{"id":759,"date":"2011-10-27T09:04:18","date_gmt":"2011-10-27T09:04:18","guid":{"rendered":"http:\/\/fdream.net\/blog\/?p=759"},"modified":"2011-10-28T09:11:59","modified_gmt":"2011-10-28T09:11:59","slug":"websocket%e8%8d%89%e6%a1%8810%e6%96%87%e6%9c%ac%e6%95%b0%e6%8d%ae%e8%a7%a3%e6%9e%90%e5%ae%9e%e7%8e%b0","status":"publish","type":"post","link":"https:\/\/fdream.net\/blog\/article\/759","title":{"rendered":"WebSocket\u8349\u684810\u6587\u672c\u6570\u636e\u89e3\u6790\u5b9e\u73b0"},"content":{"rendered":"<p>\u63e1\u624b\u534f\u8bae\u5b9e\u73b0\u4e86\uff0c\u63a5\u4e0b\u6765\u5c31\u662f\u89e3\u6790\u6570\u636e\u4e86\uff0c\u8fd9\u4e2a\u76f8\u5bf9\u6765\u8bf4\u8981\u9ebb\u70e6\u5f88\u591a\uff0c\u76f8\u6bd4\u8349\u68487.6\u53d8\u5f97\u66f4\u590d\u6742\u4e86\u3002\u4e0b\u56fe\u662f\u6570\u636e\u4f20\u8f93\u7684\u683c\u5f0f\uff1a<\/p>\n<p><a href=\"http:\/\/fdream.net\/blog\/wp-content\/uploads\/2011\/10\/websocket.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-760\" title=\"websocket\" src=\"http:\/\/fdream.net\/blog\/wp-content\/uploads\/2011\/10\/websocket.png\" alt=\"\" width=\"476\" height=\"281\" srcset=\"https:\/\/fdream.net\/blog\/wp-content\/uploads\/2011\/10\/websocket.png 476w, https:\/\/fdream.net\/blog\/wp-content\/uploads\/2011\/10\/websocket-300x177.png 300w\" sizes=\"auto, (max-width: 476px) 100vw, 476px\" \/><\/a><\/p>\n<p>\u5404\u4e2a\u503c\u7684\u5177\u4f53\u542b\u4e49\u53ef\u4ee5\u53c2\u8003\u8fd9\u4e2a\u4e2d\u6587\u7ffb\u8bd1\uff1a<a href=\"http:\/\/blog.csdn.net\/fenglibing\/article\/details\/6852497\">http:\/\/blog.csdn.net\/fenglibing\/article\/details\/6852497<\/a>\uff0c\u82f1\u6587\u539f\u6587\u5728\u8fd9\u91cc\uff1a<a href=\"http:\/\/tools.ietf.org\/html\/draft-ietf-hybi-thewebsocketprotocol-10#section-4.2\">http:\/\/tools.ietf.org\/html\/draft-ietf-hybi-thewebsocketprotocol-10#section-4.2<\/a><\/p>\n<p>\u7b80\u5355\u6982\u62ec\u4e00\u4e0b\u5c31\u662f\uff1aFIN\u4e00\u76f4\u4e3a1\uff0cRSV1\u3001RSV2\u3001RSV3\u4e00\u76f4\u4e3a0\uff0c\u5f53\u53d1\u9001\u5185\u5bb9\u4e3a\u6587\u672c\u65f6\uff0copcode\u4e3a1\uff0cMASK\u5982\u679c\u4e3a1\u5c31\u4f7f\u7528\u63a9\u7801\uff0c\u9700\u8981\u83b7\u53d6\u56db\u4f4d\u63a9\u7801\uff0c\u4f9d\u6b21\u8f6e\u6d41\u548c\u6570\u636e\u505a\u5f02\u6216\u8fd0\u7b97\uff0c\u7b2c\u4e00\u4e2a\u5185\u5bb9\u6570\u636e\u4e0e\u7b2c\u4e00\u4e2a\u63a9\u7801\u5f02\u6216\uff0c\u7b2c\u4e8c\u4e2a\u5185\u5bb9\u6570\u636e\u4e0e\u7b2c\u4e8c\u4e2a\u63a9\u7801\u5f02\u6216\u2026\u2026\u7b2c\u4e94\u4e2a\u5185\u5bb9\u6570\u636e\u4e0e\u7b2c\u4e00\u4e2a\u63a9\u7801\u5f02\u6216\u2026\u2026\u4e00\u76f4\u5230\u7ed3\u675f\uff0c\u7136\u540e\u518d\u5bf9\u5185\u5bb9\u8fdb\u884c\u7f16\u7801\u5c31\u53ef\u4ee5\u4e86\u3002<\/p>\n<p>\u5728Chrome\/Firefox\u4e0b\u9762\uff0cFIN\u6c38\u8fdc\u4e3a1\uff0c\u5982\u679c\u53ea\u662f\u6587\u672c\u6d88\u606f\uff0copcode\u4e00\u76f4\u662f1\uff0cRSV1\u3001RSV2\u3001RSV3\u90fd\u4e3a0\uff0c\u6240\u4ee5\u7b2c\u4e00\u4e2a\u6570\u636e\u662f0x81\uff1bMASK\u4e3a1\uff0c\u518d\u8ddf\u4e0a\u6570\u636e\u957f\u5ea6\uff0c\u6240\u4ee