u65f6\uff0c\u5185\u6838\u91cc\u7684TCP\/IP\u6808\u4f1a\u81ea\u52a8\u5206\u914d\u672c\u5730IP\u548c\u672c\u5730\u7aef\u53e3\u3002\u8fd9\u4e2a\u672c\u5730\u7aef\u53e3\u88ab\u79f0\u4f5c\u4e34\u65f6\u7aef\u53e3\uff08ephemeral port\uff09\u3002<\/p>\n
\"\"<\/p>\n
\u6709\u4e9b\u670d\u52a1\u5668\u7aef\u53e3\u7528\u6237\u6807\u660e\u67d0\u4e9b\u5ba2\u6237\u7aef\u8fde\u63a5\u7684\u77e5\u540d\u670d\u52a1\uff0c\u56e0\u6b64\u88ab\u79f0\u4e3a\u77e5\u540d\u7aef\u53e3\uff08well-known port\uff09\u4f8b\u5982\uff1a80\u7aef\u53e3\u7528\u4e8eHTTP\u300122\u7aef\u53e3\u7528\u4e8eSSH\u3002\u542f\u52a8python shell\uff0c\u5efa\u7acb\u4e00\u4e2a\u5ba2\u6237\u7aef\u4e0e\u672c\u5730\u670d\u52a1\u5668\u8fde\u63a5\uff0c\u4f60\u4f1a\u770b\u5230\u5185\u6838\u7ed9\u4f60\u521b\u5efa\u7684socket\u5206\u914d\u4e00\u4e2a\u4ec0\u4e48\u6837\u7684\u7aef\u53e3\uff08\u6700\u5f00\u59cb\u8981\u542f\u52a8webserver3a.py<\/a>\u6216\u8005webserver3b.py<\/a>\uff09<\/p>\n
>>><\/span> import<\/span> socket<\/span>\r\n>>><\/span> sock<\/span> =<\/span> socket<\/span>.<\/span>socket<\/span>(<\/span>socket<\/span>.<\/span>AF_INET<\/span>,<\/span> socket<\/span>.<\/span>SOCK_STREAM<\/span>)<\/span>\r\n>>><\/span> sock<\/span>.<\/span>connect<\/span>((<\/span>'localhost'<\/span>,<\/span> 8888<\/span>))<\/span>\r\n>>><\/span> host<\/span>,<\/span> port<\/span> =<\/span> sock<\/span>.<\/span>getsockname<\/span>()[:<\/span>2<\/span>]<\/span>\r\n>>><\/span> host<\/span>,<\/span> port<\/span>\r\n(<\/span>'127.0.0.1'<\/span>,<\/span> 60589<\/span>)<\/span><\/pre>\n
\u4e0a\u9762\u7684\u4f8b\u5b50\u4e2d\uff0c\u5185\u6838\u7ed9\u5957\u63a5\u5b57\u5206\u914d\u4e8660589\u4e34\u65f6\u7aef\u53e3\u3002<\/p>\n
\u4e0b\u9762\u6709\u4e00\u4e9b\u5f88\u91cd\u8981\u7684\u6982\u5ff5\uff0c\u5728\u6211\u516c\u5e03Part2<\/a>\u7b54\u6848\u4e4b\u524d\uff0c\u6211\u9700\u8981\u4f60\u5c3d\u5feb\u5f04\u61c2\u3002\u4f60\u5f88\u5feb\u5c31\u4f1a\u89c1\u8bc6\u5230\u4e3a\u4ec0\u4e48\u8fd9\u4e48\u91cd\u8981\u4e86\u3002\u4e24\u4e2a\u6982\u5ff5\uff1a\u8fdb\u7a0b\uff08process\uff09\u548c\u6587\u4ef6\u63cf\u8ff0\u7b26\uff08file descriptor\uff09\u3002<\/p>\n
