{"id":62,"date":"2019-01-07T15:01:00","date_gmt":"2019-01-07T07:01:00","guid":{"rendered":"http:\/\/www.anthonylee.cn\/myblog\/?p=62"},"modified":"2019-01-07T15:01:00","modified_gmt":"2019-01-07T07:01:00","slug":"websocket%e5%8d%8f%e8%ae%ae","status":"publish","type":"post","link":"http:\/\/www.anthonylee.cn\/myblog\/?p=62","title":{"rendered":"WebSocket\u534f\u8bae"},"content":{"rendered":"

\u4ec0\u4e48\u662fWebSocket<\/strong><\/h1>\n

HTML5\u5f00\u59cb\u63d0\u4f9b\u7684\u4e00\u79cd\u6d4f\u89c8\u5668\u4e0e\u670d\u52a1\u5668\u8fdb\u884c\u5168\u53cc\u5de5\u901a\u8baf\u7684\u7f51\u7edc\u6280\u672f\uff0c\u5c5e\u4e8e\u5e94\u7528\u5c42\u534f\u8bae\u3002\u5b83\u57fa\u4e8eTCP\u4f20\u8f93\u534f\u8bae\uff0c\u5e76\u590d\u7528HTTP\u7684\u63e1\u624b\u901a\u9053\u3002<\/p>\n

\u5bf9\u5927\u90e8\u5206web\u5f00\u53d1\u8005\u6765\u8bf4\uff0c\u4e0a\u9762\u8fd9\u6bb5\u63cf\u8ff0\u6709\u70b9\u67af\u71e5\uff0c\u5176\u5b9e\u53ea\u8981\u8bb0\u4f4f\u51e0\u70b9\uff1a<\/p>\n

\u30101\u3011WebSocket\u53ef\u4ee5\u5728\u6d4f\u89c8\u5668\u91cc\u4f7f\u7528<\/p>\n

\u30102\u3011\u652f\u6301\u53cc\u5411\u901a\u4fe1<\/p>\n

\u30103\u3011\u4f7f\u7528\u5f88\u7b80\u5355<\/p>\n

\n

\u6709\u54ea\u4e9b\u4f18\u70b9<\/strong><\/h1>\n

\u8bf4\u5230\u4f18\u70b9\uff0c\u8fd9\u91cc\u7684\u5bf9\u6bd4\u53c2\u7167\u7269\u662fHTTP\u534f\u8bae\uff0c\u6982\u62ec\u5730\u8bf4\u5c31\u662f\uff1a\u652f\u6301\u53cc\u5411\u901a\u4fe1\uff0c\u66f4\u7075\u6d3b\uff0c\u66f4\u9ad8\u6548\uff0c\u53ef\u6269\u5c55\u6027\u66f4\u597d\u3002<\/p>\n

\u30101\u3011\u652f\u6301\u53cc\u5411\u901a\u4fe1\uff0c\u5b9e\u65f6\u6027\u66f4\u5f3a\u3002<\/p>\n

\u30102\u3011\u66f4\u597d\u7684\u4e8c\u8fdb\u5236\u652f\u6301\u3002<\/p>\n

\u30103\u3011\u8f83\u5c11\u7684\u63a7\u5236\u5f00\u9500\u3002\u8fde\u63a5\u521b\u5efa\u540e\uff0cws\u5ba2\u6237\u7aef\u3001\u670d\u52a1\u7aef\u8fdb\u884c\u6570\u636e\u4ea4\u6362\u65f6\uff0c\u534f\u8bae\u63a7\u5236\u7684\u6570\u636e\u5305\u5934\u90e8\u8f83\u5c0f\u3002\u5728\u4e0d\u5305\u542b\u5934\u90e8\u7684\u60c5\u51b5\u4e0b\uff0c\u670d\u52a1\u7aef\u5230\u5ba2\u6237\u7aef\u7684\u5305\u5934\u53ea\u67092~10\u5b57\u8282\uff08\u53d6\u51b3\u4e8e\u6570\u636e\u5305\u957f\u5ea6\uff09\uff0c\u5ba2\u6237\u7aef\u5230\u670d\u52a1\u7aef\u7684\u7684\u8bdd\uff0c\u9700\u8981\u52a0\u4e0a\u989d\u5916\u76844\u5b57\u8282\u7684\u63a9\u7801\u3002\u800cHTTP\u534f\u8bae\u6bcf\u6b21\u901a\u4fe1\u90fd\u9700\u8981\u643a\u5e26\u5b8c\u6574\u7684\u5934\u90e8\u3002<\/p>\n

\u30104\u3011\u652f\u6301\u6269\u5c55\u3002ws\u534f\u8bae\u5b9a\u4e49\u4e86\u6269\u5c55\uff0c\u7528\u6237\u53ef\u4ee5\u6269\u5c55\u534f\u8bae\uff0c\u6216\u8005\u5b9e\u73b0\u81ea\u5b9a\u4e49\u7684\u5b50\u534f\u8bae\u3002\uff08\u6bd4\u5982\u652f\u6301\u81ea\u5b9a\u4e49\u538b\u7f29\u7b97\u6cd5\u7b49\uff09<\/p>\n

\u5bf9\u4e8e\u540e\u9762\u4e24\u70b9\uff0c\u6ca1\u6709\u7814\u7a76\u8fc7WebSocket\u534f\u8bae\u89c4\u8303\u7684\u540c\u5b66\u53ef\u80fd\u7406\u89e3\u8d77\u6765\u4e0d\u591f\u76f4\u89c2\uff0c\u4f46\u4e0d\u5f71\u54cd\u5bf9WebSocket\u7684\u5b66\u4e60\u548c\u4f7f\u7528\u3002<\/p>\n

 <\/p>\n

\u5982\u4f55\u5efa\u7acb\u8fde\u63a5<\/strong><\/h1>\n

\u524d\u9762\u63d0\u5230\uff0cWebSocket\u590d\u7528\u4e86HTTP\u7684\u63e1\u624b\u901a\u9053\u3002\u5177\u4f53\u6307\u7684\u662f\uff0c\u5ba2\u6237\u7aef\u901a\u8fc7HTTP\u8bf7\u6c42\u4e0eWebSocket\u670d\u52a1\u7aef\u534f\u5546\u5347\u7ea7\u534f\u8bae\u3002<\/p>\n

\u534f\u8bae\u5347\u7ea7\u5b8c\u6210\u540e\uff0c\u540e\u7eed\u7684\u6570\u636e\u4ea4\u6362\u5219\u9075\u7167WebSocket\u7684\u534f\u8bae\u3002<\/p>\n

1\u3001\u5ba2\u6237\u7aef\uff1a\u7533\u8bf7\u534f\u8bae\u5347\u7ea7<\/strong><\/p>\n

