myhttpsserverproxy.nothread.txt

Java安全性编程实例,解压看说明

import java.net.*;
import java.io.*;
import javax.net.ssl.*;
public class MyHTTPSServerProxy {
    public static void main(String args[ ]) {
        int i=0;
        try {
            SSLServerSocketFactory ssf= (SSLServerSocketFactory) SSLServerSocketFactory.getDefault( );
            ServerSocket ss=ssf.createServerSocket(443);
            System.out.println("Web Server OK ");

            while(true){
                Socket s=ss.accept( );  //等待请求
                PrintStream out = new PrintStream(s.getOutputStream( ));
                BufferedReader in = new BufferedReader(
                              new InputStreamReader(s.getInputStream( )));
                String info=null;
                String request=null;
                String host=null;
                while(( info=in.readLine())!=null){
                    if(info.indexOf("GET")!=-1){
                        //获取浏览器发来的get信息
                        request=info;
                    }
                    if(info.indexOf("Host")!=-1){
                                 host=info;
                    }
                    System.out.println("now got "+info);
                    if(info.equals("")) break;
                }

                System.out.println("now go");
                System.out.println("---1 gotreq "+request);
                System.out.println("---1 gothost "+host);
                if(request!=null){

                    try{
                        // 浏览器请求形如  GET /t/1.html HTTP/1.1
                        // sp1, sp2为第一次和第二次出现空格的位置，
                        // filename从浏览器请求中提取出文件路径和名称 如 t/1.html
                        int sp1=request.indexOf(' ');
                        int sp2=request.indexOf(' ',sp1+1);
                        String filename=request.substring(sp1+2,sp2);
/*                        // 若浏览器请求中无文件名，则加上默认文件名index.html
                        if(filename.equals("") || filename.endsWith("/")){
                            filename+="index.html";
                        }
*/
                        sp1=host.indexOf(' ');
                        host=host.substring(sp1+2,host.length());
  
                System.out.println("---2 gothost "+host);
  
                        if(request.startsWith("http://")){
                                                   request="http://"+host+"/"+request;
                                           }
                        System.out.println("--2Sending "+filename);
                        // 向浏览器发送文件
                    URL con=new URL(filename);
                    InputStream gotoin=con.openStream( );//和相应站点建立输入流
                    int n=gotoin.available( );   //获取网页的大小
                    byte buf[ ]=new byte[1024];
                    //按照Web服务器工作方式向用户浏览器发送信息
                        System.out.println("go--------- ");

                    out.println("HTTP/1.0 200 OK");
                    out.println("MIME_version:1.0");
                    out.println("Content_Type:text/html");
                    out.println("Content_Length:"+n);
                    out.println("");
                    while ((n=gotoin.read(buf))>=0){  // 读取网页内容
                        out.write(buf,0,n);   //将网页内容发送给用户浏览器
                    }

                    } catch(Exception e){
                        System.out.println(e);
                        System.out.println("wuwuw--------- ");

                    }
                        System.out.println("iver--------- ");

                    out.close( );
                    s.close( );
                    in.close( );
                } // end if
            }  // end while
        } catch (IOException e) {
            System.out.println(e);
        }
    }
}