\u4ec0\u4e48\u662f\u8fdb\u7a0b\uff1f\u4e00\u4e2a\u8fdb\u7a0b\u5c31\u662f\u4e00\u4e2a\u6267\u884c\u7a0b\u5e8f\u7684\u5b9e\u4f8b\u5316\u3002\u4e3e\u4e2a\u4f8b\u5b50\uff0c\u5f53\u670d\u52a1\u5668\u4ee3\u7801\u5728\u6267\u884c\u65f6\uff0c\u4ed6\u88ab\u52a0\u8f7d\u8fdb\u5185\u5b58\uff0c\u5e76\u4e14\u5b9e\u4f8b\u5316\u4e86\u4e00\u4e2a\u6267\u884c\u7a0b\u5e8f\uff0c\u8fd9\u5c31\u53eb\u8fdb\u7a0b\u3002\u5185\u6838\u8bb0\u5f55\u4e86\u8bb8\u591a\u5173\u4e8e\u8fd9\u4e2a\u8fdb\u7a0b\u7684\u4fe1\u606f\uff0c\u4f8b\u5982\u8fdb\u7a0bID\uff0c\u53ef\u4ee5\u65b9\u4fbf\u7ba1\u7406\u8fdb\u7a0b\u3002\u5f53\u4f60\u8fd0\u884c\u4f60\u7684\u8fed\u4ee3\u670d\u52a1\u5668\uff08webserver3a.py<\/a>\u6216\u8005webserver3b.py<\/a>\uff09\u7684\u65f6\u5019\uff0c\u4f60\u5f00\u542f\u4e86\u4e00\u4e2a\u8fdb\u7a0b\u3002<\/p>\n
\"\"<\/p>\n
\u5728\u7ec8\u7aef\u5f00\u542f\u670d\u52a1\u5668webserver3b.py<\/a><\/p>\n
$ python webserver3b.py<\/pre>\n
\u5e76\u4e14\u5728\u53e6\u4e00\u7ec8\u7aef\u4f7f\u7528ps\u547d\u4ee4\u83b7\u53d6\u8fdb\u7a0b\u4fe1\u606f<\/p>\n
$ ps |<\/span> grep webserver3b |<\/span> grep -v grep\r\n7182<\/span> ttys003    0<\/span>:00.04 python webserver3b.py<\/pre>\n
ps\u547d\u4ee4\u5411\u4f60\u5c55\u793a\u4e86\u4f60\u786e\u5b9e\u53ea\u8fd0\u884c\u4e86webserver3b.py\u8fd9\u4e00\u4e2apython\u8fdb\u7a0b\u3002\u5f53\u4e00\u4e2a\u8fdb\u7a0b\u88ab\u521b\u5efa\uff0c\u5185\u6838\u4f1a\u5206\u914d\u7ed9\u8fdb\u7a0b\u4e00\u4e2aID\uff0c\u53ebPID\u3002\u5728UNIX\u4e2d\uff0c\u6bcf\u4e2a\u7528\u6237\u8fdb\u7a0b\u90fd\u6709\u4e00\u4e2a\u7236\u8fdb\u7a0b\uff0c\u540c\u6837\u4e5f\u6709\u81ea\u5df1\u7684\u7236\u8fdb\u7a0bID\u53ebPPID\uff08parent process ID\u7684\u7b80\u79f0\uff09\u3002\u6211\u5047\u5b9a\u4f60\u8fd0\u884c\u7684\u662fbash shell\uff0c\u5f53\u4f60\u542f\u52a8\u670d\u52a1\u5668\u65f6\uff0c\u4e00\u4e2a\u65b0\u7684\u8fdb\u7a0b\u88ab\u521b\u5efa\uff0c\u5e76\u4e14\u6307\u6d3e\u4e00\u4e2aPID\uff0c\u5b83\u7684PPID\u8bbe\u7f6e\u7684\u662f\u8fd9\u4e2abash shell\u7684ID\u3002<\/p>\n
\"\"<\/p>\n
\u81ea\u5df1\u5c1d\u8bd5\u53bb\u4e86\u89e3\u4ed6\u4eec\u662f\u600e\u4e48\u5de5\u4f5c\u7684\u3002\u518d\u6b21\u542f\u52a8\u4f60\u7684python shell\uff0c\u5185\u6838\u4f1a\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u8fdb\u7a0b\uff0c\u901a\u8fc7\u4f7f\u7528os.getpid()\u548cos.getppid()\u7cfb\u7edf\u51fd\u6570\u6765\u83b7\u53d6python shell\u7684PID\u548cPPID\u3002\u7136\u540e\u5728\u53e6\u4e00\u4e2a\u7ec8\u7aef\uff0c\u4f7f\u7528ps\u3001grep\u547d\u4ee4\u6293\u53d6\u8fd9\u4e2aPPID\u8fdb\u7a0b\u3002\u4e0b\u9762\u7684\u622a\u56fe\u4e2d\uff0c\u4f60\u4f1a\u770b\u5230\u5b50\u8fdb\u7a0bpython shell\u548c\u7236\u8fdb\u7a0bbash shell\u4e4b\u95f4\u7684\u7236\u5b50\u5173\u7cfb\u3002<\/p>\n