\u9996\u5148\uff0c\u5ba2\u6237\u7aef\u53d1\u8d77\u534f\u8bae\u5347\u7ea7\u8bf7\u6c42\u3002<\/p>\n

\u53ef\u4ee5\u770b\u5230\uff0c\u91c7\u7528\u7684\u662f\u6807\u51c6\u7684HTTP\u62a5\u6587\u683c\u5f0f\uff0c\u4e14\u53ea\u652f\u6301GET\u65b9\u6cd5\u3002<\/p>\n

GET \/ HTTP\/1.1\r\nHost: localhost:8080\r\nOrigin: http:\/\/127.0.0.1:3000\r\nConnection: Upgrade\r\nUpgrade: websocket\r\nSec-WebSocket-Version: 13\r\nSec-WebSocket-Key: w4v7O6xFTi36lq3RNcgctw==<\/pre>\n
\u91cd\u70b9\u8bf7\u6c42\u9996\u90e8\u610f\u4e49\u5982\u4e0b\uff1a<\/strong><\/p>\n
\u30101\u3011Connection: Upgrade\uff1a\u8868\u793a\u8981\u5347\u7ea7\u534f\u8bae<\/p>\n
\u30102\u3011Upgrade: websocket\uff1a\u8868\u793a\u8981\u5347\u7ea7\u5230websocket\u534f\u8bae\u3002<\/p>\n
\u30103\u3011Sec-WebSocket-Version: 13\uff1a\u8868\u793awebsocket\u7684\u7248\u672c\u3002\u5982\u679c\u670d\u52a1\u7aef\u4e0d\u652f\u6301\u8be5\u7248\u672c\uff0c\u9700\u8981\u8fd4\u56de\u4e00\u4e2aSec-WebSocket-Versionheader\uff0c\u91cc\u9762\u5305\u542b\u670d\u52a1\u7aef\u652f\u6301\u7684\u7248\u672c\u53f7\u3002<\/p>\n
\u30104\u3011Sec-WebSocket-Key\uff1a\u4e0e\u540e\u9762\u670d\u52a1\u7aef\u54cd\u5e94\u9996\u90e8\u7684Sec-WebSocket-Accept\u662f\u914d\u5957\u7684\uff0c\u63d0\u4f9b\u57fa\u672c\u7684\u9632\u62a4\uff0c\u6bd4\u5982\u6076\u610f\u7684\u8fde\u63a5\uff0c\u6216\u8005\u65e0\u610f\u7684\u8fde\u63a5\u3002<\/p>\n
\u6ce8\u610f\uff0c\u4e0a\u9762\u8bf7\u6c42\u7701\u7565\u4e86\u90e8\u5206\u975e\u91cd\u70b9\u8bf7\u6c42\u9996\u90e8\u3002\u7531\u4e8e\u662f\u6807\u51c6\u7684HTTP\u8bf7\u6c42\uff0c\u7c7b\u4f3cHost\u3001Origin\u3001Cookie\u7b49\u8bf7\u6c42\u9996\u90e8\u4f1a\u7167\u5e38\u53d1\u9001\u3002\u5728\u63e1\u624b\u9636\u6bb5\uff0c\u53ef\u4ee5\u901a\u8fc7\u76f8\u5173\u8bf7\u6c42\u9996\u90e8\u8fdb\u884c \u5b89\u5168\u9650\u5236\u3001\u6743\u9650\u6821\u9a8c\u7b49\u3002<\/pre>\n
2\u3001\u670d\u52a1\u7aef\uff1a\u76f8\u5e94\u534f\u8bae\u5347\u7ea7<\/strong><\/p>\n
\u670d\u52a1\u7aef\u8fd4\u56de\u5185\u5bb9\u5982\u4e0b\uff0c\u72b6\u6001\u4ee3\u7801101\u8868\u793a\u534f\u8bae\u5207\u6362\u3002<\/p>\n
\u5230\u6b64\u5b8c\u6210\u534f\u8bae\u5347\u7ea7\uff0c\u540e\u7eed\u7684\u6570\u636e\u4ea4\u4e92\u90fd\u6309\u7167\u65b0\u7684\u534f\u8bae\u6765\u3002<\/p>\n
HTTP\/1.1 101 Switching Protocols\r\nConnection:Upgrade\r\nUpgrade: websocket\r\nSec-WebSocket-Accept: Oy4NRAQ13jhfONC7bP8dTKb4PTU=\r\n\u5907\u6ce8\uff1a\u6bcf\u4e2aheader\u90fd\u4ee5\r\n\u7ed3\u5c3e\uff0c\u5e76\u4e14\u6700\u540e\u4e00\u884c\u52a0\u4e0a\u4e00\u4e2a\u989d\u5916\u7684\u7a7a\u884c\r\n\u3002\u6b64\u5916\uff0c\u670d\u52a1\u7aef\u56de\u5e94\u7684HTTP\u72b6\u6001\u7801\u53ea\u80fd\u5728\u63e1\u624b\u9636\u6bb5\u4f7f\u7528\u3002\u8fc7\u4e86\u63e1\u624b\u9636\u6bb5\u540e\uff0c\u5c31\u53ea\u80fd\u91c7\u7528\u7279\u5b9a\u7684\u9519\u8bef\u7801\u3002<\/pre>\n
3\u3001Sec-WebSocket-Accept\u7684\u8ba1\u7b97<\/strong><\/p>\n
Sec-WebSocket-Accept\u6839\u636e\u5ba2\u6237\u7aef\u8bf7\u6c42\u9996\u90e8\u7684Sec-WebSocket-Key\u8ba1\u7b97\u51fa\u6765\u3002<\/p>\n
\u8ba1\u7b97\u516c\u5f0f\u4e3a\uff1a<\/p>\n
\u30101\u3011\u5c06Sec-WebSocket-Key\u8ddf258EAFA5-E914-47DA-95CA-C5AB0DC85B11\u62fc\u63a5\u3002<\/p>\n
\u30102\u3011\u901a\u8fc7SHA1\u8ba1\u7b97\u51fa\u6458\u8981\uff0c\u5e76\u8f6c\u6210base64\u5b57\u7b26\u4e32\u3002<\/p>\n
\u4f2a\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n
>toBase64( sha1( Sec-WebSocket-Key + 258EAFA5-E914-47DA-95CA-C5AB0DC85B11 ) )\r\n\r\n<\/pre>\n
\n
\u6570\u636e\u5e27\u683c\u5f0f<\/strong><\/h1>\n
\u5ba2\u6237\u7aef\u3001\u670d\u52a1\u7aef\u6570\u636e\u7684\u4ea4\u6362\uff0c\u79bb\u4e0d\u5f00\u6570\u636e\u5e27\u683c\u5f0f\u7684\u5b9a\u4e49\u3002\u56e0\u6b64\uff0c\u5728\u5b9e\u9645\u8bb2\u89e3\u6570\u636e\u4ea4\u6362\u4e4b\u524d\uff0c\u6211\u4eec\u5148\u6765\u770b\u4e0bWebSocket\u7684\u6570\u636e\u5e27\u683c\u5f0f\u3002<\/p>\n
