套接字代理服務器重定向url

我有一個基本的套接字代理服務器，我想在其中添加重定向功能。任何想法我怎麼去。只是更改主機不會有幫助，因爲從客戶端收集的緩衝區包含舊信息。套接字代理服務器重定向url

import java.io.IOException; 
import java.io.InputStream; 
import java.io.OutputStream; 
import java.net.ServerSocket; 
import java.net.Socket; 

public class SimpleProxyServer { 

    public static final int portNumber = 5555; 

    public static void main(String[] args) { 
     SimpleProxyServer proxyServer = new SimpleProxyServer(); 
     proxyServer.start(); 

    } 

    public void start() { 
     System.out.println("Starting the SimpleProxyServer ..."); 
     try { 

      ServerSocket serverSocket = new ServerSocket(
        SimpleProxyServer.portNumber, 1); 
      byte[] buffer = new byte[10000]; 

      while (true) { 
       Socket clientSocket = serverSocket.accept(); 

       InputStream bis = clientSocket.getInputStream(); 


       int n = bis.read(buffer); 
       String browserRequest = new String(buffer, 0, n); 
       System.out.println(browserRequest); 

       int start = browserRequest.indexOf("Host: ") + 6; 
       int end = browserRequest.indexOf('\n', start); 
       String host = browserRequest.substring(start, end - 1); 
       System.out.println("Connecting to host " + host); 


       Socket hostSocket = new Socket(host, 80); //I can change the host over here 
       OutputStream sos = hostSocket.getOutputStream(); 
       System.out.println("Forwarding request to server"); 
       sos.write(buffer, 0, n);// but then the buffer that is fetched from the client remains same 
       sos.flush(); 


       InputStream sis = hostSocket.getInputStream(); 
       OutputStream bos = clientSocket.getOutputStream(); 

       System.out.println("Forwarding request from server"); 

       do { 
        n = sis.read(buffer); 
        System.out.println("Receiving " + n + " bytes"); 
        if (n > 0) { 
         bos.write(buffer, 0, n); 
        } 
       } while (n > 0); 

       bos.flush(); 
       hostSocket.close(); 
       clientSocket.close(); 
       System.out.println("End of communication"); 

      } 
     } catch (IOException e) { 
      e.printStackTrace(); 
     } 
    } 
}

在這裏，我的客戶端是一個瀏覽器，所以緩衝區包含大量的數據。

browerRequest的任何例子

GET http://www.yahoo.com/ HTTP/1.0 
Host: www.yahoo.com 
User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:16.0) Gecko/20100101 Firefox/16.0 
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 
Accept-Language: en-US,en;q=0.5 
Accept-Encoding: gzip, deflate 
Connection: close 
Proxy-Connection: close 
Cookie: B=c6r6cn99536pm&b=3&s=ha; fpc=d=mEdlILxMtEbSZkEHT9nArn_LmO6DBF2HC4aZWnYvepTQpHb86MidH7bPbylrLChwtcznc4rZnUWz5R_xvFr6WJYcYJnpG_aBqekaFtBKsmCUsblQQtM1ivZpRz7m6PYiQtwtcoGVAs55IhfOy0eaqXdfEif8ZkXrgpiYjmy2Qm_wkORpT5tXcZKJ.nKcMcUqh7aoTVA-&v=2; MSC=t=1381079862X; BILLBOARD=nv=1&bn=0&collapsed=0; ypcdb=e5e21a3dacf7b87ec358a08261d310ec