5\u7b2c\u4e8c\u4e2a\u6570\u636e\u4f1a\u5927\u4e8e0x80\uff0c\u7531\u4e8e\u6570\u636e\u957f\u5ea6\u4e0d\u4e00\u6837\uff0c\u5176\u9700\u8981\u5360\u7528\u7684\u5b57\u8282\u6570\u4e5f\u4e0d\u4e00\u6837\uff0c\u56e0\u6b64\u63a9\u7801\u7684\u4f4d\u7f6e\u4e5f\u4e0d\u4e00\u6837\u3002\u6839\u636e\u89c4\u8303\uff0c\u6362\u7b97\u4e0b\u6765\u662f\u8fd9\u6837\uff1a\u6570\u636e\u603b\u957f\u5ea6\uff08\u5305\u542bFIN\u3001RSV\u7b49\u7b49\u4fe1\u606f\uff09\u5c0f\u4e8e0x84\uff0c\u5219\u63a9\u7801\u4e3a\u7b2c\u4e09\u4e2a\u6570\u636e\u5230\u7b2c\u516d\u4e2a\u6570\u636e\uff1b\u6570\u636e\u603b\u957f\u5ea6\uff08\u5305\u542bFIN\u3001RSV\u7b49\u7b49\u4fe1\u606f\uff09\u5c0f\u4e8e0xfe81\uff0c\u5219\u63a9\u7801\u4e3a\u7b2c\u4e94\u4e2a\u6570\u636e\u5230\u7b2c\u516b\u4e2a\u6570\u636e\uff1b\u5176\u4ed6\u63a9\u7801\u5219\u4e3a\u7b2c\u5341\u4e09\u4e2a\u6570\u636e\u5230\u7b2c\u5341\u516d\u4e2a\u6570\u636e\u3002\u5f53\u6570\u636e\u957f\u5ea6\u8d85\u8fc7\u4e00\u4e2a\u5305\u7684\u957f\u5ea6\u65f6\uff0c\u540e\u9762\u7684\u6570\u636e\u5305\u4e0d\u518d\u5305\u542bRIN\u3001RSV\u548cMASK\u7b49\u4fe1\u606f\uff0c\u4e8c\u662f\u76f4\u63a5\u4e3a\u5185\u5bb9\u6570\u636e\uff0c\u9700\u8981\u6839\u636e\u4e0a\u4e00\u6b21\u53d6\u5230\u7684MASK\u6765\u505a\u5f02\u6216\u8fd0\u7b97\u3002<del datetime=\"2011-10-28T09:04:28+00:00\">\u5728\u5ba2\u6237\u7aef\u4e3b\u52a8\u8981\u6c42\u65ad\u5f00\u94fe\u63a5\u65f6\uff0c\u4f1a\u6ca1\u6709\u5185\u5bb9\u6570\u636e\uff0c\u53ea\u6709\u5934\u4fe1\u606f\u548c\u63a9\u7801\uff0c\u957f\u5ea6\u56fa\u5b9a\u4e3a6\uff0c\u4e3a\u4e86\u907f\u514d\u6df7\u6dc6\uff0cChrome\u4f1a\u4fdd\u8bc1\u6b63\u5e38\u5185\u5bb9\u53d1\u9001\u65f6\u4e0d\u4f1a\u51fa\u73b06\u5b57\u8282\u7684\u6570\u636e\uff0c\u57fa\u672c\u4e0a\u53ef\u4ee5\u628a6\u5b57\u8282\u5f53\u65ad\u5f00\u8fde\u63a5\u8bf7\u6c42\u5904\u7406<\/del>\u3002\u533a\u5206\u5ba2\u6237\u7aef\u4e3b\u52a8\u8981\u6c42\u65ad\u5f00\u8fde\u63a5\u548c\u6b63\u5e38\u7684\u8fde\u7eed\u6570\u636e\u5305\u8981\u6839\u636e\u957f\u5ea6\u533a\u5206\uff1a\u5982\u679c\u662f\u8fde\u7eed\u7684\u6570\u636e\u5305\uff0c\u5219\u5df2\u89e3\u6790\u7684\u5305\u7684\u957f\u5ea6\u4f1a\u5c0f\u4e8e\u9996\u5305\u5934\u4fe1\u606f\u91cc\u7684\u957f\u5ea6\uff0c\u5426\u5219\u5219\u8ba4\u4e3a\u662f\u5ba2\u6237\u7aef\u4e3b\u52a8\u8981\u6c42\u65ad\u5f00\u94fe\u63a5\u3002\u4e3b\u52a8\u65ad\u5f00\u8fde\u63a5\u65f6\u4f1a\u53d1\u9001\u7684\u4e00\u4e2a\u989d\u5916\u7684\u6570\u636e\u5305\uff0c\u6b64\u65f6\u7b2c\u4e00\u4e2a\u5b57\u8282\u4e0d\u4f1a\u4e3a\u6b63\u5e38\u76840x81\uff0c\u901a\u5e38\u4e3a0x88\uff0cNodeJS\u5199\u51fa\u6765\u5927\u81f4\u662f\u8fd9\u6837\u7684\uff1a<\/p>\n<pre lang=\"js\">module.exports = Parser;\r\n\r\nvar util = require('util'),\r\n    events = require('events');\r\n\r\n\/**\r\n* http.Server \u6570\u636e\u89e3\u6790\u7c7b\r\n* *\/\r\nfunction Parser(version) {\r\n     events.EventEmitter.call(this);\r\n\r\n     this.version = version || 'draft10';\r\n    this.length = 0;\r\n    this.parsed = 0;\r\n     this.maskData = [];\r\n     this.frameData = [];\r\n     this.order = 0;\r\n     