WebSocket\u5ba2\u6237\u7aef\u3001\u670d\u52a1\u7aef\u901a\u4fe1\u7684\u6700\u5c0f\u5355\u4f4d\u662f\u5e27\uff08frame\uff09\uff0c\u75311\u4e2a\u6216\u591a\u4e2a\u5e27\u7ec4\u6210\u4e00\u6761\u5b8c\u6574\u7684\u6d88\u606f\uff08message\uff09\u3002<\/p>\n
\u30101\u3011\u53d1\u9001\u7aef\uff1a\u5c06\u6d88\u606f\u5207\u5272\u6210\u591a\u4e2a\u5e27\uff0c\u5e76\u53d1\u9001\u7ed9\u670d\u52a1\u7aef\uff1b<\/p>\n
\u30102\u3011\u63a5\u6536\u7aef\uff1a\u63a5\u6536\u6d88\u606f\u5e27\uff0c\u5e76\u5c06\u5173\u8054\u7684\u5e27\u91cd\u65b0\u7ec4\u88c5\u6210\u5b8c\u6574\u7684\u6d88\u606f\uff1b<\/p>\n
\u672c\u8282\u7684\u91cd\u70b9\uff0c\u5c31\u662f\u8bb2\u89e3\u6570\u636e\u5e27<\/strong>\u7684\u683c\u5f0f\u3002<\/p>\n
1\u3001\u6570\u636e\u5e27\u683c\u5f0f\u6982\u89c8<\/strong><\/p>\n
\u4e0b\u9762\u7ed9\u51fa\u4e86WebSocket\u6570\u636e\u5e27\u7684\u7edf\u4e00\u683c\u5f0f\u3002\u719f\u6089TCP\/IP\u534f\u8bae\u7684\u540c\u5b66\u5bf9\u8fd9\u6837\u7684\u56fe\u5e94\u8be5\u4e0d\u964c\u751f\u3002<\/p>\n
\u30101\u3011\u4ece\u5de6\u5230\u53f3\uff0c\u5355\u4f4d\u662f\u6bd4\u7279\u3002\u6bd4\u5982FIN\u3001RSV1\u5404\u5360\u636e1\u6bd4\u7279\uff0copcode\u5360\u636e4\u6bd4\u7279\u3002<\/p>\n
\u30102\u3011\u5185\u5bb9\u5305\u62ec\u4e86\u6807\u8bc6\u3001\u64cd\u4f5c\u4ee3\u7801\u3001\u63a9\u7801\u3001\u6570\u636e\u3001\u6570\u636e\u957f\u5ea6\u7b49\u3002<\/p>\n
\"WebSocket\u534f\u8bae\uff1a5\u5206\u949f\u4ece\u5165\u95e8\u5230\u7cbe\u901a\"<\/div>\n
2\u3001\u6570\u636e\u5e27\u683c\u5f0f\u8be6\u89e3<\/strong><\/p>\n
\u9488\u5bf9\u524d\u9762\u7684\u683c\u5f0f\u6982\u89c8\u56fe\uff0c\u8fd9\u91cc\u9010\u4e2a\u5b57\u6bb5\u8fdb\u884c\u8bb2\u89e3\uff0c\u5982\u6709\u4e0d\u6e05\u695a\u4e4b\u5904\uff0c\u53ef\u53c2\u8003\u534f\u8bae\u89c4\u8303\uff0c\u6216\u7559\u8a00\u4ea4\u6d41\u3002<\/p>\n
FIN<\/strong>\uff1a1\u4e2a\u6bd4\u7279\u3002<\/p>\n
\u5982\u679c\u662f1\uff0c\u8868\u793a\u8fd9\u662f\u6d88\u606f\uff08message\uff09\u7684\u6700\u540e\u4e00\u4e2a\u5206\u7247\uff08fragment\uff09\uff0c\u5982\u679c\u662f0\uff0c\u8868\u793a\u4e0d\u662f\u662f\u6d88\u606f\uff08message\uff09\u7684\u6700\u540e\u4e00\u4e2a\u5206\u7247\uff08fragment\uff09\u3002<\/p>\n
RSV1, RSV2, RSV3<\/strong>\uff1a\u5404\u53601\u4e2a\u6bd4\u7279\u3002<\/p>\n
\u4e00\u822c\u60c5\u51b5\u4e0b\u5168\u4e3a0\u3002\u5f53\u5ba2\u6237\u7aef\u3001\u670d\u52a1\u7aef\u534f\u5546\u91c7\u7528WebSocket\u6269\u5c55\u65f6\uff0c\u8fd9\u4e09\u4e2a\u6807\u5fd7\u4f4d\u53ef\u4ee5\u975e0\uff0c\u4e14\u503c\u7684\u542b\u4e49\u7531\u6269\u5c55\u8fdb\u884c\u5b9a\u4e49\u3002\u5982\u679c\u51fa\u73b0\u975e\u96f6\u7684\u503c\uff0c\u4e14\u5e76\u6ca1\u6709\u91c7\u7528WebSocket\u6269\u5c55\uff0c\u8fde\u63a5\u51fa\u9519\u3002<\/p>\n
Opcode<\/strong>: 4\u4e2a\u6bd4\u7279\u3002<\/p>\n
\u64cd\u4f5c\u4ee3\u7801\uff0cOpcode\u7684\u503c\u51b3\u5b9a\u4e86\u5e94\u8be5\u5982\u4f55\u89e3\u6790\u540e\u7eed\u7684\u6570\u636e\u8f7d\u8377\uff08data payload\uff09\u3002\u5982\u679c\u64cd\u4f5c\u4ee3\u7801\u662f\u4e0d\u8ba4\u8bc6\u7684\uff0c\u90a3\u4e48\u63a5\u6536\u7aef\u5e94\u8be5\u65ad\u5f00\u8fde\u63a5\uff08fail the connection\uff09\u3002\u53ef\u9009\u7684\u64cd\u4f5c\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n
