How to disconnect/close VPN Tunnel connection via VpnService class in android -


i working on android app in have created vpn connection using vpnservice class. have close vpn connection @ point, thought stopping vpnservice class vpn-connection closed fails. want know how can close vpn-connection created vpnservice. have used following code establish vpn-connection

activate.setonclicklistener(new view.onclicklistener() {             @override             public void onclick(view v) {                 intent = vpnservice.prepare(getapplicationcontext());                 toast.maketext(homescreen.this, "intent "+intent.tostring(), toast.length_short).show();                 if (intent != null) {                     log.d("vpnconnection","intent not null");                     startactivityforresult(intent, 0);                 } else {                     log.d("vpnconnection","intent null");                     onactivityresult(0, result_ok, null);                 }             }         });   protected void onactivityresult(int requestcode, int resultcode, intent data) {         if (resultcode == result_ok) {             log.d("vpnconnection","onactivityresult");             intent intent = new intent(this, myvpnservice.class);             startservice(intent);         }     }

i have used vpnservice class 

import android.content.intent; import android.net.vpnservice; import android.os.build; import android.os.parcelfiledescriptor; import android.support.annotation.requiresapi; import android.util.log; import android.widget.toast; import java.io.fileinputstream; import java.io.fileoutputstream; import java.net.inetsocketaddress; import java.nio.channels.datagramchannel;  public class myvpnservice extends vpnservice {      private thread mthread;     private parcelfiledescriptor minterface;     //a.configure builder interface.     builder builder = new builder();      // services interface     @override     public int onstartcommand(intent intent, int flags, int startid) {         // start new session creating new thread.         mthread = new thread(new runnable() {              @override             public void run() {                 try {                     log.d("vpnconnection","running thread");                     //a. configure tun , interface.                     minterface = builder.setsession("myvpnservice")                             .addaddress("75.102.22.210", 24)           //it means "75.102.22.210" ip address py jo b request krega wo vpn-tunnel k through process hongi.. let suppose meri app 75.102.22.210 ip address py network request krti hy r meri app ny vpn implement b kia hoa hy 75.102.22.210 ip address meri app ki saari request vpn-tunnel k through process hongi..                             .adddnsserver("8.8.8.8")                             .addroute("10.8.0.1", 24).establish();                     //b. packets sent queued in input stream.                     fileinputstream in = new fileinputstream(                             minterface.getfiledescriptor());                     //b. packets received need written output stream.                     fileoutputstream out = new fileoutputstream(                             minterface.getfiledescriptor());                     //c. udp channel can used pass/get ip package to/from server                     datagramchannel tunnel = datagramchannel.open();                     // connect server, localhost used demonstration only.                     tunnel.connect(new inetsocketaddress("159.203.96.153", 1194));                     //d. protect socket, package send not feedback vpn service.                     protect(tunnel.socket());                     //e. use loop pass packets.                     while (true) {                     }                 } catch (exception e) {                     log.d("vpnconnection","exception raise while connection:  "+e);                     // catch exception                     e.printstacktrace();                 } {                     try {                         if (minterface != null) {                             minterface.close();                             minterface = null;                             log.d("vpnconnection","finally keywork running ");                         }                         else {                             log.d("vpnconnection", "interface null");                         }                     } catch (exception e) {                         log.d("vpnconnection","finally excetion "+e);                     }                 }             }          }, "myvpnrunnable");          //start service         mthread.start();         return start_sticky;     }      @override     public void ondestroy() {         // todo auto-generated method stub         if (mthread != null) {             mthread.interrupt();         }         super.ondestroy();     } }


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