Flex socket 安全策略请求

最近遇到这个问题，去网上找了一些资料说请是下面这样的

1,首先检测目标服务器的843端口是否提供安全策略
2,如果1没有检测到策略，则检测actionscript是否使用了Security.loadPolicyFile(xmlsocket://) 手段提供安全策略，如果还没检测到，则使用第3步检测
3,检测目标服务器目标端口是否提供安全策略

 

解决办法是：建一个843的ServerSocket或者是其他端口的ServerSocket(要在connect前调用Security.loadPolicyFile(“xmlsocket://ip：port”))，或者是被调ServerSocket。返回

xml="<cross-domain-policy> "
         +"<allow-access-from domain=/"*/" to-ports=/"*/"/>"
      +"</cross-domain-policy> ";

下面是网上找到843服务端代码：

import java.io.BufferedReader; import java.io.BufferedWriter; import java.io.IOException; import java.io.InputStreamReader; import java.io.OutputStreamWriter; import java.net.ServerSocket; import java.net.Socket; public class SecurityXMLServer implements Runnable { private ServerSocket server; private BufferedReader reader; private BufferedWriter writer; private String xml; public SecurityXMLServer(){ xml="<cross-domain-policy> " +"<allow-access-from domain=/"*/" to-ports=/"*/"/>" +"</cross-domain-policy> "; //启动843端口 createServerSocket(843); new Thread(this).start(); } //启动服务器 private void createServerSocket(int port) { try { server = new ServerSocket(port); System.out.println("服务监听端口：" + port); } catch (IOException e) { System.exit(1); } } //启动服务器线程 public void run() { while (true) { Socket client = null; try { //接收客户端的连接 client = server.accept(); InputStreamReader input = new InputStreamReader(client.getInputStream(), "UTF-8"); reader = new BufferedReader(input); OutputStreamWriter output = new OutputStreamWriter(client.getOutputStream(), "UTF-8"); writer = new BufferedWriter(output); //读取客户端发送的数据 StringBuilder data = new StringBuilder(); int c = 0; while ((c = reader.read()) != -1) { if (c != '/0') data.append((char) c); else break; } String info = data.toString(); System.out.println("输入的请求: " + info); //接收到客户端的请求之后，将策略文件发送出去 if(info.indexOf("<policy-file-request/>") >=0) { writer.write(xml + "/0"); writer.flush(); System.out.println("将安全策略文件发送至: " + client.getInetAddress()); } else { writer.write("请求无法识别/0"); writer.flush(); System.out.println("请求无法识别: "+client.getInetAddress()); } client.close(); } catch (Exception e) { e.printStackTrace(); try { //发现异常关闭连接 if (client != null) { client.close(); client = null; } } catch (IOException ex) { ex.printStackTrace(); } finally { //调用垃圾收集方法 System.gc(); } } } } }