%x0\uff1a\u8868\u793a\u4e00\u4e2a\u5ef6\u7eed\u5e27\u3002\u5f53Opcode\u4e3a0\u65f6\uff0c\u8868\u793a\u672c\u6b21\u6570\u636e\u4f20\u8f93\u91c7\u7528\u4e86\u6570\u636e\u5206\u7247\uff0c\u5f53\u524d\u6536\u5230\u7684\u6570\u636e\u5e27\u4e3a\u5176\u4e2d\u4e00\u4e2a\u6570\u636e\u5206\u7247\u3002\r\n%x1\uff1a\u8868\u793a\u8fd9\u662f\u4e00\u4e2a\u6587\u672c\u5e27\uff08frame\uff09\r\n%x2\uff1a\u8868\u793a\u8fd9\u662f\u4e00\u4e2a\u4e8c\u8fdb\u5236\u5e27\uff08frame\uff09\r\n%x3-7\uff1a\u4fdd\u7559\u7684\u64cd\u4f5c\u4ee3\u7801\uff0c\u7528\u4e8e\u540e\u7eed\u5b9a\u4e49\u7684\u975e\u63a7\u5236\u5e27\u3002\r\n%x8\uff1a\u8868\u793a\u8fde\u63a5\u65ad\u5f00\u3002\r\n%x9\uff1a\u8868\u793a\u8fd9\u662f\u4e00\u4e2aping\u64cd\u4f5c\u3002\r\n%xA\uff1a\u8868\u793a\u8fd9\u662f\u4e00\u4e2apong\u64cd\u4f5c\u3002\r\n%xB-F\uff1a\u4fdd\u7559\u7684\u64cd\u4f5c\u4ee3\u7801\uff0c\u7528\u4e8e\u540e\u7eed\u5b9a\u4e49\u7684\u63a7\u5236\u5e27\u3002<\/pre>\n
Mask<\/strong>: 1\u4e2a\u6bd4\u7279\u3002<\/p>\n
\u8868\u793a\u662f\u5426\u8981\u5bf9\u6570\u636e\u8f7d\u8377\u8fdb\u884c\u63a9\u7801\u64cd\u4f5c\u3002\u4ece\u5ba2\u6237\u7aef\u5411\u670d\u52a1\u7aef\u53d1\u9001\u6570\u636e\u65f6\uff0c\u9700\u8981\u5bf9\u6570\u636e\u8fdb\u884c\u63a9\u7801\u64cd\u4f5c\uff1b\u4ece\u670d\u52a1\u7aef\u5411\u5ba2\u6237\u7aef\u53d1\u9001\u6570\u636e\u65f6\uff0c\u4e0d\u9700\u8981\u5bf9\u6570\u636e\u8fdb\u884c\u63a9\u7801\u64cd\u4f5c\u3002<\/p>\n
\u5982\u679c\u670d\u52a1\u7aef\u63a5\u6536\u5230\u7684\u6570\u636e\u6ca1\u6709\u8fdb\u884c\u8fc7\u63a9\u7801\u64cd\u4f5c\uff0c\u670d\u52a1\u7aef\u9700\u8981\u65ad\u5f00\u8fde\u63a5\u3002<\/p>\n
\u5982\u679cMask\u662f1\uff0c\u90a3\u4e48\u5728Masking-key\u4e2d\u4f1a\u5b9a\u4e49\u4e00\u4e2a\u63a9\u7801\u952e\uff08masking key\uff09\uff0c\u5e76\u7528\u8fd9\u4e2a\u63a9\u7801\u952e\u6765\u5bf9\u6570\u636e\u8f7d\u8377\u8fdb\u884c\u53cd\u63a9\u7801\u3002\u6240\u6709\u5ba2\u6237\u7aef\u53d1\u9001\u5230\u670d\u52a1\u7aef\u7684\u6570\u636e\u5e27\uff0cMask\u90fd\u662f1\u3002<\/p>\n
\u63a9\u7801\u7684\u7b97\u6cd5\u3001\u7528\u9014\u5728\u4e0b\u4e00\u5c0f\u8282\u8bb2\u89e3\u3002<\/p>\n
Payload length<\/strong>\uff1a\u6570\u636e\u8f7d\u8377\u7684\u957f\u5ea6\uff0c\u5355\u4f4d\u662f\u5b57\u8282\u3002\u4e3a7\u4f4d\uff0c\u62167+16\u4f4d\uff0c\u62161+64\u4f4d\u3002<\/p>\n
\u5047\u8bbe\u6570Payload length === x\uff0c\u5982\u679c<\/p>\n
x\u4e3a0~126\uff1a\u6570\u636e\u7684\u957f\u5ea6\u4e3ax\u5b57\u8282\u3002\r\nx\u4e3a126\uff1a\u540e\u7eed2\u4e2a\u5b57\u8282\u4ee3\u8868\u4e00\u4e2a16\u4f4d\u7684\u65e0\u7b26\u53f7\u6574\u6570\uff0c\u8be5\u65e0\u7b26\u53f7\u6574\u6570\u7684\u503c\u4e3a\u6570\u636e\u7684\u957f\u5ea6\u3002\r\nx\u4e3a127\uff1a\u540e\u7eed8\u4e2a\u5b57\u8282\u4ee3\u8868\u4e00\u4e2a64\u4f4d\u7684\u65e0\u7b26\u53f7\u6574\u6570\uff08\u6700\u9ad8\u4f4d\u4e3a0\uff09\uff0c\u8be5\u65e0\u7b26\u53f7\u6574\u6570\u7684\u503c\u4e3a\u6570\u636e\u7684\u957f\u5ea6\u3002<\/pre>\n
\u6b64\u5916\uff0c\u5982\u679cpayload length\u5360\u7528\u4e86\u591a\u4e2a\u5b57\u8282\u7684\u8bdd\uff0cpayload length\u7684\u4e8c\u8fdb\u5236\u8868\u8fbe\u91c7\u7528\u7f51\u7edc\u5e8f\uff08big endian\uff0c\u91cd\u8981\u7684\u4f4d\u5728\u524d\uff09\u3002<\/p>\n
Masking-key<\/strong>\uff1a0\u62164\u5b57\u8282\uff0832\u4f4d\uff09<\/p>\n
\u6240\u6709\u4ece\u5ba2\u6237\u7aef\u4f20\u9001\u5230\u670d\u52a1\u7aef\u7684\u6570\u636e\u5e27\uff0c\u6570\u636e\u8f7d\u8377\u90fd\u8fdb\u884c\u4e86\u63a9\u7801\u64cd\u4f5c\uff0cMask\u4e3a1\uff0c\u4e14\u643a\u5e26\u4e864\u5b57\u8282\u7684Masking-key\u3002\u5982\u679cMask\u4e3a0\uff0c\u5219\u6ca1\u6709Masking-key\u3002<\/p>\n
\u5907\u6ce8\uff1a\u8f7d\u8377\u6570\u636e\u7684\u957f\u5ea6\uff0c\u4e0d\u5305\u62ecmask key\u7684\u957f\u5ea6\u3002<\/p>\n
Payload data<\/strong>\uff1a(x+y) \u5b57\u8282<\/p>\n
\u8f7d\u8377\u6570\u636e\uff1a\u5305\u62ec\u4e86\u6269\u5c55\u6570\u636e\u3001\u5e94\u7528\u6570\u636e\u3002\u5176\u4e2d\uff0c\u6269\u5c55\u6570\u636ex\u5b57\u8282\uff0c\u5e94\u7528\u6570\u636ey\u5b57\u8282\u3002<\/p>\n
