ios - Quickblox webrtc video call not connected or not recieved -

i working quickblox webrtc video calling process. stuck on when 1 recive call , not getting response when user accept call method.

this method not call , not getting pick call.

-(void)session:(qbrtcsession *)session userdoesnotrespond:(nsnumber *)userid {      if (session == self.session) {          [self performupdateuserid:userid block:^(opponentcollectionviewcell *cell) {             cell.connectionstate = [self.session connectionstateforuser:userid];         }];     } }