this.closing = false;\r\n}\r\n\r\nutil.inherits(Parser, events.EventEmitter);\r\n\r\nParser.prototype.write = function(data) {\r\n    console.log(data.length);\r\n     dataParser[this.version](data, this);\r\n};\r\n\r\n\/\/ \u6570\u636e\u89e3\u6790\u5de5\u5177\r\nvar dataParser = {\r\n     'draft10': function(data, parser){\r\n        var pkt, i =0, len = 0, start = 0;\r\n\r\n        \/\/ \u5982\u679c\u4e0d\u5305\u542b\u5305\u5934\uff0c\u800c\u4e14\u6570\u636e\u5df2\u7ecf\u89e3\u6790\u5b8c\u6210\r\n        \/\/ \u5219\u8ba4\u4e3a\u8fd9\u4e2a\u5305\u4e3a\u7ed3\u675f\u5305\uff0c\u9996\u5b57\u8282\u901a\u5e38\u4e3a0x88\r\n        if(data[0] != 0x81 &amp;&amp; parser.length == 0){\r\n            parser.emit('close');\r\n            parser.closing = false;\r\n            return;\r\n        }\r\n\r\n        \/\/ \u8349\u684810\r\n        \/\/ \u9996\u5305\u4f1a\u5305\u542b\u63a9\u7801\u4fe1\u606f\r\n        if(data[0] == 0x81){\r\n            \/\/ \u4f7f\u7528\u4e86\u63a9\u7801\r\n            if(data[1] &gt;= 0x80){\r\n                \/\/ \u6570\u636e\u957f\u5ea6\u4e0d\u4e00\u6837\uff0c\u63a9\u7801\u4f4d\u7f6e\u4e0d\u4e00\u6837\r\n                if(data.length &lt; 0x84){\r\n                    \/\/ firefox\u4e0b\uff0c\u8d85\u8fc7\u4e00\u4e2a\u5305\u957f\u5ea6\u7684\u6570\u636e\u4f1a\u88ab\u62c6\u5206\u4e3a\u591a\u4e2a\u5305\r\n                    \/\/ \u5176\u4e2d\u9996\u5305\u53ea\u5305\u542b\u5934\u4fe1\u606f\uff0c\u7b2c\u4e8c\u4e2a\u5b57\u8282\u4e3a0xfe\r\n                    if(data[1] == 0xfe){\r\n                        len = data.length;\r\n                        \/\/ firefox\r\n                        parser.maskData = [data[len - 4], data[len - 3], data[len - 2], data[len - 1]];                \r\n                        parser.length = data[len - 5];\r\n                        for(i = len - 6; i &gt; 1; i--){\r\n                            parser.length += data[i] * (len - 5 - i) * 256;\r\n                        }\r\n                        console.log('firefox multi packages, length: ', parser.length);\r\n                        start = data.length;\r\n                    }\r\n                    else{\r\n                        \/\/ chrome\r\n                        parser.length = data[1] - 0x80;\r\n                        console.log('7bit, length: ', parser.length);\r\n                        parser.maskData = [data[2], data[3], data[4], data[5]];\r\n                        start = 6;\r\n                    }\r\n                }\r\n                else if(data.length &lt; 0xfe80){                     parser.length = data[2] * 256 + data[3];                     console.log('7 + 16bit, length: ', parser.length);                     parser.maskData = [data[4], data[5], data[6], data[7]];                     start = 8;                 }                 else{                     dparser.length = data[11];                     for(i = 10; i &gt; 3; i--){\r\n                        parser.length += data[i] * (11 - i) * 256;\r\n                    }\r\n                    