\u6269\u5c55\u6570\u636e\uff1a\u5982\u679c\u6ca1\u6709\u534f\u5546\u4f7f\u7528\u6269\u5c55\u7684\u8bdd\uff0c\u6269\u5c55\u6570\u636e\u6570\u636e\u4e3a0\u5b57\u8282\u3002\u6240\u6709\u7684\u6269\u5c55\u90fd\u5fc5\u987b\u58f0\u660e\u6269\u5c55\u6570\u636e\u7684\u957f\u5ea6\uff0c\u6216\u8005\u53ef\u4ee5\u5982\u4f55\u8ba1\u7b97\u51fa\u6269\u5c55\u6570\u636e\u7684\u957f\u5ea6\u3002\u6b64\u5916\uff0c\u6269\u5c55\u5982\u4f55\u4f7f\u7528\u5fc5\u987b\u5728\u63e1\u624b\u9636\u6bb5\u5c31\u534f\u5546\u597d\u3002\u5982\u679c\u6269\u5c55\u6570\u636e\u5b58\u5728\uff0c\u90a3\u4e48\u8f7d\u8377\u6570\u636e\u957f\u5ea6\u5fc5\u987b\u5c06\u6269\u5c55\u6570\u636e\u7684\u957f\u5ea6\u5305\u542b\u5728\u5185\u3002<\/p>\n
\u5e94\u7528\u6570\u636e\uff1a\u4efb\u610f\u7684\u5e94\u7528\u6570\u636e\uff0c\u5728\u6269\u5c55\u6570\u636e\u4e4b\u540e\uff08\u5982\u679c\u5b58\u5728\u6269\u5c55\u6570\u636e\uff09\uff0c\u5360\u636e\u4e86\u6570\u636e\u5e27\u5269\u4f59\u7684\u4f4d\u7f6e\u3002\u8f7d\u8377\u6570\u636e\u957f\u5ea6 \u51cf\u53bb \u6269\u5c55\u6570\u636e\u957f\u5ea6\uff0c\u5c31\u5f97\u5230\u5e94\u7528\u6570\u636e\u7684\u957f\u5ea6\u3002<\/p>\n
3\u3001\u63a9\u7801\u7b97\u6cd5<\/strong><\/p>\n
\u63a9\u7801\u952e\uff08Masking-key\uff09\u662f\u7531\u5ba2\u6237\u7aef\u6311\u9009\u51fa\u6765\u768432\u4f4d\u7684\u968f\u673a\u6570\u3002\u63a9\u7801\u64cd\u4f5c\u4e0d\u4f1a\u5f71\u54cd\u6570\u636e\u8f7d\u8377\u7684\u957f\u5ea6\u3002\u63a9\u7801\u3001\u53cd\u63a9\u7801\u64cd\u4f5c\u90fd\u91c7\u7528\u5982\u4e0b\u7b97\u6cd5\uff1a<\/p>\n
\u9996\u5148\uff0c\u5047\u8bbe\uff1a<\/p>\n
\u30101\u3011original-octet-i\uff1a\u4e3a\u539f\u59cb\u6570\u636e\u7684\u7b2ci\u5b57\u8282\u3002<\/p>\n
\u30102\u3011transformed-octet-i\uff1a\u4e3a\u8f6c\u6362\u540e\u7684\u6570\u636e\u7684\u7b2ci\u5b57\u8282\u3002<\/p>\n
\u30103\u3011j\uff1a\u4e3ai mod 4\u7684\u7ed3\u679c\u3002<\/p>\n
\u30104\u3011masking-key-octet-j\uff1a\u4e3amask key\u7b2cj\u5b57\u8282\u3002<\/p>\n
\u7b97\u6cd5\u63cf\u8ff0\u4e3a\uff1a original-octet-i \u4e0e masking-key-octet-j \u5f02\u6216\u540e\uff0c\u5f97\u5230 transformed-octet-i\u3002<\/p>\n
j = i MOD 4\r\ntransformed-octet-i = original-octet-i XOR masking-key-octet-j\r\n\r\n<\/pre>\n
\n
\u6570\u636e\u4f20\u9012<\/strong><\/h1>\n
\u4e00\u65e6WebSocket\u5ba2\u6237\u7aef\u3001\u670d\u52a1\u7aef\u5efa\u7acb\u8fde\u63a5\u540e\uff0c\u540e\u7eed\u7684\u64cd\u4f5c\u90fd\u662f\u57fa\u4e8e\u6570\u636e\u5e27\u7684\u4f20\u9012\u3002<\/p>\n
WebSocket\u6839\u636eopcode\u6765\u533a\u5206\u64cd\u4f5c\u7684\u7c7b\u578b\u3002\u6bd4\u59820x8\u8868\u793a\u65ad\u5f00\u8fde\u63a5\uff0c0x0-0x2\u8868\u793a\u6570\u636e\u4ea4\u4e92\u3002<\/p>\n
1\u3001\u6570\u636e\u5206\u7247<\/strong><\/p>\n
WebSocket\u7684\u6bcf\u6761\u6d88\u606f\u53ef\u80fd\u88ab\u5207\u5206\u6210\u591a\u4e2a\u6570\u636e\u5e27\u3002\u5f53WebSocket\u7684\u63a5\u6536\u65b9\u6536\u5230\u4e00\u4e2a\u6570\u636e\u5e27\u65f6\uff0c\u4f1a\u6839\u636eFIN\u7684\u503c\u6765\u5224\u65ad\uff0c\u662f\u5426\u5df2\u7ecf\u6536\u5230\u6d88\u606f\u7684\u6700\u540e\u4e00\u4e2a\u6570\u636e\u5e27\u3002<\/p>\n
FIN=1\u8868\u793a\u5f53\u524d\u6570\u636e\u5e27\u4e3a\u6d88\u606f\u7684\u6700\u540e\u4e00\u4e2a\u6570\u636e\u5e27\uff0c\u6b64\u65f6\u63a5\u6536\u65b9\u5df2\u7ecf\u6536\u5230\u5b8c\u6574\u7684\u6d88\u606f\uff0c\u53ef\u4ee5\u5bf9\u6d88\u606f\u8fdb\u884c\u5904\u7406\u3002FIN=0\uff0c\u5219\u63a5\u6536\u65b9\u8fd8\u9700\u8981\u7ee7\u7eed\u76d1\u542c\u63a5\u6536\u5176\u4f59\u7684\u6570\u636e\u5e27\u3002<\/p>\n