下一次是當while循環迭代再次在browserReqest變，

GET http://in.yahoo.com/?p=us HTTP/1.0 
Host: in.yahoo.com 
User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:16.0) Gecko/20100101 Firefox/16.0 
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 
Accept-Language: en-US,en;q=0.5 
Accept-Encoding: gzip, deflate 
Connection: close 
Proxy-Connection: close 
Cookie: B=c6r6cn99536pm&b=3&s=ha; MSC=t=1381079862X; fpc=d=NVQLQy5MtEYnypFx54.9vMbBB6hMzgZBTkPUzrh5pyN7MdDAbbwV96dq9xhvHLfj_A.DBwRKIwUiufAsj8Gs1EBtj3slZb31KrhNjPe5lEAgMlEeXUijTqpYZnFWROwAFjCqcd_4SV90e1XEu87kCBT7Lb1rzodBKY1ZUHmC57O0QEJWL8rJJcEcaODEc.69elh3CaiKmaxkP5rwWbx0FK15ZCCYbJROMwwFXovaYBfR.Re27s4saqnUCBQSFI3Ro80k_ci5&v=2; fpps=_page=%7B%22wsid%22%3A%2221445690%22%7D; fpt=d=DV0PgAXXeVzrfc2GezJLqQPfzZiyGbbBhDpW.vmTd6yHOqDQACyQiLPWz..0N0jUP35Yo9S9Yw8rMuXlE9gjZ1Ra3MhzyfnyMN67b_8cb7d7NbRceZS4AzDaVqbHB_9Tfyeznojpm3AuzqGUdfG2fnoMVl4OqKM_a7Mt3vV8U4Qr38gB864WFl6NXOyz7n_T1FA89lQfsWVob0oOzuXWNfieD_jikxauj.3nFDkbkFH6qATpBXHLGP7OvE7ibc0IL.66u7kDDaawvEOSSyh1tv3LhSrYshHS5MfslHpkSUJsP4lIBNxcQQRJWBmw27rl9mfg.R7vAOQwFHi6_24D0XtQDhKntlO2sWSCplscG35S353IBzPRZranUwp_fYP3XuePv6E8yAkENSCbmx5..vjQTLOMEEf5mUlNmFvQoxSRzlvoG5vAdRcPmELlbxs6MZxMd822gifvP063z9dF8lNRWZTcK8Mfq0ob4XSUplzWbbY6lb2yJIZ57ddogxHo6phfy59RqLqFPWSb38a9K3UU0TSjPDEg9wjfFmmdew--&v=1; fpc_s=d=2smDyqJMtEb.MYIbCNo48GeCPgKDD8rlRWYK4yILeDPeL8Rmu.M9oX3wGvweGpvAQBcYSlyjemeKTeHpqOmaDGC.eKT3dwzmsyUMo48OZJEkv2z_fkIIMkipQJsEMCFngcwJ8tJL_R2hZBS6Z3MjJwmD28zABdGjrhJ71RmXmfkj6Ofas8R4UkkcXvyGgVsyGKxOeYip45UMltDfVpBa7SNz_GAcrhtpvlV6PRjF4ffKxTpAdx5uGiXok_5S7UmGpD8iQR.SOkZ0uhAr3iBl6wpoVGIHvPvOqPaZ8pAJApGQwmp85Ul3uJYqpXanb0B.WxaiyUXr6DlQBzUVrXHcn0Pm5_pQ6yATqiq0jBzsQqZNDAC8JAqecLmgRQUa7E_7B60IsEwV7TIq1mDdNhDgIk5lbIncWwLYVmoUyPxI0.UYcPJW&v=2; FPCK2=AgBSUZsQABPEEABFMhAARIgQAGMC; BILLBOARD=nv=1&bn=0&collapsed=0; ypcdb=e5e21a3dacf7b87ec358a08261d310ec

我只想重定向www.yahoo.com的請求可以說www.google.com

我該如何做到這一點？因爲從我所看到的是我無法編輯從客戶端/瀏覽器收到的緩衝區。

來源

2013-10-06 ItachiUchiha

你不需要對內容做任何事情。客戶端將按照將您當前代理的URL的請求路由到您的方式來路由對嵌入式URL的請求。

來源

2013-10-06 21:07:17 EJP

我想你沒有得到我的問題。我在瀏覽器中輸入www.yahoo.com。因此，對www.yahoo.com的請求將發送給代理，但我希望我的代理向外部服務器發送對www.google.com的請求，並將此響應發送回瀏覽器。希望事情現在更清楚。 – ItachiUchiha

所以你試圖說的是你在瀏覽器中輸入的任何URL，它必須被重定向到你設置的頁面。是嗎？例如，如果您將代理服務器設置爲指向google.com，那麼無論何時用戶輸入任何網址，該網頁都必須重定向到google.com？ – jayeshkv

是的，這就是我說的:) – ItachiUchiha

我有同樣的問題，但試圖解決這個捕獲servlet的請求/響應。試試這個http://www.tidytutorials.com/2009/12/simple-java-proxy-servlet-using.html並更改URL以重定向。響應不是最好的（圖像，css和js不呈現），但通過更改內容類型可以解決。

來源

2014-10-03 02:18:04

套接字代理服務器重定向url

回答

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