ssl - How can a java proxy handle "https" requests to multiple hosts? -

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i trying make proxy server in java , able make working proxy handles http requests properly. after searching lot able extend program https requests following answer similar question: https://stackoverflow.com/a/9389125/5309299

here's code after tcp connection established between client , proxy:

string request = ""; byte[] requestbytearr;  //read complete request while(true){     string requestline = bufferedreaderfromclient.readline() + "\r\n";      if (requestline.trim().length()==0 && !request.equals("")){         request+=requestline;         requestbytearr = request.getbytes();         system.out.println(request);         break;     } else {         request+=requestline;     } } string hostname = gethostfromrequest(request); int remoteport = getremoteportfromrequest(request); if (request.startswith("connect")){     //establish connection between host , proxy     final socket hostsocket = new socket(hostname, remoteport);      //tell client connection successful     string statusline = "http/1.1 200 connection established \n" + "proxy-agent: proxyserver/1.0\n" + "\r\n";     outtoclient.write(statusline.getbytes());     outtoclient.flush();      //new thread handle incoming responses host     new thread(){         public void run(){             try{                 inputstream infromhost = hostsocket.getinputstream();                 while(true){                     byte[] bufread = new byte[128];                     int bytes_received;                     while ((bytes_received = infromhost.read(bufread)) > 0){                         outtoclient.write(bufread, 0, bytes_received);                         outtoclient.flush();                     }                 }              } catch (ioexception e){                  e.printstacktrace();              }          }     }.start();      //main thread handles incoming requests client     outputstream outtohost = hostsocket.getoutputstream();     while (true){         byte[] bufread = new byte[128];         int bytes_received;         while ((bytes_received = infromclient.read(bufread)) > 0){             outtohost.write(bufread, 0, bytes_received);             outtohost.flush();         }     } }

obviously, works 1 host, i.e. when client (e.g. chrome browser) sends connect request 1 host (e.g. "www.google.com:443"). want client able connect multiple hosts. problem since requests come after connect request encrypted, proxy server not able determine request meant host, cannot forward requests.


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