\u6b64\u5916\uff0copcode\u5728\u6570\u636e\u4ea4\u6362\u7684\u573a\u666f\u4e0b\uff0c\u8868\u793a\u7684\u662f\u6570\u636e\u7684\u7c7b\u578b\u30020x01\u8868\u793a\u6587\u672c\uff0c0x02\u8868\u793a\u4e8c\u8fdb\u5236\u3002\u800c0x00\u6bd4\u8f83\u7279\u6b8a\uff0c\u8868\u793a\u5ef6\u7eed\u5e27\uff08continuation frame\uff09\uff0c\u987e\u540d\u601d\u4e49\uff0c\u5c31\u662f\u5b8c\u6574\u6d88\u606f\u5bf9\u5e94\u7684\u6570\u636e\u5e27\u8fd8\u6ca1\u63a5\u6536\u5b8c\u3002<\/p>\n
2\u3001\u6570\u636e\u5206\u7247\u4f8b\u5b50<\/strong><\/p>\n
\u76f4\u63a5\u770b\u4f8b\u5b50\u66f4\u5f62\u8c61\u4e9b\u3002\u4e0b\u9762\u4f8b\u5b50\u6765\u81eaMDN\uff0c\u53ef\u4ee5\u5f88\u597d\u5730\u6f14\u793a\u6570\u636e\u7684\u5206\u7247\u3002\u5ba2\u6237\u7aef\u5411\u670d\u52a1\u7aef\u4e24\u6b21\u53d1\u9001\u6d88\u606f\uff0c\u670d\u52a1\u7aef\u6536\u5230\u6d88\u606f\u540e\u56de\u5e94\u5ba2\u6237\u7aef\uff0c\u8fd9\u91cc\u4e3b\u8981\u770b\u5ba2\u6237\u7aef\u5f80\u670d\u52a1\u7aef\u53d1\u9001\u7684\u6d88\u606f\u3002<\/p>\n
\u7b2c\u4e00\u6761\u6d88\u606f<\/strong><\/p>\n
FIN=1, \u8868\u793a\u662f\u5f53\u524d\u6d88\u606f\u7684\u6700\u540e\u4e00\u4e2a\u6570\u636e\u5e27\u3002\u670d\u52a1\u7aef\u6536\u5230\u5f53\u524d\u6570\u636e\u5e27\u540e\uff0c\u53ef\u4ee5\u5904\u7406\u6d88\u606f\u3002opcode=0x1\uff0c\u8868\u793a\u5ba2\u6237\u7aef\u53d1\u9001\u7684\u662f\u6587\u672c\u7c7b\u578b\u3002<\/p>\n
\u7b2c\u4e8c\u6761\u6d88\u606f<\/strong><\/p>\n
\u30101\u3011FIN=0\uff0copcode=0x1\uff0c\u8868\u793a\u53d1\u9001\u7684\u662f\u6587\u672c\u7c7b\u578b\uff0c\u4e14\u6d88\u606f\u8fd8\u6ca1\u53d1\u9001\u5b8c\u6210\uff0c\u8fd8\u6709\u540e\u7eed\u7684\u6570\u636e\u5e27\u3002<\/p>\n
\u30102\u3011FIN=0\uff0copcode=0x0\uff0c\u8868\u793a\u6d88\u606f\u8fd8\u6ca1\u53d1\u9001\u5b8c\u6210\uff0c\u8fd8\u6709\u540e\u7eed\u7684\u6570\u636e\u5e27\uff0c\u5f53\u524d\u7684\u6570\u636e\u5e27\u9700\u8981\u63a5\u5728\u4e0a\u4e00\u6761\u6570\u636e\u5e27\u4e4b\u540e\u3002<\/p>\n
\u30103\u3011FIN=1\uff0copcode=0x0\uff0c\u8868\u793a\u6d88\u606f\u5df2\u7ecf\u53d1\u9001\u5b8c\u6210\uff0c\u6ca1\u6709\u540e\u7eed\u7684\u6570\u636e\u5e27\uff0c\u5f53\u524d\u7684\u6570\u636e\u5e27\u9700\u8981\u63a5\u5728\u4e0a\u4e00\u6761\u6570\u636e\u5e27\u4e4b\u540e\u3002\u670d\u52a1\u7aef\u53ef\u4ee5\u5c06\u5173\u8054\u7684\u6570\u636e\u5e27\u7ec4\u88c5\u6210\u5b8c\u6574\u7684\u6d88\u606f\u3002<\/p>\n
\n
\u8fde\u63a5\u4fdd\u6301+\u5fc3\u8df3<\/strong><\/h1>\n
WebSocket\u4e3a\u4e86\u4fdd\u6301\u5ba2\u6237\u7aef\u3001\u670d\u52a1\u7aef\u7684\u5b9e\u65f6\u53cc\u5411\u901a\u4fe1\uff0c\u9700\u8981\u786e\u4fdd\u5ba2\u6237\u7aef\u3001\u670d\u52a1\u7aef\u4e4b\u95f4\u7684TCP\u901a\u9053\u4fdd\u6301\u8fde\u63a5\u6ca1\u6709\u65ad\u5f00\u3002\u7136\u800c\uff0c\u5bf9\u4e8e\u957f\u65f6\u95f4\u6ca1\u6709\u6570\u636e\u5f80\u6765\u7684\u8fde\u63a5\uff0c\u5982\u679c\u4f9d\u65e7\u957f\u65f6\u95f4\u4fdd\u6301\u7740\uff0c\u53ef\u80fd\u4f1a\u6d6a\u8d39\u5305\u62ec\u7684\u8fde\u63a5\u8d44\u6e90\u3002<\/p>\n
\u4f46\u4e0d\u6392\u9664\u6709\u4e9b\u573a\u666f\uff0c\u5ba2\u6237\u7aef\u3001\u670d\u52a1\u7aef\u867d\u7136\u957f\u65f6\u95f4\u6ca1\u6709\u6570\u636e\u5f80\u6765\uff0c\u4f46\u4ecd\u9700\u8981\u4fdd\u6301\u8fde\u63a5\u3002\u8fd9\u4e2a\u65f6\u5019\uff0c\u53ef\u4ee5\u91c7\u7528\u5fc3\u8df3\u6765\u5b9e\u73b0\u3002<\/p>\n
\u53d1\u9001\u65b9->\u63a5\u6536\u65b9\uff1aping\r\n\u63a5\u6536\u65b9->\u53d1\u9001\u65b9\uff1apong<\/pre>\n
ping\u3001pong\u7684\u64cd\u4f5c\uff0c\u5bf9\u5e94\u7684\u662fWebSocket\u7684\u4e24\u4e2a\u63a7\u5236\u5e27\uff0copcode\u5206\u522b\u662f0x9\u30010xA\u3002<\/p>\n
\u4e3e\u4f8b\uff0cWebSocket\u670d\u52a1\u7aef\u5411\u5ba2\u6237\u7aef\u53d1\u9001ping\uff0c\u53ea\u9700\u8981\u5982\u4e0b\u4ee3\u7801\uff08\u91c7\u7528ws\u6a21\u5757\uff09<\/p>\n
ws.ping('', false, true);<\/pre>\n
\n
Sec-WebSocket-Key\/Accept\u7684\u4f5c\u7528<\/strong><\/h1>\n
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\u4f5c\u7528\u5927\u81f4\u5f52\u7eb3\u5982\u4e0b\uff1a<\/p>\n
