“`”<\/p>\n
1.\u540e\u7aef\u7a0b\u5e8f\u53ef\u4ee5\u901a\u8fc7session\u6765\u8fdb\u884c\u901a\u8baf\uff0csession\u6709\u8fc7\u671f\u65f6\u95f4\uff0c\u4e3b\u8981\u7528\u4e8e\u9a8c\u8bc1\u7801\u7684\u9a8c\u8bc1\uff0c\u767b\u5f55\u8fc7\u671f\u7b49\u7684\u5e94\u7528\u3002
\n2.\u6570\u636e\u5e93\uff0c\u6570\u636e\u5e93\u652f\u6301\u591a\u79cd\u8bed\u8a00\u7684\u64cd\u4f5c\uff0c\u90a3\u4e48\u901a\u8fc7\u6570\u636e\u5e93\u5c31\u53ef\u4ee5\u901a\u8baf\u3002
\n\u5173\u4e8e\u8de8\u57df\uff1a
\n\u8de8\u57df\u8bf7\u6c42\u5b58\u5728\u7684\u539f\u56e0\uff1a\u7531\u4e8e\u6d4f\u89c8\u5668\u7684\u540c\u6e90\u7b56\u7565\uff0c\u5373\u5c5e\u4e8e\u4e0d\u540c\u57df\u7684\u9875\u9762\u4e4b\u95f4\u4e0d\u80fd\u76f8\u4e92\u8bbf\u95ee\u5404\u81ea\u7684\u9875\u9762\u5185\u5bb9\u3002
\n\u8de8\u57df\u7684\u573a\u666f\uff1a
\n1.\u57df\u540d\u4e0d\u540c <a class=""url"" href=""http:\/\/www.mianshigee.com"" target=""_blank"">www.mianshigee.com<\/a> \u548c<a class=""url"" href=""http:\/\/www.alibaba.com"" target=""_blank"">www.alibaba.com<\/a> \u5373\u4e3a\u4e0d\u540c\u7684\u57df\u540d\uff09
\n2.\u4e8c\u7ea7\u57df\u540d\u76f8\u540c\uff0c\u5b50\u57df\u540d\u4e0d\u540c\uff08<a class=""url"" href=""http:\/\/www.wuhan.yangwei.com"" target=""_blank"">www.wuhan.yangwei.com<\/a> <a class=""url"" href=""http:\/\/www.shenzheng.yangwei.com"" target=""_blank"">www.shenzheng.yangwei.com<\/a> \u4e3a\u5b50\u57df\u4e0d\u540c\uff09
\n3.\u7aef\u53e3\u4e0d\u540c\uff0c\u534f\u8bae\u4e0d\u540c \uff08 <a class=""url"" href=""http:\/\/www.yangwei.com"" target=""_blank"">http:\/\/www.yangwei.com<\/a> \u548c<a class=""url"" href=""https:\/\/www.yangwei.com"" target=""_blank"">https:\/\/www.yangwei.com<\/a>\u5c5e\u4e8e\u8de8\u57df<a class=""url"" href=""www.yangwei.con:8888"" target=""_blank"">www.yangwei.con:8888<\/a>\u548c<a class=""url"" href=""www.yangwei.con:8080"" target=""_blank"">www.yangwei.con:8080<\/a>)
\n\u8de8\u57df\u7684\u65b9\u5f0f\uff1a\uff08\u5185\u5bb9\u8f83\u591a\uff0c\u9700\u638c\u63e1CORS\u548cjsonp\uff0c\u5176\u4ed6\u5185\u5bb9\u4e5f\u8981\u4e86\u89e3\uff09
\n<strong>1.\u524d\u7aef\u7684\u65b9\u5f0f:<\/strong> possMessage\uff0cwindow.name,document.domain,image.src(\u5f97\u4e0d\u5230\u6570\u636e\u8fd4\u56de)\uff0cjsonP(script.src\u540e\u53f0\u4e0d\u914d\u5408\u5f97\u4e0d\u5230\u6570\u636e\u8fd4\u56de)\uff0cstyle.href\uff08\u5f97\u4e0d\u5230\u6570\u636e\u8fd4\u56de)