\"\"<\/p>\n
\u53e6\u4e00\u4e2a\u91cd\u8981\u7684\u6982\u5ff5\u662f\u6587\u4ef6\u63cf\u8ff0\u7b26\uff08file descriptor\uff09\u3002\u90a3\u4e48\u4ec0\u4e48\u662f\u6587\u4ef6\u63cf\u8ff0\u7b26\uff1f\u5f53\u6253\u5f00\u4e00\u4e2a\u5df2\u5b58\u5728\u7684\u6587\u4ef6\u3001\u521b\u5efa\u4e00\u4e2a\u65b0\u6587\u4ef6\u6216\u8005\u521b\u5efa\u4e00\u4e2a\u5957\u63a5\u5b57\u7684\u65f6\u5019\uff0c\u7cfb\u7edf\u8fd4\u56de\u7ed9\u8fdb\u7a0b\u7684\u4e00\u4e2a\u975e\u8d1f\u6574\u6570\u3002\u4f60\u6216\u8bb8\u5df2\u7ecf\u542c\u8bf4\u8fc7UNIX\u4e2d\u4e07\u7269\u7686\u6587\u4ef6\u3002\u5185\u6838\u901a\u8fc7\u6587\u4ef6\u63cf\u8ff0\u7b26\u6765\u5b9a\u4f4d\u4e00\u4e2a\u8fdb\u7a0b\u6253\u5f00\u7684\u6587\u4ef6\u3002\u5f53\u4f60\u9700\u8981\u8bfb\u5199\u4e00\u4e2a\u6587\u4ef6\u7684\u65f6\u5019\uff0c\u4f60\u9700\u8981\u7528\u6587\u4ef6\u63cf\u8ff0\u7b26\u6765\u6807\u8bc6\u5b83\u3002python\u7ed9\u51fa\u4e86\u4e00\u4e2a\u9ad8\u5c42\u6b21\u7684\u5bf9\u8c61\u6765\u5904\u7406\u6587\u4ef6\u6216\u8005\u5957\u63a5\u5b57\uff0c\u4f60\u4e0d\u5fc5\u4f7f\u7528\u6587\u4ef6\u63cf\u8ff0\u7b26\u6765\u786e\u8ba4\u8fd9\u4e2a\u6587\u4ef6\u4e86\u3002\u4f46\u662f\u5728\u5e95\u5c42\u5b9e\u73b0\u4e2d\uff0c\u8fd9\u5c31\u662f\u4e00\u4e2a\u6587\u4ef6\u6216\u8005\u5957\u63a5\u5b57\u5728UNIX\u7cfb\u7edf\u4e2d\u600e\u6837\u88ab\u786e\u8ba4\u7684\uff1a\u901a\u8fc7\u6574\u578b\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u3002<\/p>\n
\"\"<\/p>\n
\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff1aUNIX shell\u628a0\u53f7\u6587\u4ef6\u63cf\u8ff0\u7b26\u5206\u914d\u7ed9\u4e86\u6807\u51c6\u8f93\u5165\uff0c1\u53f7\u7ed9\u4e86\u6807\u51c6\u8f93\u51fa\uff0c2\u53f7\u7ed9\u4e86\u6807\u51c6\u9519\u8bef\u3002<\/p>\n
\"\"<\/p>\n
\u5c31\u50cf\u6211\u524d\u9762\u63d0\u5230\u7684\uff0c\u5c3d\u7ba1python\u7ed9\u4f60\u4e86\u4e00\u4e2a\u66f4\u9ad8\u5c42\u6b21\u7684\u6587\u4ef6\u6216\u8005\u7c7b\u6587\u4ef6\u5bf9\u8c61\u4f7f\u7528\uff0c\u4f60\u4ecd\u7136\u53ef\u4ee5\u4f7f\u7528\u5bf9\u8c61\u7684fileno()\u51fd\u6570\u6765\u83b7\u53d6\u6587\u4ef6\u5bf9\u5e94\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u3002\u73b0\u5728\u56de\u5230python\u4e2d\uff0c\u6765\u770b\u770b\u600e\u4e48\u505a\u3002<\/p>\n