\u30101\u3011\u907f\u514d\u670d\u52a1\u7aef\u6536\u5230\u975e\u6cd5\u7684websocket\u8fde\u63a5\uff08\u6bd4\u5982http\u5ba2\u6237\u7aef\u4e0d\u5c0f\u5fc3\u8bf7\u6c42\u8fde\u63a5websocket\u670d\u52a1\uff0c\u6b64\u65f6\u670d\u52a1\u7aef\u53ef\u4ee5\u76f4\u63a5\u62d2\u7edd\u8fde\u63a5\uff09<\/p>\n
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\u30103\u3011\u7528\u6d4f\u89c8\u5668\u91cc\u53d1\u8d77ajax\u8bf7\u6c42\uff0c\u8bbe\u7f6eheader\u65f6\uff0cSec-WebSocket-Key\u4ee5\u53ca\u5176\u4ed6\u76f8\u5173\u7684header\u662f\u88ab\u7981\u6b62\u7684\u3002\u8fd9\u6837\u53ef\u4ee5\u907f\u514d\u5ba2\u6237\u7aef\u53d1\u9001ajax\u8bf7\u6c42\u65f6\uff0c\u610f\u5916\u8bf7\u6c42\u534f\u8bae\u5347\u7ea7\uff08websocket upgrade\uff09<\/p>\n
\u30104\u3011\u53ef\u4ee5\u9632\u6b62\u53cd\u5411\u4ee3\u7406\uff08\u4e0d\u7406\u89e3ws\u534f\u8bae\uff09\u8fd4\u56de\u9519\u8bef\u7684\u6570\u636e\u3002\u6bd4\u5982\u53cd\u5411\u4ee3\u7406\u524d\u540e\u6536\u5230\u4e24\u6b21ws\u8fde\u63a5\u7684\u5347\u7ea7\u8bf7\u6c42\uff0c\u53cd\u5411\u4ee3\u7406\u628a\u7b2c\u4e00\u6b21\u8bf7\u6c42\u7684\u8fd4\u56de\u7ed9cache\u4f4f\uff0c\u7136\u540e\u7b2c\u4e8c\u6b21\u8bf7\u6c42\u5230\u6765\u65f6\u76f4\u63a5\u628acache\u4f4f\u7684\u8bf7\u6c42\u7ed9\u8fd4\u56de\uff08\u65e0\u610f\u4e49\u7684\u8fd4\u56de\uff09\u3002<\/p>\n
\u30105\u3011Sec-WebSocket-Key\u4e3b\u8981\u76ee\u7684\u5e76\u4e0d\u662f\u786e\u4fdd\u6570\u636e\u7684\u5b89\u5168\u6027\uff0c\u56e0\u4e3aSec-WebSocket-Key\u3001Sec-WebSocket-Accept\u7684\u8f6c\u6362\u8ba1\u7b97\u516c\u5f0f\u662f\u516c\u5f00\u7684\uff0c\u800c\u4e14\u975e\u5e38\u7b80\u5355\uff0c\u6700\u4e3b\u8981\u7684\u4f5c\u7528\u662f\u9884\u9632\u4e00\u4e9b\u5e38\u89c1\u7684\u610f\u5916\u60c5\u51b5\uff08\u975e\u6545\u610f\u7684\uff09\u3002<\/p>\n
\u5f3a\u8c03\uff1aSec-WebSocket-Key\/Sec-WebSocket-Accept \u7684\u6362\u7b97\uff0c\u53ea\u80fd\u5e26\u6765\u57fa\u672c\u7684\u4fdd\u969c\uff0c\u4f46\u8fde\u63a5\u662f\u5426\u5b89\u5168\u3001\u6570\u636e\u662f\u5426\u5b89\u5168\u3001\u5ba2\u6237\u7aef\/\u670d\u52a1\u7aef\u662f\u5426\u5408\u6cd5\u7684 ws\u5ba2\u6237\u7aef\u3001ws\u670d\u52a1\u7aef\uff0c\u5176\u5b9e\u5e76\u6ca1\u6709\u5b9e\u9645\u6027\u7684\u4fdd\u8bc1\u3002<\/pre>\n
\n
\u6570\u636e\u63a9\u7801\u7684\u4f5c\u7528<\/strong><\/h1>\n
WebSocket\u534f\u8bae\u4e2d\uff0c\u6570\u636e\u63a9\u7801\u7684\u4f5c\u7528\u662f\u589e\u5f3a\u534f\u8bae\u7684\u5b89\u5168\u6027\u3002\u4f46\u6570\u636e\u63a9\u7801\u5e76\u4e0d\u662f\u4e3a\u4e86\u4fdd\u62a4\u6570\u636e\u672c\u8eab\uff0c\u56e0\u4e3a\u7b97\u6cd5\u672c\u8eab\u662f\u516c\u5f00\u7684\uff0c\u8fd0\u7b97\u4e5f\u4e0d\u590d\u6742\u3002\u9664\u4e86\u52a0\u5bc6\u901a\u9053\u672c\u8eab\uff0c\u4f3c\u4e4e\u6ca1\u6709\u592a\u591a\u6709\u6548\u7684\u4fdd\u62a4\u901a\u4fe1\u5b89\u5168\u7684\u529e\u6cd5\u3002<\/p>\n
\u90a3\u4e48\u4e3a\u4ec0\u4e48\u8fd8\u8981\u5f15\u5165\u63a9\u7801\u8ba1\u7b97\u5462\uff0c\u9664\u4e86\u589e\u52a0\u8ba1\u7b97\u673a\u5668\u7684\u8fd0\u7b97\u91cf\u5916\u4f3c\u4e4e\u5e76\u6ca1\u6709\u592a\u591a\u7684\u6536\u76ca\uff08\u8fd9\u4e5f\u662f\u4e0d\u5c11\u540c\u5b66\u7591\u60d1\u7684\u70b9\uff09\u3002<\/p>\n
\u7b54\u6848\u8fd8\u662f\u4e24\u4e2a\u5b57\uff1a\u5b89\u5168<\/strong>\u3002\u4f46\u5e76\u4e0d\u662f\u4e3a\u4e86\u9632\u6b62\u6570\u636e\u6cc4\u5bc6\uff0c\u800c\u662f\u4e3a\u4e86\u9632\u6b62\u65e9\u671f\u7248\u672c\u7684\u534f\u8bae\u4e2d\u5b58\u5728\u7684\u4ee3\u7406\u7f13\u5b58\u6c61\u67d3\u653b\u51fb\uff08proxy cache poisoning attacks\uff09\u7b49\u95ee\u9898\u3002<\/p>\n
1\u3001\u4ee3\u7406\u7f13\u5b58\u6c61\u67d3\u653b\u51fb<\/strong><\/p>\n