\n\u4e00.image.src,script.src,style.href \u4e0d\u53d7\u540c\u6e90\u7b56\u7565\u7684\u5f71\u54cd\u53ef\u4ee5\u52a0\u8f7d\u5176\u4ed6\u57df\u7684\u8d44\u6e90\uff0c\u53ef\u4ee5\u7528\u8fd9\u4e2a\u7279\u6027\uff0c\u5411\u670d\u52a1\u5668\u53d1\u9001\u6570\u636e\u3002\u6700\u5e38\u7528\u7684\u5c31\u662f\u4f7f\u7528image.src \u5411\u670d\u52a1\u5668\u53d1\u9001\u524d\u7aef\u7684\u9519\u8bef\u4fe1\u606f\u3002image.src \u548cstyle.href \u662f\u65e0\u6cd5\u83b7\u53d6\u670d\u52a1\u5668\u7684\u6570\u636e\u8fd4\u56de\u7684\uff0cscript.src \u670d\u52a1\u5668\u7aef\u914d\u5408\u53ef\u4ee5\u5f97\u5230\u6570\u636e\u8fd4\u56de\u3002
\n\u4e8cpossMessage,window.name,document.domain \u662f\u4e24\u4e2a\u7a97\u53e3\u76f4\u63a5\u76f8\u4e92\u4f20\u9012\u6570\u636e\u3002
\n\uff081\uff09possMessage \u662fHTML5\u4e2d\u65b0\u589e\u7684\uff0c\u4f7f\u7528\u9650\u5236\u662f \u5fc5\u987b\u83b7\u5f97\u7a97\u53e3\u7684window \u5f15\u7528\u3002IE8+\u652f\u6301\uff0cfirefox\uff0cchrome,safair,opera\u652f\u6301
\n\uff082\uff09window.name \uff0c\u5728\u4e00\u4e2a\u9875\u9762\u4e2d\u6253\u5f00\u53e6\u4e00\u4e2a\u9875\u9762\u65f6\uff0cwindow.name \u662f\u5171\u4eab\u7684\uff0c\u6240\u4ee5\u53ef\u4ee5\u901a\u8fc7window.name \u6765\u4f20\u9012\u6570\u636e\uff0cwindow.name\u7684\u9650\u5236\u5927\u5c0f\u662f2M\uff0c\u8fd9\u4e2a\u6240\u6709\u6d4f\u89c8\u5668\u90fd\u652f\u6301,\u4e14\u6ca1\u6709\u4ec0\u4e48\u9650\u5236\u3002
\n 3\uff09 document.domain \u5c06\u4e24\u4e2a\u9875\u9762\u7684document.domain \u8bbe\u7f6e\u6210\u76f8\u540c\uff0cdocument.domain \u53ea\u80fd\u8bbe\u7f6e\u6210\u7236\u7ea7\u57df\u540d\uff0c\u65e2\u53ef\u4ee5\u8bbf\u95ee\uff0c\u4f7f\u7528\u9650\u5236\uff1a\u8fd9\u9876\u7ea7\u57df\u540d\u5fc5\u987b\u76f8\u540c
\n<strong>2.\u7eaf\u540e\u7aef\u65b9\u5f0f: CORS\uff0c\u670d\u52a1\u5668\u4ee3\u7406<\/strong>
\nCORS \u662fw3c\u6807\u51c6\u7684\u65b9\u5f0f\uff0c\u901a\u8fc7\u5728web\u670d\u52a1\u5668\u7aef\u8bbe\u7f6e\uff1a\u54cd\u5e94\u5934Access\u4e00Cntrol\u4e00Alow\u4e00Origin \u6765\u6307\u5b9a\u54ea\u4e9b\u57df\u53ef\u4ee5\u8bbf\u95ee\u672c\u57df\u7684\u6570\u636e\uff0cie8&9(XDomainRequest),10+,chrom4 \uff0cfirefox3.5,safair4\uff0copera12\u652f\u6301\u8fd9\u79cd\u65b9\u5f0f\u3002