console.log('7 + 64bit, length: ', parser.length);\r\n                    parser.maskData = [data[12], data[13], data[14], data[15]];\r\n                    start = 16;\r\n                }\r\n\r\n                for(i = start, len = data.length; i &lt; len; i++){\r\n                    parser.frameData.push(parser.maskData[(i - start) % 4] ^ data[i]);\r\n                }\r\n            }\r\n            else{\r\n                if(data.length &lt; 0x80){\r\n                    start = 2;\r\n                }\r\n                else if(data.length &lt; 0xfe81){\r\n                    start = 4;\r\n                }\r\n                else{\r\n                    start = 12;\r\n                }\r\n                \/\/ find contents\r\n                parser.frameData = data.splice(start);\r\n            }\r\n            console.log('1st packge frame length: ', parser.frameData.length);\r\n            if(parser.frameData.length == parser.length){\r\n                pkt = new Buffer(parser.frameData);\r\n                \/\/ console.log(pkt.toString('utf8', 0, pkt.length));\r\n                parser.emit('message', pkt.toString('utf8', 0, pkt.length));\r\n                \/\/ \u6570\u636e\u5305\u7ed3\u675f\uff0c\u91cd\u7f6e\u957f\u5ea6\u4fe1\u606f\r\n                parser.frameData = [];\r\n                parser.length = 0;\r\n            }\r\n            return;\r\n        }\r\n\r\n        \/\/ \u8fde\u7eed\u7684\u6570\u636e\u5305\r\n        if(parser.maskData.length){\r\n            \/\/ continue to parse data\r\n            for(i = 0, l = data.length; i &lt; l; i++){\r\n                parser.frameData.push(parser.maskData[i % 4] ^ data[i]);\r\n            }\r\n            console.log('frame length: ', parser.frameData.length);\r\n            if(parser.frameData.length == parser.length){\r\n                pkt = new Buffer(parser.frameData);\r\n                \/\/ console.log(pkt.toString('utf8', 0, pkt.length));\r\n                parser.emit('message', pkt.toString('utf8', 0, pkt.length));\r\n                \/\/ \u6570\u636e\u5305\u7ed3\u675f\uff0c\u91cd\u7f6e\u957f\u5ea6\u4fe1\u606f\r\n                parser.frameData = [];\r\n                parser.length = 0;\r\n            }\r\n            return;\r\n        }\r\n     }\r\n};<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u63e1\u624b\u534f\u8bae\u5b9e\u73b0\u4e86\uff0c\u63a5\u4e0b\u6765\u5c31\u662f\u89e3\u6790\u6570\u636e\u4e86\uff0c\u8fd9\u4e2a\u76f8\u5bf9\u6765\u8bf4\u8981\u9ebb\u70e6\u5f88\u591a\uff0c\u76f8\u6bd4\u8349\u68487.6\u53d8\u5f97\u66f4\u590d\u6742\u4e86\u3002\u4e0b\u56fe\u662f\u6570\u636e\u4f20\u8f93\u7684\u683c\u5f0f\uff1a \u5404\u4e2a\u503c\u7684\u5177\u4f53\u542b\u4e49\u53ef\u4ee5\u53c2\u8003\u8fd9\u4e2a\u4e2d\u6587\u7ffb\u8bd1\uff1ahttp:\/\/blog.csdn.net\/fenglibing\/article\/details\/6852497\uff0c\u82f1\u6587\u539f\u6587\u5728\u8fd9\u91cc\uff1ahttp:\/\/tools.ietf.org\/html\/draft-ietf-hybi-thewebsocketprotocol-10#section-4.2 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