\u5728\u6b63\u5f0f\u63cf\u8ff0\u653b\u51fb\u6b65\u9aa4\u4e4b\u524d\uff0c\u6211\u4eec\u5047\u8bbe\u6709\u5982\u4e0b\u53c2\u4e0e\u8005\uff1a<\/p>\n
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\u30102\u3011\u53d7\u5bb3\u8005\u3001\u53d7\u5bb3\u8005\u60f3\u8981\u8bbf\u95ee\u7684\u8d44\u6e90\uff08\u7b80\u79f0\u201c\u6b63\u4e49\u8d44\u6e90\u201d\uff09<\/p>\n
\u30103\u3011\u53d7\u5bb3\u8005\u5b9e\u9645\u60f3\u8981\u8bbf\u95ee\u7684\u670d\u52a1\u5668\uff08\u7b80\u79f0\u201c\u6b63\u4e49\u670d\u52a1\u5668\u201d\uff09<\/p>\n
\u30104\u3011\u4e2d\u95f4\u4ee3\u7406\u670d\u52a1\u5668<\/p>\n
\u653b\u51fb\u6b65\u9aa4\u4e00\uff1a<\/strong><\/p>\n
\u30101\u3011\u653b\u51fb\u8005<\/strong>\u6d4f\u89c8\u5668 \u5411\u00a0\u90aa\u6076\u670d\u52a1\u5668<\/strong>\u00a0\u53d1\u8d77WebSocket\u8fde\u63a5\u3002\u6839\u636e\u524d\u6587\uff0c\u9996\u5148\u662f\u4e00\u4e2a\u534f\u8bae\u5347\u7ea7\u8bf7\u6c42\u3002<\/p>\n
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\u30103\u3011\u4ee3\u7406\u670d\u52a1\u5668<\/strong>\u00a0\u5c06\u534f\u8bae\u5347\u7ea7\u8bf7\u6c42\u8f6c\u53d1\u5230\u00a0\u90aa\u6076\u670d\u52a1\u5668<\/strong>\u3002<\/p>\n
\u30104\u3011\u90aa\u6076\u670d\u52a1\u5668<\/strong>\u00a0\u540c\u610f\u8fde\u63a5\uff0c\u4ee3\u7406\u670d\u52a1\u5668<\/strong>\u00a0\u5c06\u54cd\u5e94\u8f6c\u53d1\u7ed9\u00a0\u653b\u51fb\u8005<\/strong>\u3002<\/p>\n
\u7531\u4e8e upgrade \u7684\u5b9e\u73b0\u4e0a\u6709\u7f3a\u9677\uff0c\u4ee3\u7406\u670d\u52a1\u5668<\/strong>\u00a0\u4ee5\u4e3a\u4e4b\u524d\u8f6c\u53d1\u7684\u662f\u666e\u901a\u7684HTTP\u6d88\u606f\u3002\u56e0\u6b64\uff0c\u5f53\u534f\u8bae\u670d\u52a1\u5668<\/strong>\u00a0\u540c\u610f\u8fde\u63a5\uff0c\u4ee3\u7406\u670d\u52a1\u5668<\/strong>\u4ee5\u4e3a\u672c\u6b21\u4f1a\u8bdd\u5df2\u7ecf\u7ed3\u675f\u3002<\/p>\n
\u653b\u51fb\u6b65\u9aa4\u4e8c\uff1a<\/strong><\/p>\n
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\u30103\u3011\u4ee3\u7406\u670d\u52a1\u5668<\/strong>\u00a0\u5411\u00a0\u90aa\u6076\u670d\u52a1\u5668<\/strong>\u00a0\u8bf7\u6c42\u00a0\u90aa\u6076\u8d44\u6e90<\/strong>\u3002<\/p>\n
\u30104\u3011\u90aa\u6076\u670d\u52a1\u5668<\/strong>\u00a0\u8fd4\u56de\u00a0\u90aa\u6076\u8d44\u6e90<\/strong>\u3002\u4ee3\u7406\u670d\u52a1\u5668<\/strong>\u00a0\u7f13\u5b58\u4f4f\u00a0\u90aa\u6076\u8d44\u6e90<\/strong>\uff08url\u662f\u5bf9\u7684\uff0c\u4f46host\u662f\u00a0\u6b63\u4e49\u670d\u52a1\u5668<\/strong>\u00a0\u7684\u5730\u5740\uff09\u3002<\/p>\n
\u5230\u8fd9\u91cc\uff0c\u53d7\u5bb3\u8005\u53ef\u4ee5\u767b\u573a\u4e86\uff1a<\/strong><\/p>\n
\u30101\u3011\u53d7\u5bb3\u8005<\/strong>\u00a0\u901a\u8fc7\u00a0\u4ee3\u7406\u670d\u52a1\u5668<\/strong>\u00a0\u8bbf\u95ee\u00a0\u6b63\u4e49\u670d\u52a1\u5668<\/strong>\u00a0\u7684\u00a0\u6b63\u4e49\u8d44\u6e90<\/strong>\u3002<\/p>\n
\u30102\u3011\u4ee3\u7406\u670d\u52a1\u5668<\/strong>\u00a0\u68c0\u67e5\u8be5\u8d44\u6e90\u7684url\u3001host\uff0c\u53d1\u73b0\u672c\u5730\u6709\u4e00\u4efd\u7f13\u5b58\uff08\u4f2a\u9020\u7684\uff09\u3002<\/p>\n
\u30103\u3011\u4ee3\u7406\u670d\u52a1\u5668<\/strong>\u00a0\u5c06\u00a0\u90aa\u6076\u8d44\u6e90<\/strong>\u00a0\u8fd4\u56de\u7ed9\u00a0\u53d7\u5bb3\u8005<\/strong>\u3002<\/p>\n
\u30104\u3011\u53d7\u5bb3\u8005<\/strong>\u00a0\u5352\u3002<\/p>\n
2\u3001\u5f53\u524d\u89e3\u51b3\u65b9\u6848<\/strong><\/p>\n
\u6700\u521d\u7684\u63d0\u6848\u662f\u5bf9\u6570\u636e\u8fdb\u884c\u52a0\u5bc6\u5904\u7406\u3002\u57fa\u4e8e\u5b89\u5168\u3001\u6548\u7387\u7684\u8003\u8651\uff0c\u6700\u7ec8\u91c7\u7528\u4e86\u6298\u4e2d\u7684\u65b9\u6848\uff1a\u5bf9\u6570\u636e\u8f7d\u8377\u8fdb\u884c\u63a9\u7801\u5904\u7406\u3002<\/p>\n
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\n
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