\n\u670d\u52a1\u5668\u4ee3\u7406\uff0c\u540c\u6e90\u7b56\u7565\u53ea\u5b58\u5728\u6d4f\u89c8\u5668\u7aef\uff0c\u901a\u8fc7\u670d\u52a1\u5668\u8f6c\u53d1\u8bf7\u6c42\u53ef\u4ee5\u8fbe\u5230\u8de8\u57df\u8bf7\u6c42\u7684\u76ee\u7684\uff0c\u52a3\u52bf\uff1a\u589e\u52a0\u670d\u52a1\u5668\u7684\u8d1f\u62c5\uff0c\u4e14\u8bbf\u95ee\u901f\u5ea6\u6162\u3002
\n<strong>3.\u524d\u540e\u7aef\u7ed3\u5408:JsonP<\/strong>
\nscript.src \u4e0d\u53d7\u540c\u6e90\u7b56\u7565\u7684\u9650\u5236\uff0c\u6240\u4ee5\u53ef\u4ee5\u52a8\u6001\u7684\u521b\u5efascript\u6807\u7b7e\uff0c\u5c06\u8981\u8bf7\u6c42\u6570\u636e\u7684\u57df\u5199\u5728src \u4e2d\u53c2\u6570\u4e2d\u9644\u5e26\u56de\u8c03\u7684\u65b9\u6cd5\uff0c\u670d\u52a1\u5668\u7aef\u8fd4\u56de\u56de\u8c03\u51fd\u6570\u7684\u5b57\u7b26\u4e32\uff0c\u5e76\u5e26\u53c2\u6570\u3002
\n\u5982 script.src=\u201c<a class=""url"" href=""http:\/\/www.yangwei.com\/?id=001&callback=getInfoCallback"" target=""_blank"">http:\/\/www.yangwei.com\/?id=001&callback=getInfoCallback<\/a>\u201d,\u670d\u52a1\u5668\u7aef\u8fd4\u56de getInfoCallBack(\u201cname:yangwei;age:18\u201d) \u8fd9\u6bb5\u4ee3\u7801\u4f1a\u76f4\u63a5\u6267\u884c\uff0c\u5728\u524d\u9762\u5b9a\u4e49\u597dgetInfoCallBack\u51fd\u6570\uff0c\u65e2\u53ef\u4ee5\u83b7\u5f97\u6570\u636e\u5e76\u89e3\u6790\u3002 \u8fd9\u79cd\u662f\u6700\u5e38\u89c1\u7684\u65b9\u5f0f\u3002
\n<strong>4.webSocket\uff08\u4e86\u89e3\u6027\u62d3\u5c55\uff09<\/strong>
\n\u670d\u52a1\u7aef\u63a8\u9001websocket\u548csse\u573a\u666f\u53ca\u5e94\u7528
\n\u5e94\u7528\u573a\u666f
\n\u90fd\u53ef\u4ee5\u8fdb\u884c\u670d\u52a1\u7aef\u63a8\u9001,\u5e76\u4e14\u90fd\u662f\u4f7f\u7528\u957f\u8fde\u63a5\u6765\u8fdb\u884c.\u4f46\u4e24\u8005\u7684\u5b9e\u73b0\u53c8\u6709\u4e00\u70b9\u4e0d\u540c,sse\u4ecd\u4f7f\u7528http\u534f\u8bae,\u5e76\u4e14\u4f7f\u7528\u76f8\u540c\u7684\u94fe\u63a5\u53d1\u9001\u6b63\u5e38\u7684http\u534f\u8bae\u62a5\u6587.\u800cwebsocket\u662f\u4f7f\u7528http\u534f\u8bae\u8fdb\u884c\u63e1\u624b,\u7136\u540e\u518d\u4f7f\u7528\u540c\u4e00\u4e2a\u94fe\u63a5\u8fdb\u884cwebsocket\u534f\u8bae\u7684\u901a\u4fe1.
\nwebsocket\u53ef\u4ee5\u8fdb\u884c\u53cc\u5411\u7684\u901a\u4fe1,\u5373\u670d\u52a1\u7aef\u53ef\u4ee5\u5f80\u5ba2\u6237\u7aef\u53d1\u4fe1\u606f,\u5ba2\u6237\u7aef\u4e5f\u53ef\u4ee5\u5411\u670d\u52a1\u7aef\u53d1\u4fe1\u606f.\u800csse\u662f\u5355\u5411\u7684,\u53ea\u80fd\u7531\u670d\u52a1\u7aef\u5f80\u5ba2\u6237\u7aef\u53d1.