>>><\/span> import<\/span> sys<\/span>\r\n>>><\/span> sys<\/span>.<\/span>stdin<\/span>\r\n<<\/span>open<\/span> file<\/span> '<stdin>'<\/span>,<\/span> mode<\/span> 'r'<\/span> at<\/span> 0x102beb0c0<\/span>><\/span>\r\n>>><\/span> sys<\/span>.<\/span>stdin<\/span>.<\/span>fileno<\/span>()<\/span>\r\n0<\/span>\r\n>>><\/span> sys<\/span>.<\/span>stdout<\/span>.<\/span>fileno<\/span>()<\/span>\r\n1<\/span>\r\n>>><\/span> sys<\/span>.<\/span>stderr<\/span>.<\/span>fileno<\/span>()<\/span>\r\n2<\/span><\/pre>\n
\u5728python\u4e2d\u4f7f\u7528\u6587\u4ef6\u6216\u8005\u5957\u63a5\u5b57\u7684\u65f6\u5019\uff0c\u4f60\u901a\u5e38\u4f7f\u7528\u9ad8\u5c42\u6b21\u7684\u6587\u4ef6\/\u5957\u63a5\u5b57\u5bf9\u8c61\uff0c\u4f46\u6709\u4e9b\u65f6\u5019\u4f60\u9700\u8981\u76f4\u63a5\u4f7f\u7528\u6587\u4ef6\u63cf\u8ff0\u7b26\u3002\u4e0b\u9762\u6709\u4e00\u4e2a\u4f8b\u5b50\uff0c\u4f60\u53ef\u4ee5\u901a\u8fc7\u8c03\u7528\u4e00\u4e2awrite()\u7cfb\u7edf\u51fd\u6570\u5c06\u5b57\u7b26\u4e32\u76f4\u63a5\u5199\u5165\u5230\u6807\u51c6\u8f93\u51fa\u4e2d\uff0c\u5e76\u4e14\u6574\u578b\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u4f5c\u4e3awrite()\u7684\u4e00\u4e2a\u53c2\u6570\u3002<\/p>\n
>>><\/span> import<\/span> sys<\/span>\r\n>>><\/span> import<\/span> os<\/span>\r\n>>><\/span> res<\/span> =<\/span> os<\/span>.<\/span>write<\/span>(<\/span>sys<\/span>.<\/span>stdout<\/span>.<\/span>fileno<\/span>(),<\/span> 'hello<\/span>\\n<\/span>'<\/span>)<\/span>\r\nhello<\/span><\/pre>\n
\u8fd9\u91cc\u8fd8\u6709\u4e00\u90e8\u5206\u633a\u6709\u610f\u601d\uff0c\u6216\u8bb8\u4e0d\u4f1a\u8ba9\u4f60\u5403\u60ca\uff0c\u4f60\u5df2\u7ecf\u77e5\u9053\u4e86UNIX\u4e2d\u4e07\u7269\u7686\u6587\u4ef6\uff0c\u5957\u63a5\u5b57\u4e5f\u6709\u4e00\u4e2a\u4e0e\u4e4b\u76f8\u5173\u8054\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u3002\u518d\u6b21\uff0c\u5f53\u4f60\u5728python\u4e2d\u521b\u5efa\u4e00\u4e2a\u5957\u63a5\u5b57\u7684\u65f6\u5019\uff0c\u4f60\u5f97\u5230\u4e00\u4e2a\u8fd4\u56de\u5bf9\u8c61\u800c\u4e0d\u662f\u4e00\u4e2a\u975e\u8d1f\u6574\u6570\uff0c\u4f46\u4f60\u540c\u6837\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528fileno()\u51fd\u6570\u83b7\u53d6\u6587\u4ef6\u63cf\u8ff0\u7b26\u3002\u670b\u53cb\u4eec\uff0c\u77e5\u8bc6\u70b9\uff01<\/p>\n
>>><\/span> import<\/span> socket<\/span>\r\n>>><\/span> sock<\/span> =<\/span> socket<\/span>.<\/span>socket<\/span>(<\/span>socket<\/span>.<\/span>AF_INET<\/span>,<\/span> socket<\/span>.<\/span>SOCK_STREAM<\/span>)<\/span>\r\n>>><\/span> sock<\/span>.<\/span>fileno<\/span>()<\/span>\r\n3<\/span><\/pre>\n
