Node.js实现的flash-socket策略服务器

最新推荐文章于 2022-05-06 23:57:10 发布

dr_flower

最新推荐文章于 2022-05-06 23:57:10 发布

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本文链接：https://blog.youkuaiyun.com/dr_flower/article/details/48368457

本文介绍了一个使用Node.js编写的Flash Socket策略服务器。该服务器监听843端口，并响应来自Flash客户端的策略文件请求，返回预定义的跨域策略XML。如果接收到正确的请求，则允许所有域名和端口的访问；若请求不符合预期，则会拒绝连接。

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// written in node.js
// a policy server for flash socket


var PORT = 843;
var POLICY_XML =
'<cross-domain-policy>' +
    '<site-control permitted-cross-domain-policies="master-only"/>'+
    '<allow-access-from domain="*" to-ports="*" />' +
'</cross-domain-policy>';


var net = require('net');
net.createServer(function(flashSocketPolicyServer) {
    flashSocketPolicyServer.setTimeout(1500, function() {
        console.log(flashSocketPolicyServer.remoteAddress + ' timeout');
        flashSocketPolicyServer.destroy();
    });
    flashSocketPolicyServer.on('data', function(data) {
        if(data.toString() == '<policy-file-request/>\0') {
            console.log(flashSocketPolicyServer.remoteAddress + ' crossed');
            flashSocketPolicyServer.end(POLICY_XML);   
        } else {
            console.log(flashSocketPolicyServer.remoteAddress + ' refused');
            console.log("not a policy request");
            flashSocketPolicyServer.destroy();
        }
    });
}).listen(PORT, function() {
    console.log('policy service established');
});