\nwebsocket\u81ea\u5e26\u8fde\u63a5\u7684\u4fdd\u6301,\u5373\u901a\u8fc7ping\/pong\u534f\u8bae\u4fdd\u8bc1\u8fde\u63a5\u53ef\u4ee5\u59cb\u7ec8\u7ef4\u6301,sse\u6ca1\u6709\u8fd9\u4e2a\u4fdd\u8bc1,\u4e0d\u8fc7\u53ef\u4ee5\u53c2\u8003ping\/pong\u534f\u8bae,\u81ea\u5df1\u5468\u671f\u6027\u5730\u53d1\u9001\u4fe1\u606f\u6765\u540c\u6837\u5730\u8fdb\u884c\u5904\u7406.\u6bd4\u5982,5\u79d2\u5f80\u5ba2\u6237\u7aef\u53d1\u4e00\u4e2a\u7279\u522b\u7684\u4fe1\u606f(\u901a\u8fc7type\/name\u8fdb\u884c\u533a\u5206).\u5176\u6b21,\u56e0\u4e3a\u662f\u57fa\u4e8e\u6d4f\u89c8\u5668\u7684\u4f7f\u7528,sse\u6709\u4e00\u4e2a\u7279\u6027,\u5c31\u662f\u6d4f\u89c8\u5668\u53d1\u73b0\u4e00\u4e2a\u8fde\u63a5\u65ad\u6389\u4e86,\u5c31\u4f1a\u81ea\u52a8\u5730\u8fdb\u884c\u91cd\u8054,\u5373\u91cd\u65b0\u53d1\u9001\u8bf7\u6c42.\u8fd9\u6837,\u670d\u52a1\u7aef\u4e5f\u4e0d\u7528\u62c5\u5fc3\u8fde\u63a5\u88ab\u65ad\u5f00,\u4e0d\u8fc7\u9700\u8981\u5904\u7406\u65b0\u7684\u8bf7\u6c42\u5fc5\u987b\u548c\u4e0a\u4e00\u6b21\u8bf7\u6c42\u7684\u5185\u5bb9\u76f8\u8fde\u7eed,\u4ee5\u53ca\u65b0\u7684\u63a8\u9001\u6ce8\u518c.
\n\u56e0\u4e3a\u90fd\u662f\u4f7f\u7528http\u534f\u8bae\u8fdb\u884c\u8d77\u59cb\u5904\u7406,\u56e0\u6b64\u5728\u7b7e\u6743\u4e0a\u90fd\u53ef\u4ee5\u4f7f\u7528\u5230http\u534f\u8bae\u672c\u8eab\u7684\u4e00\u4e9b\u4e1c\u897f,\u6bd4\u5982header\/cookie\u7b7e\u6743.\u5728\u76f8\u5e94\u7684\u63e1\u624b\u9636\u6bb5,\u901a\u8fc7\u8bfb\u53d6cookie(session)\u6765\u4fdd\u8bc1\u76f8\u5e94\u7684\u8bf7\u6c42\u5fc5\u987b\u662f\u7ecf\u8fc7\u6388\u6743\u7684,\u4e5f\u53ef\u4ee5\u7528\u4e8e\u5b9a\u4f4d\u4f7f\u7528\u4eba.\u751a\u81f3\u53ef\u4ee5\u901a\u8fc7\u8fd9\u4e9b\u4fe1\u606f\u4fdd\u8bc1\u5355\u4e2a\u7528\u6237\u53ea\u80fd\u6709\u4e00\u4e2a\u8bf7\u6c42,\u907f\u514d\u91cd\u590d\u8bf7\u6c42
\n\u7531\u4e8e\u90fd\u662f\u57fa\u4e8e\u6d4f\u89c8\u5668\u4f7f\u7528,\u56e0\u6b64\u5efa\u8bae\u7684\u6570\u636e\u4f20\u8f93\u90fd\u662f\u6587\u672c\u578b.\u867d\u7136websocket\u652f\u6301\u4e8c\u8fdb\u5236frame\u4f20\u8f93,\u4e0d\u8fc7\u4e00\u4e9b\u90fd\u4e0d\u5efa\u8bae\u4f7f\u7528.sse\u53ea\u80fd\u4f20\u8f93\u6587\u672c
\n\u4e0d\u7ba1\u662fwebsocket\u8fd8\u662fsse,\u5728\u7528\u4e8e\u901a\u4fe1\u65f6,\u90fd\u5efa\u8bae\u53ea\u7528\u4e8e\u8fdb\u884c\u6570\u636e\u7684\u63a8\u9001,\u800c\u4e0d\u662f\u8fdb\u884c\u5b8c\u6574\u7684\u5e94\u7528\u5904\u7406.\u8fd9\u91cc\u53ef\u4ee5\u7406\u89e3\u4e3a,\u5e38\u89c4\u7684\u4e1a\u52a1\u5904\u7406\u4ecd\u7136\u4ea4\u7ed9\u540e\u7aef\u7684\u670d\u52a1\u6765\u5904\u7406.\u8fd9\u6837,\u5373\u53ef\u4ee5\u4f7f\u7528\u4e4b\u524d\u7684\u4e1a\u52a1\u5f00\u53d1\u7684\u4f18\u52bf,\u53c8\u53ef\u4ee5\u4f7f\u7528\u63a8\u9001\u7684\u4f18\u52bf.\u800c\u4e0d\u662f\u8d70\u5411\u53e6\u4e00\u4e2a\u7ea7\u7aef,\u5373\u6240\u6709\u7684\u4fe1\u606f\u90fd\u60f3\u901a\u8fc7\u63a8\u9001\u6765\u4f20\u9012.
