android - Volley gives a Protocol Exception error, 21 too many followups -

this function call:

 public static void senddata(final integer type , final string url, final context context, final crudstatecallback back){     stringrequest jr = new stringrequest(type, url,             new response.listener<string>() {                 @override                 public void onresponse(string response) {                     system.out.println(response.substring(0,100));                     log.i("","wscalls response is: " + response);                     if(back != null)                         back.onresponse(200, response);                 }             }, new response.errorlistener() {         @override         public void onerrorresponse(volleyerror error) {             log.i("","wscalls went wrong!");             error.printstacktrace();             string errors = "error null";             int code = 0;             try {                 if (error != null) {                     errors = error.getmessage();                     code = error.networkresponse.statuscode;                 }             }catch (exception e){                 log.e("","wscalls error in send data:" + e.getmessage());             }             if(back != null)                 back.onresponse(code, errors);         }     });     if (utils.networkisavailable( context)) {         jr.setretrypolicy(new defaultretrypolicy(60 * 1000, 0, 1));         vidyosampleapplication.mrequestqueue.add(jr);     } } 

with following params:

wscalls.senddata(request.method.get, "https://control.facetalk.nl/vidyologs/call_start.php?meetingid=82000005715&profielid=51108581", vidyosampleactivity.this, null); 

i tried url: https://control.facetalk.nl/vidyologs/call_start.php?meetingid=82000005715&profielid=51108581 , works, "200" on postman. volley return following error:

11-17 16:54:57.094: w/system.err(3415): com.android.volley.noconnectionerror: java.net.protocolexception: many follow-up requests: 21 11-17 16:54:57.094: w/system.err(3415):     @ com.android.volley.toolbox.basicnetwork.performrequest(basicnetwork.java:151) 11-17 16:54:57.094: w/system.err(3415):     @ com.android.volley.networkdispatcher.run(networkdispatcher.java:112) 11-17 16:54:57.094: w/system.err(3415):     @ com.android.okhttp.internal.huc.httpurlconnectionimpl.getresponse(httpurlconnectionimpl.java:401) 11-17 16:54:57.094: w/system.err(3415):     @ com.android.okhttp.internal.huc.httpurlconnectionimpl.getresponsecode(httpurlconnectionimpl.java:501) 11-17 16:54:57.094: w/system.err(3415):     @ com.android.okhttp.internal.huc.delegatinghttpsurlconnection.getresponsecode(delegatinghttpsurlconnection.java:105) 11-17 16:54:57.094: w/system.err(3415):     @ com.android.okhttp.internal.huc.httpsurlconnectionimpl.getresponsecode(httpsurlconnectionimpl.java) 11-17 16:54:57.095: w/system.err(3415):     @ com.android.volley.toolbox.hurlstack.performrequest(hurlstack.java:110) 11-17 16:54:57.095: w/system.err(3415):     @ com.android.volley.toolbox.basicnetwork.performrequest(basicnetwork.java:96) 

what can fix this? don't understand, tried modifying detaulf retry policy nothing helps

i did using httpclient instead of volley , worked:

 httpclient httpclient = new defaulthttpclient();                 httpclient.getparams().setparameter(clientpnames.allow_circular_redirects, true);                 httppost httppost = new httppost(url);                 httpresponse response = httpclient.execute(httppost);                 string responsebody = "";                 bufferedreader buffer = new bufferedreader(new inputstreamreader(response.getentity().getcontent()));                 string s = "";                 while ((s = buffer.readline()) != null)                     responsebody += s;                 log.i("","wscalls response body is:" + responsebody);