\u8fd8\u6709\u4e00\u70b9\u6211\u8981\u63d0\u7684\uff1a\u6216\u8bb8\u5728\u7b2c\u4e8c\u4e2a\u4f8b\u5b50\u8fed\u4ee3\u670d\u52a1\u5668webserver3b.py<\/a>\u4e2d\u4f60\u5df2\u7ecf\u6ce8\u610f\u5230\u4e86\uff0c\u5f53\u670d\u52a1\u5668\u8fdb\u7a0b\u6b63\u5728\u7761\u90a360S\u7684\u65f6\u5019\uff0c\u4f60\u662f\u5426\u4ecd\u7136\u53ef\u4ee5\u4f7f\u7528curl\u547d\u4ee4\u548c\u670d\u52a1\u5668\u8fde\u63a5\uff1f\u5f53\u7136\uff0ccurl\u4e0d\u4f1a\u7acb\u523b\u8f93\u51fa\u4ec0\u4e48\u4e1c\u897f\uff0c\u4ed6\u53ea\u662f\u7b49\u5728\u90a3\u513f\uff0c\u4f46\u662f\u670d\u52a1\u5668\u6ca1\u6709\u63a5\u53d7\u8fde\u63a5\uff0c\u5ba2\u6237\u7aef\u4e5f\u6ca1\u6709\u7acb\u523b\u88ab\u62d2\u7edd\uff0c\u5374\u4efb\u7136\u80fd\u591f\u94fe\u63a5\u5230\u670d\u52a1\u5668\uff1f\u7b54\u6848\u5c31\u662f\u5957\u63a5\u5b57\u5bf9\u8c61\u7684listen()\u51fd\u6570\u548c\u5b83\u7684BACKLOG\u53c2\u6570\uff0c\u5728\u4ee3\u7801\u4e2d\u6211\u79f0\u4e4b\u4e3aREQUEST_QUEUE_SIZE\u3002BACKLOG\u53c2\u6570\u51b3\u5b9a\u4e86\u5185\u6838\u4e2d\u65b0\u8fdb\u6765\u7684\u8fde\u63a5\u8bf7\u6c42\u961f\u5217\u957f\u5ea6\u3002\u5f53\u670d\u52a1\u5668\uff08webserver3b.py<\/a>\uff09\u5728\u7761\u5927\u89c9\u7684\u65f6\u5019\uff0c\u4f60\u6267\u884c\u7684\u7b2c\u4e8c\u4e2acurl\u547d\u4ee4\u80fd\u8fde\u63a5\u81f3\u670d\u52a1\u5668\uff0c\u56e0\u4e3a\u5728\u5185\u6838\u4e2d\u7684\u8fde\u63a5\u8bf7\u6c42\u961f\u5217\u6709\u8db3\u591f\u7684\u7a7a\u95f4\u3002<\/p>\n
\u5f53\u589e\u5927BACKLOG\u53c2\u6570\u7684\u65f6\u5019\uff0c\u5e76\u4e0d\u4f1a\u795e\u5668\u7684\u5c06\u4f60\u7684\u670d\u52a1\u5668\u7f16\u7a0b\u4e00\u6b21\u80fd\u5904\u7406\u591a\u4e2a\u5ba2\u6237\u7aef\u8bf7\u6c42\u7684\u670d\u52a1\u5668\uff0c\u4f46\u8bbe\u7f6e\u4e00\u4e2a\u8f83\u5927\u7684BACKLOG\u53c2\u6570\uff0c\u5bf9\u4e8e\u4e00\u4e2a\u6bd4\u8f83\u7e41\u5fd9\u7684\u670d\u52a1\u5668\u6765\u8bf4\u5f88\u91cd\u8981\u3002\u8fd9\u6837\u4e00\u6765\uff0c\u670d\u52a1\u5668\u53ef\u4ee5\u4e4b\u95f4\u4ece\u961f\u5217\u4e2d\u83b7\u53d6\u4e00\u4e2a\u8fde\u63a5\u5e76\u5f00\u59cb\u5904\u7406\u5ba2\u6237\u7aef\u8bf7\u6c42\uff0c\u800c\u4e0d\u662f\u7b49\u7740\u65b0\u8fde\u63a5\u7684\u5efa\u7acb\u3002<\/p>\n
\u8bf4\u4e86\u8fd9\u4e48\u591a\uff0c\u6211\u4eec\u8be5\u5feb\u901f\u56de\u987e\u4e00\u4e0b\u524d\u9762\u91cd\u8981\u7684\u77e5\u8bc6\u70b9\u4e86\u3002<\/p>\n
\"\"<\/p>\n