\n\u5f00\u53d1\u65b9\u5f0f
\nwebsocket\u5f00\u53d1\u9996\u9009netty,\u56e0\u4e3anetty\u5bf9\u534f\u8bae\u7684\u5c01\u88c5\u5df2\u7ecf\u505a\u5230\u4e86\u5b8c\u5168\u7684\u652f\u6301.\u901a\u8fc7 HttpServerCodec\u4f5c\u4e3a\u63e1\u624b\u534f\u8bae,WebSocketServerProtocolHandler\u4f5c\u4e3a\u534f\u8bae\u5904\u7406,\u7136\u540e\u518d\u52a0\u4e00\u4e2a\u81ea\u5df1\u7684handler,\u5c31\u5b8c\u6210\u4e86\u76f8\u5e94\u7684\u4e1a\u52a1\u5904\u7406.\u540c\u65f6\u5728\u6027\u80fd\u4e0a,netty\u5728\u4e00\u4e2aws\u7684\u8bf7\u6c42\u5efa\u7acb\u8d77\u6765\u4e4b\u540e,\u4f1a\u81ea\u52a8\u5730\u53bb\u9664httpServerCodec\u76f8\u5173\u7684handler,\u8fd9\u6837\u4fdd\u8bc1\u540e\u7eed\u7684\u5904\u7406\u90fd\u662f\u6309\u7167ws\u7684\u534f\u8bae\u6765\u8fdb\u884c.
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\n\u9700\u8981\u540e\u7aef\u6709\u7684\u65f6\u5019\u9700\u8981\u8fdb\u884c\u5b9a\u5411\u53d1\u9001\u6216\u8005\u662f\u7fa4\u53d1,\u8fd9\u79cd\u9700\u6c42ws\u548csse\u7684\u5b9e\u73b0\u4e2d\u90fd\u6709\u76f8\u5e94\u7684\u5904\u7406.\u5982ChannelGroup\u548cSseBroadcaster,\u8fd9\u6837\u5728\u540e\u7aef\u83b7\u53d6\u5230\u4e00\u4e2a\u6d88\u606f,\u9700\u8981\u8fdb\u884c\u8def\u7531\u65f6\u5c31\u53ef\u4ee5\u4ece\u8fd9\u91cc\u9762\u62ff\u76f8\u5e94\u7684channel\u4fe1\u606f.\u4e0d\u8fc7,\u524d\u63d0\u662f\u5bf9\u5404\u4e2achannel\u4e0a\u8fdb\u884c\u4e86\u7279\u5b9a\u7684\u6d88\u606f\u7ed1\u5b9a,\u8fd9\u6837\u5c31\u597d\u533a\u5206\u5177\u4f53\u7684\u8def\u7531\u4fe1\u606f.\u5177\u4f53\u8def\u7531\u7b56\u7565\u53ef\u4ee5\u5728\u5efa\u7acb\u65f6\u7ed1\u5b9asession,\u540e\u7eed\u901a\u8fc7session\u6765\u8def\u7531.<\/p>\n
\u00a0<\/p>\n
<pre><code> "“`
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